World Resorts USA Siesta Key Weather

Siesta Key Sea Temperature in July

Average sea water temperature in July:
+87.1°F
Minimum sea water temperature in July: 89.1°F
Maximum sea water temperature in July: 83.7°F

Daily sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 87.6°F. The highest and lowest sea temperatures during the month were 88.9°F and 85.3°F.

Monthly sea water temperature in Siesta Key, °F

Which USA resorts have warmest sea in July?

Place name July 2026 July 2025
Key West 88.5°F 86.7°F
Clearwater Beach 87.9°F 87.1°F
Naples 87.7°F 86.6°F
Tampa 87.6°F 86.8°F
Sarasota 87.6°F 86.9°F
Siesta Key 87.6°F 86.9°F
New Orleans 87.5°F 87.4°F
Miami 87.4°F 86.3°F
Miami Beach 87.0°F 86.0°F
Houston 86.7°F 86.3°F
Fort Lauderdale 86.6°F 85.0°F
Hilton Head Island 86.3°F 85.7°F
St. George Island 86.3°F 86.4°F
Tybee Island 86.3°F 85.4°F
West Palm Beach 86.1°F 84.6°F
Panama City Beach 86.0°F 86.3°F
Santa Rosa Beach 85.9°F 86.2°F
Pensacola Beach 85.8°F 86.7°F
Destin 85.8°F 86.3°F
Charleston (SC) 85.8°F 84.7°F

Best time for vacation in Siesta Key

Sunniest months:
March 21 days
May 19 days
April 18 days
Warmest months:
July 88.3 °F
August 88.0 °F
June 87.0 °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:
July 4 days
June 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
W 12 mph
Feels like: +77°F
Precip.: 14%
Places in USA:
Name
°F
+77°F
+75°F
+77°F
+91°F
+68°F
+79°F
+72°F
+77°F
+77°F
+70°F
+57°F
+68°F
+73°F
+79°F
+72°F
24 Hours Forecast
Siesta Key
Local time: 03:13
August 07, friday
0600
73°F
W
9 mph
0900
79°F
W
11 mph
1200
90°F
W
9 mph
1500
88°F
W
6 mph
1800
88°F
W
9 mph
2100
82°F
W
11 mph
August 08, saturday
0000
81°F
W
8 mph
0300
81°F
NW
10 mph
Units of measurement: °C / °F