Current sea water temperature:
+86.7°F
| Minimum sea water temperature in September: | 88.3°F |
| Maximum sea water temperature in September: | 83.1°F |
| Average sea water temperature in September: | 86.0°F |
| more information | |
14 days
forecast
forecast
| Siesta Key |
monthly
weather
weather
| Siesta Key |
Sea water temperature for the last 10 days:
| September 19 | 86.7°F | September 14 | 88.0°F |
| September 18 | 86.9°F | September 13 | 88.0°F |
| September 17 | 87.6°F | September 12 | 88.0°F |
| September 16 | 87.8°F | September 11 | 87.8°F |
| September 15 | 87.8°F | September 10 | 87.8°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 87.1°F. The highest and lowest sea temperatures during the month were 88.3°F and 85.5°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 87.6°F. The highest and lowest sea temperatures during the month were 88.9°F and 85.3°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 87.7°F. The highest and lowest sea temperatures during the month were 88.3°F and 86.7°F.
current
weather
weather
| Siesta Key |
weather in
September
September
| 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: 04:39