Key Largo, Florida, is a popular tourist destination known for its clear waters and abundant marine life. This tropical paradise is a prime spot for swimming, diving, fishing, boating, and more!
But the enjoyment of these activities heavily depends on the sea temperature. After all, nobody wants to jump into water that’s too cold!
This article provides up-to-date information on the current sea temperature in Key Largo, along with historical averages and forecasts, so you can plan your trip accordingly.
Current Sea Temperature in Key Largo
As of today, the sea temperature in Key Largo is about 32°C (90°F). That’s almost 2°C warmer than usual for this time of year.
Here’s a quick look at other conditions you might want to know about:
- Air temperature: 26°C to 30°C (79°F to 86°F)
- Wind speed: 12 km/h (7.5 mph)
- Average wave height: 0.4 meters (1.3 feet)
- Maximum wave height: 0.3 meters (1 foot)
- Wave frequency: 9 seconds
7-Day Sea Water Temperature Forecast
Want to know what the next week looks like for sea temperatures, wave heights, and air temperatures in Key Largo? A seven-day forecast is just a click away!
Generally, the forecast shows a pretty stable trend for the next week. The sea temperature isn’t expected to fluctuate much, and neither is the air temperature.
Key Days to Note
There aren’t any drastic changes on the horizon, but here’s a peek at what you can expect:
- On Tuesday, expect a sea temperature of 84 degrees Fahrenheit and a wave height of around 1 foot.
- Thursday’s forecast calls for a sea temperature of 85 degrees Fahrenheit and a wave height of about 1 foot.
Keep in mind that forecasts can change, so check back often for the latest information!
Historical Sea Water Temperature Data
If you’re planning a trip, you might be wondering what the water temperature has been like in the past. You can find monthly averages for the past couple of years.
Monthly Averages
Typically, the warmest months in Key Largo are July and August, while the coolest are January and February. For example, the average water temperature in August 2025 was a balmy 32°C (about 90°F).
Recent Temperature Variations
It’s also useful to know how much the water temperature has fluctuated recently. Over the past couple of months, there may have been some ups and downs.
These changes can be caused by seasonal shifts, changing weather patterns, and, of course, the long-term effects of climate change.
What Affects the Sea Temperature in Key Largo?
The sun has the biggest impact. Solar radiation heats the ocean’s surface. But many other things play a role, too.
Ocean currents move water around the globe. Warm currents can bring warmer water from other places, while cold currents can lower the temperature around Key Largo.
Weather patterns also matter. Air temperature, wind, and rain all influence how warm or cool the sea is at any given time.
Closing Thoughts
So, that’s the scoop on Key Largo’s sea temperatures: what they are right now, what they’re predicted to be, and how they’ve changed over time.
Keeping an eye on these temperatures is important for all kinds of reasons – whether you’re planning a vacation, heading out for a swim, or just want to know what’s happening in the ocean.
Remember, though, that this information is just a guide. Always check with local sources for the very latest updates before you head out on the water!