Current sea water temperature:
+67.3°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 14 | 67.3°F | January 9 | 67.6°F |
| 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 |
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: 09:26
January 14, wednesday
1200
68°F
SE
14 mph
14 mph
1500
68°F
SE
17 mph
17 mph
1800
68°F
SE
9 mph
9 mph
2100
66°F
E
12 mph
12 mph
January 15, thursday
0000
66°F
E
11 mph
11 mph
0300
66°F
E
9 mph
9 mph
0600
64°F
E
17 mph
17 mph
0900
63°F
S
21 mph
21 mph
