World Resorts USA Siesta Key Weather

Siesta Key Sea Temperature in January

Average sea water temperature in January:
+64.7°F
Minimum sea water temperature in January: 72.3°F
Maximum sea water temperature in January: 55.4°F

Daily sea water temperature in January, °F

Show year:
2026
2025
2024

The average sea water temperature in January of 2026 was 65.0°F. The highest and lowest sea temperatures during the month were 69.3°F and 59.7°F.

Monthly sea water temperature in Siesta Key, °F

Which USA resorts have warmest sea in January?

Place name January 2026 January 2025
Kailua Kona 78.3°F 78.2°F
Honolulu 77.2°F 77.6°F
Hawaii 77.2°F 77.5°F
Maui 77.0°F 76.9°F
Kauai 77.0°F 75.0°F
West Palm Beach 76.6°F 75.5°F
Oahu 76.1°F 76.5°F
Fort Lauderdale 75.9°F 75.1°F
Miami Beach 74.0°F 73.1°F
Key West 72.5°F 70.3°F
Miami 71.2°F 70.7°F
Everglades 70.8°F 68.6°F
South Padre Island 69.5°F 66.7°F
Naples 67.7°F 64.7°F
Cape Coral 67.3°F 64.3°F
Cocoa Beach 66.9°F 60.9°F
Siesta Key 65.0°F 61.5°F
Sarasota 65.0°F 61.2°F
Orlando 64.8°F 59.8°F
Tampa 64.3°F 60.4°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
February 70.7 °F
December 70.9 °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
+50°F
SW 14 mph
Feels like: +46°F
Precip.: 0%
Places in USA:
Name
°F
+30°F
+72°F
+72°F
+63°F
+63°F
+61°F
+66°F
+68°F
+28°F
+59°F
+55°F
+50°F
+46°F
+45°F
+27°F
24 Hours Forecast
Siesta Key
Local time: 08:07
March 18, wednesday
0900
50°F
SW
14 mph
1200
64°F
SW
11 mph
1500
73°F
S
7 mph
1800
70°F
S
12 mph
2100
64°F
SW
13 mph
March 19, thursday
0000
59°F
SW
15 mph
0300
57°F
SW
13 mph
0600
54°F
SW
14 mph
Units of measurement: °C / °F