13.08
thu
thu
Day
75°F
NE 11 mph
Precip.
16%
16%
Night
72°F
SE 11 mph
Precip.
12%
12%
14.08
fri
fri
Day
75°F
NE 7 mph
Precip.
4%
4%
Night
70°F
S 16 mph
Precip.
6%
6%
15.08
sat
sat
Day
72°F
SW 5 mph
Precip.
2%
2%
Night
72°F
N 11 mph
Precip.
4%
4%
16.08
sun
sun
Day
73°F
N 15 mph
Precip.
17%
17%
Night
72°F
N 23 mph
Precip.
86%
86%
17.08
mon
mon
Day
75°F
E 6 mph
Precip.
10%
10%
Night
73°F
S 13 mph
Precip.
10%
10%
18.08
tue
tue
Day
72°F
W 12 mph
Precip.
7%
7%
Night
70°F
NW 6 mph
Precip.
16%
16%
19.08
wed
wed
Day
73°F
NE 7 mph
Precip.
8%
8%
Night
73°F
NE 11 mph
Precip.
24%
24%
20.08
thu
thu
Day
75°F
NE 9 mph
Precip.
12%
12%
Night
75°F
E 9 mph
Precip.
19%
19%
21.08
fri
fri
Day
75°F
NE 10 mph
Precip.
11%
11%
Night
75°F
NE 16 mph
Precip.
14%
14%
22.08
sat
sat
Day
75°F
NE 19 mph
Precip.
15%
15%
Night
75°F
SE 11 mph
Precip.
66%
66%
23.08
sun
sun
Day
73°F
E 11 mph
Precip.
8%
8%
Night
70°F
W 13 mph
Precip.
17%
17%
24.08
mon
mon
Day
70°F
W 10 mph
Precip.
9%
9%
Night
70°F
N 10 mph
Precip.
9%
9%
25.08
tue
tue
Day
72°F
N 9 mph
Precip.
9%
9%
Night
73°F
NE 17 mph
Precip.
15%
15%
26.08
wed
wed
Day
77°F
E 10 mph
Precip.
9%
9%
Night
75°F
NE 11 mph
Precip.
7%
7%
sea water
temperature
temperature
| Block Island |
monthly
weather
weather
| Block Island |
current
weather
weather
| Block Island |
7 days
forecast
forecast
| Block Island |
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 69.0°F. The highest and lowest sea temperatures during the month were 71.1°F and 66.9°F.
Air temperature in Block Island, °F
Precipitation total in Block Island, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Block Island
Block Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Block Island
Local time: 22:24
August 14, friday
0000
72°F
SE
11 mph
11 mph
0300
72°F
SE
11 mph
11 mph
0600
68°F
S
9 mph
9 mph
0900
72°F
SE
6 mph
6 mph
1200
75°F
NE
7 mph
7 mph
1500
77°F
NE
12 mph
12 mph
1800
75°F
NE
11 mph
11 mph
2100
72°F
S
4 mph
4 mph
