World Resorts USA Block Island Weather

Block Island weather in August

Weather in Block Island: August

Average day temperature: 74.2°F
Average night temperature: 70.6°F
Sea water temperature: 70.3°F
Number of sunny days: 11 days
Day length: 13.1 - 14.3 hours
Number of rainy days: 3 days
Precipitation totals: 1.2 in.

Air temperature in August, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
13
26
39
52
65
78
91
Day temperature   
Night temperature

The highest day temperature during August of 2024 was 76°F. At the same time the lowest night temperature was 61°F. Day and night temperature averages during August were 71.2°F and 69.5°F.

Sea water temperature in Block Island in August, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
63
66
69
72
75
78

The average sea water temperature in August of 2024 was 69.6°F. The highest and lowest sea temperatures during the month were 71.4°F and 67.6°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
35%
45%
19%

Mostly all days in August are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in August, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.3
0.6
0.9
1.2
1.5
1.7
2.0
1.4
1.1
1.4
1.4
1.2
1.0
1.3
1.5
1.7
1.3
1.5
1.4
1.1
1.4
1.4
1.2
1.2
1.0
1.3
1.5
1.7
1.3
1.5

Precipitation total value in Block Island in August is 1.2 in. Other months of the year show relatively similar values.

Wind speed in August, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.6
5.2
7.9
10.5
13.1
15.7
18.3
20.9
15.3
15.0
12.8
12.3
10.4
11.2
12.3
13.4
14.9
14.1
14.7
15.3
15.0
12.8
12.3
10.9
10.4
11.2
12.3
13.4
14.9
14.1
14.7

The average wind speed value in August is 10.9 mph It makes August one of the least windy months of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.5
3.1
4.6
6.1
7.7
9.2
10.8
4.9
6.5
6.3
7.6
8.6
9.0
8.2
6.7
6.5
5.3
4.5
4.9
6.5
6.3
7.6
8.4
8.6
9.0
8.2
6.7
6.5
5.3
4.5

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 8.4.

Best time for vacation in Block Island

Sunniest months:
November 15 days
September 14 days
June 14 days
Warmest months:
July 75.0 °F
August 74.2 °F
September 68.7 °F
Warmest sea temp:
August 70.3 °F
July 68.6 °F
September 68.4 °F
Coldest months:
February 37.8 °F
January 37.9 °F
March 42.8 °F
Rainiest months:
October 4 days
February 3 days
January 3 days
Windiest months:
December 15.3 mph
November 15.0 mph
March 14.9 mph

Block Island on a weather map

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Name
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24 Hours Forecast
Block Island
Local time: 00:25
January 10, friday
0300
28°F
SE
25 mph
0600
28°F
SE
25 mph
0900
28°F
SE
22 mph
1200
34°F
SE
21 mph
1500
39°F
SE
15 mph
1800
39°F
SE
17 mph
2100
36°F
SE
11 mph
January 11, saturday
0000
36°F
E
7 mph
Units of measurement: °C / °F