18.07
sat
sat
Day
79°F
NW 11 mph
Precip.
78%
78%
Night
82°F
N 11 mph
Precip.
12%
12%
19.07
sun
sun
Day
88°F
N 17 mph
Precip.
5%
5%
Night
84°F
N 9 mph
Precip.
10%
10%
20.07
mon
mon
Day
88°F
N 16 mph
Precip.
12%
12%
Night
84°F
NE 7 mph
Precip.
9%
9%
21.07
tue
tue
Day
86°F
N 12 mph
Precip.
17%
17%
Night
84°F
E 7 mph
Precip.
6%
6%
22.07
wed
wed
Day
86°F
NE 9 mph
Precip.
15%
15%
Night
84°F
E 6 mph
Precip.
6%
6%
23.07
thu
thu
Day
86°F
E 7 mph
Precip.
5%
5%
Night
84°F
NE 8 mph
Precip.
6%
6%
24.07
fri
fri
Day
86°F
E 6 mph
Precip.
17%
17%
Night
82°F
SW 8 mph
Precip.
11%
11%
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 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 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.
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: 02:18
July 18, saturday
0300
73°F
N
3 mph
3 mph
0600
73°F
N
7 mph
7 mph
0900
73°F
N
12 mph
12 mph
1200
79°F
NW
11 mph
11 mph
1500
84°F
N
14 mph
14 mph
1800
86°F
N
15 mph
15 mph
2100
82°F
N
11 mph
11 mph
July 19, sunday
0000
82°F
N
11 mph
11 mph
