30.12
tue
tue
Day
59°F
S 16 mph
Precip.
0%
0%
Night
54°F
S 11 mph
Precip.
0%
0%
31.12
wed
wed
Day
55°F
S 8 mph
Precip.
0%
0%
Night
55°F
S 9 mph
Precip.
0%
0%
01.01
thu
thu
Day
63°F
S 4 mph
Precip.
0%
0%
Night
59°F
S 6 mph
Precip.
0%
0%
02.01
fri
fri
Day
63°F
N 4 mph
Precip.
0%
0%
Night
63°F
NE 4 mph
Precip.
0%
0%
03.01
sat
sat
Day
68°F
NE 12 mph
Precip.
0%
0%
Night
68°F
NE 12 mph
Precip.
0%
0%
04.01
sun
sun
Day
70°F
SE 11 mph
Precip.
0%
0%
Night
63°F
E 10 mph
Precip.
0%
0%
05.01
mon
mon
Day
66°F
NW 9 mph
Precip.
0%
0%
Night
66°F
S 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 69.3°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: 18:19
December 30, tuesday
2100
57°F
S
14 mph
14 mph
December 31, wednesday
0000
54°F
S
11 mph
11 mph
0300
50°F
SW
11 mph
11 mph
0600
45°F
SW
11 mph
11 mph
0900
46°F
SW
11 mph
11 mph
1200
55°F
S
8 mph
8 mph
1500
61°F
SE
11 mph
11 mph
1800
59°F
SE
12 mph
12 mph
