How to Find Mahi Mahi and Wahoo Offshore-Fishing for Pelagic Fish Offshore-Fishing Tips

Tips and Strategies for Using SATFISH SST Charts

The best way to catch more dolphin and wahoo offshore in the Florida Keys is to use SST charts(Sea Surface Temperature Charts). An SST chart provides real-time data on water temperature, allowing fishermen to identify areas where Florida Keys dolphin are likely to be found. Using these charts, offshore fisherman can locate temperature breaks, where warm and cool water masses meet.

Good Karma Sportfishing Wahoo-SATFISH Offshore

Florida Keys Wahoo Fishing Using SATFISH-Good Karma Sportfishing


These breaks often attract baitfish, attracting larger game fish like dolphin, wahoo, tuna, and marlin. SST charts can also help offshore fishermen identify essential features of the ocean floor, such as drop-offs and ledges, which can be habitats for different Florida Keys grouper and snapper species. Furthermore, SST charts can provide information on ocean currents, which can help fishermen to plan fishing routes. These SST charts provide valuable information about water temperature distribution across the ocean’s surface, allowing you to understand the currents and how tuna, wahoo, dolphin, marlin, and sailfish utilize them to find concentrations of bait in the Florida Keys.

If you want information on finding Florida Keys dolphin and wahoo, consider using an SST chart service that provides real-time data on water temperature, allowing fishermen to identify areas where Florida Keys dolphin are likely to be found. I started using the SATFISH Offshore yearly subscription service in September 2023. After 3 months of testing the product, I found it accurate and was excited to share my positive experiences with SATFISH offshore. The SATFISH Offshore service offers a comprehensive guide to finding Florida Keys dolphin, and wahoo.

Find Mahi Mahi Offshore Using SatFish High-Def SST

Identify Temperature and Color Breaks-Finding Convergence Zones 

A great technique to enhance your fishing experience is to use SST services to locate temperature breaks. During July and August, a 1-degree temperature break at 85-86 F can hold plankton and baitfish in the area, making it a popular feeding ground for both baitfish and Florida Keys dolphin known as convergence zones. These zones are dynamic regions where different water masses collide, interact, and shape a unique environment for marine life to thrive. To understand this captivating concept, imagine two massive conveyor belts running in opposite directions, each carrying distinct water properties.

The Creation of Convergence Zones

Underwater convergence zones come into existence when ocean currents with different temperatures, salinities, and densities converge. These currents, driven by various factors like wind patterns, tides, and Earth’s rotation, carry water masses from different regions and depths. As these water masses meet, they create boundaries where their characteristics mingle, leading to the formation of convergence zones.

Interplay of Water Masses

Similar to how two rivers merge, the meeting of water masses in convergence zones causes intricate interactions. Think of it as a dance between warm and cold water, with each performing its unique moves. Warm water tends to rise, while cold water sinks. This vertical mixing results in a complex layering effect, influencing the distribution of nutrients, oxygen levels, and temperature gradients within the zone.

Impact on Marine Life

Convergence zones play a crucial role in shaping the ecology of the marine realm. Their dynamic nature provides a rich tapestry of resources, affecting the feeding and breeding behaviors of many marine species. Nutrient-rich waters from deeper layers are often brought up to the surface, fueling the growth of microscopic phytoplankton. This abundance then cascades up the food chain, attracting larger organisms like zooplankton, fish, and even marine mammals.

Visualizing the Impact

Imagine a grand banquet where the convergence zone acts as the central buffet table. Phytoplankton, like delicate appetizers, float near the surface, soaking up sunlight and nutrients. Zooplankton, the main course, feast on this abundant feast, attracting a myriad of fish, resembling eager diners enjoying the bounty. Predators, the apex of this underwater gastronomy, patrol the edges of the convergence zone, ready to pounce on unsuspecting prey.  To locate these Florida Keys convergence zone areas, look for sudden changes in water temperature on the SATFISH SST Charts, which indicate a temperature break.

Additionally, keep an eye out for color breaks where clean offshore water meets the coastal shelf and canyon edges, and refer to the SATFISH bathymetry charts for assistance. These areas will have a unique blue color that contrasts with the surrounding waters. By using SatFish high-def SST, watercolor, and bathymetry layers, you can identify areas where Florida Keys dolphin and wahoo will likely be found. Look for sites where the temperature and color breaks overlap with the top of the drop-off for steep walls and canyons. These areas are ideal for finding wahoo, dolphin, and marlin in the Florida Keys during

Florida Keys Dolphin Fishing Spots

Temperature Breaks-Florida Keys Fishing Spots


Temperature breaks are areas where there is a distinct change in water temperature. These breaks serve as boundaries that separate different habitats and can significantly influence fish behavior. Temperature anomalies refer to abnormal variations in water temperature on either side of a fish break. These anomalies can occur due to natural processes such as upwellings, thermoclines, or weather events like cold fronts or heatwaves. The impact of temperature anomalies on fish behavior is complex and can vary depending on the species involved.

Find the Sargassum Weedlines with SATFISH 

To find the best Florida Keys fishing spots for tuna and dolphin, it’s important to understand their migration patterns and the ocean currents in the area. One strategy is to use the SATFISH Offshore service to identify specific areas where these fish are likely to be present. By combining knowledge of currents with the interpretation of SST charts, you can locate feeding grounds for baitfish and larger predatory fish.

SATFISH Offshore

Florida Keys Offshore Temperature Breaks-SATFISH SST Charts


If you’re seeking a method to locate sargassum weed lines in the Florida Keys, a reliable technique is to use SST services to identify temperature breaks. These weed lines are usually found where warm and cool water masses converge. SST charts are an invaluable tool for fishermen looking to pinpoint these areas and improve their chances of finding sargassum mats. When combined with other information such as ocean currents and sargassum mat indicators, SST data can help Florida Keys fishermen have a more successful dolphin fishing trip

Key Largo Current

Gulf Stream Current Location off the Florida Keys-SATFISH


If you’re looking to catch Mahi Mahi offshore, it’s important to take advantage of temperature anomalies to increase your chances of success. Mahi Mahi are highly migratory and are known to follow temperature breaks to optimize feeding opportunities and locate prey. For instance, Florida Keys Mahi Mahi known to gather around areas where warm and cold-water masses collide, as this creates a rich and diverse ecosystem that supports their prey. These anomalies can create areas where Mahi Mahi are more likely to be concentrated due to increased productivity, food availability, or better spawning conditions. Using SATFISH to locate the edge of the Gulf Stream can be a great starting point for finding Mahi Mahi, as these fish often congregate where warm and cold-water masses meet. By utilizing this strategy, you can improve your chances of a successful fishing trip and potentially catch more Mahi Mahi.Take a look at the GPS screenshot from July 14, 2023!

Florida Keys Fishing Spots



That morning, I discovered a temperature break on SATFISH Offshore and inputted the coordinates into my boat’s GPS. We headed straight to the location and within three hours of leaving the dock, caught a limit of dolphin, including a 30 pound bull dolphin! When fishing for Mahi Mahi offshore, it’s crucial to understand their behavior when encountering temperature break anomalies. Mahi Mahi may either avoid or be attracted to different temperatures depending on the species and their preferences. For instance, during a heatwave, they may seek out cooler water near upwelling zones or move along the sargassum weedline to find more favorable temperatures and baitfish. To increase your chances of finding Mahi Mahi, it’s highly recommended that anglers use SATFISH SST charts to locate temperature breaks offshore. In the summer months, cold water temperature breaks may be more attractive to Mahi Mahi, while warm water temperature breaks may be more effective in the winter months. By utilizing these charts to narrow down your search areas, you can significantly improve your fishing success and catch more Mahi Mahi. Always consult SATFISH SST charts for real-time information on temperature breaks when targeting Mahi Mahi in different seasons.

SATFISH Bathymetry Layer Map-Locate Drop-offs and Ledges

When fishing for wahoo, dolphin, tuna, and marlin, it’s important to know where they like to cruise. Using the SATFISH bathymetry map layer feature can help you locate areas where these fish tend to hang out. Look for drop-offs in 60-1200 feet or more, paying attention to steep walls, canyons, or gentler slopes along the 60-600 feet depth contours. This feature is also helpful when looking for deep-water fishing spots for golden tilefish, queen snappers and snowy grouper. Collecting and analyzing bathymetry data is essential for understanding the physical structure of any marine ecosystems and identifying ideal fishing grounds. By understanding the preferred habitats of different marine species, such as their feeding areas and migration routes, we can locate productive fishing locations. Combining bathymetry data with sea surface temperature and chlorophyll data can help identify areas where physical structure changes, depth, and upwelling create ideal conditions for plankton growth, attracting baitfish, and subsequently larger predatory fish. Bathymetry data can also help assess the impact of fishing activity on specific areas, enabling fisheries management to make informed decisions and implement sustainable practices to protect vulnerable habitats. By analyzing bathymetry data in conjunction with SST and chlorophyll data, fisheries can pinpoint these productive locations and optimize their fishing efforts.

Mahi Mahi Migrations and SATFISH

To effectively locate wahoo and dolphin in your targeted area, it’s important to be familiar with their typical migration patterns. By combining this knowledge with SST charts, you can anticipate where these fish will be at different times of the year.  Learn about the mahi mahi migration through the Florida Keys by clicking here

How to Catch Mahi Mahi

Track Your Location on the Mobile App

Once you have identified the areas where Florida Keys dolphin is likely to be found, track your location on the mobile app to stay along the breaks and contours. This will help you stay in the ideal temperature and color range and increase your chances of a successful catch. 

Additional Tips and Tricks For Finding Mahi Mahi Offshore Using SATFISH SST Charts

When planning an offshore fishing trip in Florida Keys, it’s essential to be prepared and adaptable to the ever-changing elements and variables that come with offshore fishing.  Keep yourself updated with the latest information on currents, water masses, breaks, and chlorophyll concentrations in the Florida Keys using SATFISH.  Regularly check SATFISH SST charts and chlorophyll charts to understand the current conditions and identify potential productive fishing spots.  Ensure that you have the necessary tools and equipment to access real-time data and charts. This may include a reliable internet connection, a navigation system with GPS capabilities, and devices to access SATFISH SST and SATFISH Chlorophyll Charts.
Familiarize yourself with interpreting SATFISH SST and SATFISH Chlorophyll Charts. Understand how temperature gradients, currents, and nutrient-rich areas correlate with fish behavior and movement. This knowledge will help you pinpoint the most promising fishing spots. Each day, assess the Florida Keys current conditions and compare them to the historical trends and patterns you’ve observed. Consider factors such as water temperature, currents, wind direction, and any recent changes in the area. Based on this assessment, make informed decisions about which spots to visit and when.
As a general rule of thumb, when using SATFISH SST charts, looking for areas with significant and abrupt temperature differences is beneficial. These temperature breaks can attract fish and create opportunities for successful fishing trips. Here are some tips for locating dolphin and wahoo in the Florida Keys using SATFISH based on temperature differences:
  • Identify Temperature BreaksKeep an eye out for areas where water temperatures rapidly change. These temperature breaks can occur where warm and cold currents meet or near underwater structures.
  • Look for AnomaliesOnce you’ve identified a temperature break, search for anomalies within the temperature break. These anomalies can appear as fingers or bulges extending from the leading temperature break. Focus your fishing efforts in these areas, as they often concentrate on fish activity and increase your chances of hooking a catch.
  • Consider Physical StructuresTemperature breaks that interact with physical structures, such as canyons or the edge of the continental shelf, can be particularly productive fishing spots. Fish are attracted to these areas because they provide additional cover, food sources, and current dynamics. Target these intersections for potential success.

In addition to using SatFish high-def SST, watercolor, and bathymetry layers, there are other tips and tricks to catch summertime wahoo, tuna, dolphin, and marlin. These include targeting floating structures like isolated sargasso mats, sargassum weed lines, logs, and other pieces of debris that act as fish aggregation devices (FADs). Dolphin is often found around these structures like East, West, 409, and the Islamorada offshore humps because they attract baitfish and other prey species.

SST Charts Explained

Florida Keys SST Chart


The humps offshore of the Florida Keys are considered the best Florida Keys fishing spots for tuna, dolphin, wahoo, and marlin. These offshore Florida Keys humps are also considered the best deep drop fishing spots targeting queen snappers, snowy groupers, yellow eye snappers, and vermilion snappers. Make sure to check out are previous blogs on dolphin fishing

I’ve found that it’s essential to remain cautious of misinformation when analyzing SST charts. To obtain the most accurate information regarding water temperatures, it’s best to examine a satellite shot captured during the late evening or early morning, specifically between 10:00 PM and 10:00 AM, before the sun has had a chance to heat up the surface water.  I’ve come to learn that a SST information at 4:08 PM the day before a fishing trip may not be the most reliable tool for planning a fishing trip next day, but what it does do if give me idea of how the current is moving sargassum weed.


Key Largo Fishing Spots

Learn How to Catch Deep Water Queen Snappers by Clicking Here

The Best Cloud-Free Sea Surface Temperature Chart For Wahoo Fishing

Even through clouds, sea surface temperatures are measured thanks to the latest satellite technology. However, the resolution of such measurements is lower than our high-resolution SST images. To address this issue, SATFISH has developed the Best Cloud Free Sea Surface Temperature Chart, combining high-resolution SST data with standard cloud-free SST observations. They allow SATFISH to produce cloud-free SST images of the highest resolution possible. Using the latest satellite technology, SATFISH can now see the surface temperature under the clouds. Use the SATFISH Cloud Free SST maps to put you in the zone for catching wahoo this winter, even when the weather isn’t cooperating. 

Catch more wahoo

SATFISH Cloud Free SST Charts

During the wahoo fishing season, I use the Cloud-Free Sea Surface Temperature images daily as they can be very helpful in locating clean water with ideal ocean temperatures to hold pelagic fish, even during periods of overcast and poor weather.

SATFISH Discount for Good Karma Sportfishing Followers

SatFish Offshore offers a 30-day free trial for new users. To use this offer, visit their website and create a free account. You must provide essential information to create your account, such as your name, email address, and location.

Receive $20.00 off your first year of SATFISH by entering the code: GOODKARMA at checkout.

Once you have created your account, you can download the SatFish app on iOS or Android to plan your offshore fishing trips. During the 30-day free trial period, you can access all of the app’s features, including high-definition satellite imagery, real-time sea surface temperature data, and advanced planning tools. If you decide to continue using the app after the free trial period ends, you will be charged the regular subscription fee.


In conclusion, using SatFish high-def SST, watercolor, and bathymetry layers can help you locate areas where temperature breaks overlap with color breaks and drop-offs in the Florida Keys. Remember to track your location on the SATFISH mobile app.

Good Karma Sportfishing fishing club members, benefit significantly from learning more about SST charts each month. Each month we discuss the SATFISH SST charts and how to use them effectively; members can gain valuable knowledge and insights that can improve their fishing skills. If you want to join the Good Karma Sportfishing Club, contact me at for details.