World Resorts USA Siesta Key Weather

Siesta Key Sea Temperature in May

Average sea water temperature in May:
+80.8°F
Minimum sea water temperature in May: 86.9°F
Maximum sea water temperature in May: 76.5°F

Daily sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 82.5°F. The highest and lowest sea temperatures during the month were 86.9°F and 77.7°F.

Monthly sea water temperature in Siesta Key, °F

Which USA resorts have warmest sea in May?

Place name May 2025 May 2024
Everglades 84.5°F 84.6°F
Key West 83.5°F 84.6°F
Naples 83.5°F 83.8°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
Orange Beach 79.8°F 78.7°F
Galveston 79.6°F 79.5°F
Pensacola Beach 79.6°F 78.7°F

Best time for vacation in Siesta Key

Sunniest months:
March 20 days
May 18 days
April 17 days
Warmest months:
July 88.1 °F
August 88.0 °F
June 86.3 °F
Warmest sea temp:
August 87.6 °F
July 87.1 °F
September 85.8 °F
Coldest months:
January 66.9 °F
December 70.9 °F
February 71.0 °F
Rainiest months:
June 5 days
July 4 days
September 3 days
Windiest months:
November 10.5 mph
January 10.4 mph
October 10.4 mph

Siesta Key on a weather map

Siesta Key
+48°F
W 7 mph
Feels like: +46°F
Precip.: 0%
Places in USA:
Name
°F
+39°F
+70°F
+70°F
+61°F
+57°F
+57°F
+70°F
+61°F
+25°F
+57°F
+55°F
+48°F
+50°F
+66°F
+28°F
24 Hours Forecast
Siesta Key
Local time: 03:34
February 26, thursday
0600
46°F
NW
8 mph
0900
52°F
NW
8 mph
1200
66°F
N
9 mph
1500
68°F
NE
9 mph
1800
70°F
N
7 mph
2100
66°F
N
6 mph
February 27, friday
0000
64°F
N
6 mph
0300
64°F
N
8 mph
Units of measurement: °C / °F