Measurements:
°C
°F
CURRENT WEATHER
16:22
Siesta Key
98°F
E 11 mph
Feels like: 114°F
Precip: 4%
World Resorts USA Siesta Key Weather

7 Day Weather Forecast

08.05
wed
DAY
98°F
NW 4 mph
precip
3%
NIGHT
82°F
NW 9 mph
precip
10%
08.06
thu
DAY
90°F
W 9 mph
precip
11%
NIGHT
84°F
W 13 mph
precip
11%
08.07
fri
DAY
92°F
W 10 mph
precip
10%
NIGHT
84°F
W 10 mph
precip
14%
08.08
sat
DAY
92°F
NW 11 mph
precip
7%
NIGHT
86°F
W 8 mph
precip
8%
08.09
sun
DAY
92°F
NW 6 mph
precip
5%
NIGHT
86°F
W 11 mph
precip
34%
08.10
mon
DAY
90°F
N 7 mph
precip
7%
NIGHT
86°F
NW 4 mph
precip
6%
08.11
tue
DAY
90°F
N 6 mph
precip
4%
NIGHT
90°F
SE 5 mph
precip
5%

Siesta Key Sea Water Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Siesta Key was 31.4°F. The maximum and minimum values were 30.4°F and 32.3°F respectively.

Siesta Key on the Weather Map

Best Time to Visit Siesta Key
The most sunny months:
March 21 days
May 19 days
April 18 days
The most warm months:
July 92.6 °F
August 92.2 °F
June 91.1 °F
Warmest sea temperature:
August 91.8 °F
July 91.3 °F
September 89.8 °F
The most cold months:
January 68.8 °F
February 73.0 °F
December 73.2 °F
The most rainy months:
July 4 days
June 4 days
September 3 days
The most windy months:
November 10 mph
January 10 mph
October 10 mph
more details