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
South Padre Island 84.0°F 82.4°F
Key West 83.8°F 82.9°F
Fort Lauderdale 83.5°F 83.0°F
Miami Beach 83.4°F 83.4°F
Islamorada 83.1°F 82.9°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
Princeville 81.3°F 79.2°F
Kauai 81.3°F 79.2°F
Cape Coral 81.1°F 81.2°F
Kailua Kona 80.9°F 80.6°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
Sarasota 80.2°F 80.5°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 66.6 °F
December 70.1 °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
+64°F
W 4 mph
Feels like: +64°F
Precip.: 0%
Places in USA:
Name
°F
+30°F
+75°F
+75°F
+45°F
+55°F
+70°F
+77°F
+70°F
+23°F
+57°F
+48°F
+63°F
+63°F
+46°F
+5°F
24 Hours Forecast
Siesta Key
Local time: 00:58
December 05, friday
0300
63°F
W
6 mph
0600
63°F
NW
7 mph
0900
66°F
N
7 mph
1200
70°F
N
12 mph
1500
72°F
N
11 mph
1800
72°F
N
7 mph
2100
72°F
N
7 mph
December 06, saturday
0000
72°F
NE
6 mph
Units of measurement: °C / °F