Measurements:
°C
°F
CURRENT WEATHER
19:48
Siesta Key
88°F
S 7 mph
Feels like: 94°F
Precip: 18%
World Resorts USA Siesta Key Weather

7 Day Weather Forecast

10.05
mon
DAY
88°F
N 11 mph
precip
43%
NIGHT
82°F
W 11 mph
precip
26%
10.06
tue
DAY
86°F
NW 4 mph
precip
71%
NIGHT
78°F
W 9 mph
precip
30%
10.07
wed
DAY
86°F
N 3 mph
precip
57%
NIGHT
80°F
SW 6 mph
precip
26%
10.08
thu
DAY
86°F
N 5 mph
precip
17%
NIGHT
82°F
SW 9 mph
precip
19%
10.09
fri
DAY
86°F
NW 9 mph
precip
16%
NIGHT
84°F
NW 8 mph
precip
22%
10.10
sat
DAY
88°F
N 15 mph
precip
17%
NIGHT
86°F
NW 6 mph
precip
22%
10.11
sun
DAY
90°F
N 11 mph
precip
8%
NIGHT
86°F
N 5 mph
precip
28%

Siesta Key Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Siesta Key was 26.9°F. The maximum and minimum values were 25.2°F and 29.2°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:
August 92.6 °F
July 92.6 °F
June 91.1 °F
Warmest sea temperature:
August 91.7 °F
July 91.3 °F
September 89.9 °F
The most cold months:
January 68.8 °F
February 73.0 °F
December 73.2 °F
The most rainy months:
July 4 days
September 4 days
June 4 days
The most windy months:
November 10 mph
January 10 mph
October 10 mph
more details