21.12
sun
sun
Day
70°F
SW 6 mph
Precip.
0%
0%
Night
68°F
SW 14 mph
Precip.
0%
0%
22.12
mon
mon
Day
72°F
W 17 mph
Precip.
0%
0%
Night
68°F
W 11 mph
Precip.
0%
0%
23.12
tue
tue
Day
73°F
W 14 mph
Precip.
0%
0%
Night
68°F
W 10 mph
Precip.
0%
0%
24.12
wed
wed
Day
72°F
SW 10 mph
Precip.
0%
0%
Night
66°F
W 10 mph
Precip.
0%
0%
25.12
thu
thu
Day
72°F
SW 7 mph
Precip.
0%
0%
Night
70°F
W 8 mph
Precip.
53%
53%
26.12
fri
fri
Day
70°F
NW 6 mph
Precip.
0%
0%
Night
66°F
NE 7 mph
Precip.
0%
0%
27.12
sat
sat
Day
70°F
NW 6 mph
Precip.
0%
0%
Night
66°F
NE 7 mph
Precip.
0%
0%
sea water
temperature
temperature
| Siesta Key |
monthly
weather
weather
| Siesta Key |
current
weather
weather
| Siesta Key |
14 days
forecast
forecast
| Siesta Key |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 69.7°F. The highest and lowest sea temperatures during the month were 71.6°F and 67.3°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 61.5°F. The highest and lowest sea temperatures during the month were 68.5°F and 55.4°F.
Air temperature in Siesta Key, °F
Precipitation total in Siesta Key, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Siesta Key
Siesta Key on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Siesta Key
Local time: 05:26
December 21, sunday
0600
57°F
W
7 mph
7 mph
0900
64°F
SW
7 mph
7 mph
1200
70°F
SW
6 mph
6 mph
1500
73°F
SE
6 mph
6 mph
1800
73°F
SE
9 mph
9 mph
2100
72°F
S
11 mph
11 mph
December 22, monday
0000
68°F
SW
14 mph
14 mph
0300
66°F
SW
14 mph
14 mph
