12.08
wed
wed
Day
95°F
E 10 mph
Precip.
4%
4%
Night
81°F
SE 7 mph
Precip.
10%
10%
13.08
thu
thu
Day
93°F
E 9 mph
Precip.
5%
5%
Night
86°F
SE 8 mph
Precip.
5%
5%
14.08
fri
fri
Day
90°F
E 2 mph
Precip.
4%
4%
Night
84°F
SW 7 mph
Precip.
7%
7%
15.08
sat
sat
Day
90°F
NW 5 mph
Precip.
3%
3%
Night
82°F
W 5 mph
Precip.
5%
5%
16.08
sun
sun
Day
86°F
NE 5 mph
Precip.
4%
4%
Night
84°F
SE 8 mph
Precip.
5%
5%
17.08
mon
mon
Day
88°F
E 9 mph
Precip.
4%
4%
Night
84°F
SE 9 mph
Precip.
5%
5%
18.08
tue
tue
Day
86°F
SE 7 mph
Precip.
4%
4%
Night
84°F
SE 7 mph
Precip.
6%
6%
19.08
wed
wed
Day
88°F
E 4 mph
Precip.
5%
5%
Night
84°F
NE 5 mph
Precip.
7%
7%
20.08
thu
thu
Day
88°F
N 7 mph
Precip.
4%
4%
Night
86°F
W 7 mph
Precip.
19%
19%
21.08
fri
fri
Day
88°F
N 5 mph
Precip.
4%
4%
Night
86°F
NW 5 mph
Precip.
6%
6%
22.08
sat
sat
Day
86°F
NE 6 mph
Precip.
5%
5%
Night
77°F
W 11 mph
Precip.
55%
55%
23.08
sun
sun
Day
84°F
N 7 mph
Precip.
7%
7%
Night
84°F
SW 3 mph
Precip.
43%
43%
24.08
mon
mon
Day
86°F
N 7 mph
Precip.
36%
36%
Night
84°F
W 7 mph
Precip.
8%
8%
25.08
tue
tue
Day
86°F
N 6 mph
Precip.
6%
6%
Night
86°F
N 8 mph
Precip.
17%
17%
sea water
temperature
temperature
| Siesta Key |
monthly
weather
weather
| Siesta Key |
current
weather
weather
| Siesta Key |
7 days
forecast
forecast
| Siesta Key |
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: 23:58
August 13, thursday
0000
81°F
SE
7 mph
7 mph
0300
79°F
SE
7 mph
7 mph
0600
77°F
SE
5 mph
5 mph
0900
82°F
S
5 mph
5 mph
1200
93°F
E
9 mph
9 mph
1500
88°F
E
13 mph
13 mph
1800
88°F
SE
12 mph
12 mph
2100
86°F
SE
8 mph
8 mph
