Current sea water temperature:
+88.0°F
| Minimum sea water temperature in July: | 89.1°F |
| Maximum sea water temperature in July: | 83.7°F |
| Average sea water temperature in July: | 87.2°F |
| more information | |
14 days
forecast
forecast
| Siesta Key |
monthly
weather
weather
| Siesta Key |
Sea water temperature for the last 10 days:
| July 17 | 88.0°F | July 12 | 88.3°F |
| July 16 | 87.8°F | July 11 | 88.9°F |
| July 15 | 88.3°F | July 10 | 88.5°F |
| July 14 | 88.3°F | July 9 | 88.7°F |
| July 13 | 88.5°F | July 8 | 88.0°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:
2026
2025
2024
The average sea water temperature in July of 2026 was 88.3°F. The highest and lowest sea temperatures during the month were 88.9°F and 87.8°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
July
July
| 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: 00:11
July 18, saturday
0300
75°F
SW
1 mph
1 mph
0600
75°F
NW
6 mph
6 mph
0900
82°F
N
9 mph
9 mph
1200
86°F
N
15 mph
15 mph
1500
84°F
N
14 mph
14 mph
1800
84°F
N
15 mph
15 mph
2100
84°F
N
12 mph
12 mph
July 19, sunday
0000
82°F
N
13 mph
13 mph
