Key Largo water temperature

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Surrounded by a crystal clear, warm ocean teeming with marine life, the island of Key Largo thoroughly deserves its reputation as ‘The Dive Capital of the World’.

This largest and northernmost of the Florida Keys boasts two state parks, a national park and a national marine sanctuary which was the first U.S. underwater park.


Recent water temperature for Key Largo is: 67°F

Due to the tropical climate it enjoys all year round, Key Largo is a comfortably warm place to visit any time of the year. The average summer temperature is 89 degrees, but this is made comfortable by cooling ocean waters. In the winter temperatures hover around 75 to 80 degrees, with occasional warmer days.


The island is accessible by two roads. After flying in from Miami International Airport you can be on Key Largo in less than an hour by car or shuttle bus. A Greyhound service is also available.


14 Days Weather Forecast for Key Largo

29. Jan.
rain risk 46%

↓ 65 / ↑ 70 °F
30. Jan.
rain risk 7%

↓ 67 / ↑ 75 °F
31. Jan.
rain risk 93%

↓ 68 / ↑ 71 °F
1. Feb.
rain risk 76%

↓ 72 / ↑ 78 °F
2. Feb.
rain risk 65%

↓ 67 / ↑ 80 °F
3. Feb.
rain risk 94%

↓ 72 / ↑ 76 °F
4. Feb.
rain risk 97%

↓ 72 / ↑ 80 °F
5. Feb.
rain risk 77%

↓ 66 / ↑ 74 °F
6. Feb.
rain risk 79%

↓ 64 / ↑ 76 °F
7. Feb.
rain risk 100%

↓ 62 / ↑ 71 °F
8. Feb.
rain risk 10%

↓ 70 / ↑ 73 °F
9. Feb.
rain risk 10%

↓ 67 / ↑ 77 °F
10. Feb.
rain risk 10%

↓ 64 / ↑ 76 °F
11. Feb.
rain risk 10%

↓ 68 / ↑ 77 °F


Best time to Visit Key Largo

With the Key Largo water temperature ranging from 69 degrees in January up to 87 degrees in July and August, it is ideal for swimming throughout the year, and with a wide range of ocean-going activities on offer including scuba-diving, snorkeling, sports fishing and boating, there is plenty to do.

The ocean to the east of Key Largo is a treasure trove of living coral formations, exotically beautiful fish and fascinating shipwrecks just waiting to be explored.


Just remember to check the local weather forecast before venturing out, don’t touch the delicate coral, and don’t feed the fish, otherwise this warm water wonderland is your oyster.
Picture Copyright: Flickr CC 2.0 Allie_Caulfield

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