World Resorts USA Siesta Key Weather

Siesta Key Sea Temperature in March

Average sea water temperature in March:
+71.1°F
Minimum sea water temperature in March: 78.3°F
Maximum sea water temperature in March: 63.9°F

Daily sea water temperature in March, °F

Show year:
2026
2025
2024

The average sea water temperature in March of 2026 was 70.1°F. The highest and lowest sea temperatures during the month were 73.8°F and 65.3°F.

Monthly sea water temperature in Siesta Key, °F

Which USA resorts have warmest sea in March?

Place name March 2026 March 2025
Miami Beach 76.8°F 75.3°F
Honolulu 76.7°F 76.8°F
Fort Lauderdale 76.6°F 75.8°F
Hawaii 76.5°F 76.7°F
Kauai 76.5°F 75.0°F
Key West 76.5°F 74.5°F
Hilo 76.3°F 76.3°F
Molokai 76.2°F 76.6°F
Miami 76.0°F 74.4°F
Maui 75.5°F 76.0°F
Oahu 74.9°F 75.7°F
Naples 72.6°F 71.4°F
Corpus Christi 71.9°F 67.0°F
Tampa 71.7°F 69.3°F
Cocoa Beach 71.7°F 70.0°F
St. Petersburg 71.2°F 68.8°F
Sarasota 70.6°F 68.6°F
Clearwater Beach 70.2°F 67.6°F
Siesta Key 70.1°F 68.5°F
Houston 69.4°F 64.6°F

Best time for vacation in Siesta Key

Sunniest months:
March 21 days
May 19 days
April 18 days
Warmest months:
July 88.1 °F
August 88.0 °F
June 86.9 °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
+84°F
S 9 mph
Feels like: +93°F
Precip.: 7%
Places in USA:
Name
°F
+66°F
+79°F
+99°F
+73°F
+84°F
+84°F
+75°F
+82°F
+70°F
+68°F
+68°F
+86°F
+86°F
+81°F
+68°F
24 Hours Forecast
Siesta Key
Local time: 21:11
June 28, sunday
0000
79°F
SW
8 mph
0300
77°F
W
5 mph
0600
75°F
W
7 mph
0900
82°F
NW
9 mph
1200
88°F
N
8 mph
1500
86°F
NE
12 mph
1800
86°F
E
9 mph
2100
84°F
NE
4 mph
Units of measurement: °C / °F