Current sea water temperature:
+68.4°F
| Minimum sea water temperature in January: | 72.3°F |
| Maximum sea water temperature in January: | 55.4°F |
| Average sea water temperature in January: | 64.8°F |
| more information | |
14 days
forecast
forecast
| Siesta Key |
monthly
weather
weather
| Siesta Key |
Sea water temperature for the last 10 days:
| January 13 | 68.4°F | January 8 | 67.6°F |
| January 12 | 68.9°F | January 7 | 67.3°F |
| January 11 | 69.3°F | January 6 | 66.7°F |
| January 10 | 68.5°F | January 5 | 66.0°F |
| January 9 | 67.6°F | January 4 | 65.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Siesta Key?
Based on the data about daily sea water temperature for the last three years the warmest sea in Siesta Key was noticed in August, July and September.
Monthly Sea Temperatures in Siesta Key, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 88.6°F. The highest and lowest sea temperatures during the month were 90.1°F and 86.7°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 86.9°F. The highest and lowest sea temperatures during the month were 89.1°F and 85.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 84.9°F. The highest and lowest sea temperatures during the month were 86.7°F and 83.3°F.
current
weather
weather
| Siesta Key |
weather in
January
January
| Siesta Key |
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: 06:17
January 13, tuesday
0900
59°F
SW
9 mph
9 mph
1200
64°F
SW
7 mph
7 mph
1500
72°F
S
6 mph
6 mph
1800
73°F
S
8 mph
8 mph
2100
70°F
S
10 mph
10 mph
January 14, wednesday
0000
66°F
S
7 mph
7 mph
0300
66°F
SE
9 mph
9 mph
0600
66°F
SE
11 mph
11 mph
