World Resorts USA Siesta Key Weather

Siesta Key Sea Temperature in October

Average sea water temperature in October:
+80.5°F
Minimum sea water temperature in October: 86.9°F
Maximum sea water temperature in October: 73.8°F

Daily sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 80.4°F. The highest and lowest sea temperatures during the month were 84.6°F and 77.4°F.

Monthly sea water temperature in Siesta Key, °F

Which USA resorts have warmest sea in October?

Place name October 2025 October 2024
Key West 83.8°F 82.9°F
West Palm Beach 83.5°F 83.3°F
Fort Lauderdale 83.5°F 83.0°F
Miami Beach 83.4°F 83.4°F
Key Largo 83.0°F 83.1°F
Miami 82.7°F 82.9°F
Everglades 82.5°F 82.6°F
Corpus Christi 82.2°F 80.6°F
Marco Island 82.0°F 81.9°F
Naples 81.9°F 81.6°F
Kauai 81.3°F 79.2°F
Cape Coral 81.1°F 81.2°F
Kailua Kona 80.9°F 80.6°F
Galveston 80.8°F 78.8°F
Honolulu 80.7°F 80.6°F
Hawaii 80.6°F 80.5°F
Siesta Key 80.4°F 80.7°F
Houston 80.4°F 78.8°F
Hilo 80.3°F 79.7°F
Sarasota 80.2°F 80.5°F

Best time for vacation in Siesta Key

Sunniest months:
March 21 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
+73°F
SW 14 mph
Feels like: +77°F
Precip.: 0%
Places in USA:
Name
°F
+59°F
+73°F
+73°F
+88°F
+77°F
+73°F
+73°F
+70°F
+54°F
+72°F
+59°F
+73°F
+72°F
+77°F
+34°F
24 Hours Forecast
Siesta Key
Local time: 15:32
April 07, tuesday
1800
72°F
SW
23 mph
2100
66°F
SW
24 mph
April 08, wednesday
0000
66°F
SW
23 mph
0300
66°F
SW
23 mph
0600
66°F
SW
22 mph
0900
68°F
SW
22 mph
1200
73°F
SW
18 mph
1500
75°F
SW
27 mph
Units of measurement: °C / °F