World Resorts USA Key Largo Weather

Key Largo Sea Temperature in May

Average sea water temperature in May:
+82.9°F
Minimum sea water temperature in May: 88.5°F
Maximum sea water temperature in May: 78.6°F

Daily sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 83.5°F. The highest and lowest sea temperatures during the month were 87.6°F and 79.0°F.

Monthly sea water temperature in Key Largo, °F

Which USA resorts have warmest sea in May?

Place name May 2025 May 2024
Everglades 84.5°F 84.6°F
Islamorada 83.6°F 84.4°F
Key West 83.5°F 84.6°F
Naples 83.5°F 83.8°F
Marco Island 83.5°F 84.0°F
Key Largo 83.5°F 84.1°F
Sanibel Island 83.1°F 83.2°F
Tampa 82.7°F 82.5°F
Sarasota 82.7°F 82.9°F
St. Petersburg 82.6°F 82.4°F
Clearwater Beach 82.6°F 82.5°F
Miami 82.6°F 83.3°F
Siesta Key 82.5°F 82.6°F
Miami Beach 82.4°F 83.0°F
Fort Lauderdale 81.1°F 81.7°F
West Palm Beach 81.1°F 81.5°F
Corpus Christi 80.9°F 81.0°F
Pensacola 80.1°F 79.4°F
South Padre Island 80.0°F 81.1°F
Pass Christian 79.8°F 79.8°F

Best time for vacation in Key Largo

Sunniest months:
December 12 days
March 11 days
April 11 days
Warmest months:
August 85.2 °F
July 85.1 °F
September 84.5 °F
Warmest sea temp:
August 87.6 °F
July 87.1 °F
September 86.6 °F
Coldest months:
January 70.8 °F
December 73.1 °F
February 73.5 °F
Rainiest months:
June 3 days
September 3 days
July 3 days
Windiest months:
November 13.9 mph
March 13.8 mph
April 13.5 mph

Key Largo on a weather map

Key Largo
+73°F
SE 11 mph
Feels like: +77°F
Precip.: 0%
Places in USA:
Name
°F
+30°F
+75°F
+75°F
+66°F
+70°F
+70°F
+70°F
+70°F
+30°F
+79°F
+52°F
+59°F
+57°F
+55°F
+25°F
24 Hours Forecast
Key Largo
Local time: 17:53
December 30, tuesday
1800
73°F
SE
11 mph
2100
68°F
S
18 mph
December 31, wednesday
0000
64°F
S
19 mph
0300
61°F
S
17 mph
0600
59°F
S
19 mph
0900
59°F
S
19 mph
1200
63°F
S
14 mph
1500
68°F
S
9 mph
Units of measurement: °C / °F