World Resorts USA Block Island Weather

Summer weather in Block Island

Weather in Block Island in Summer

June July August
Average day temperature: 67.3°F 75.0°F 74.2°F
Average night temperature: 63.1°F 71.0°F 70.6°F
Sea water temperature: 60.3°F 68.6°F 70.3°F
Number of sunny days: 14 days 12 days 11 days
Day length: 14.9 - 15.1 h. 14.4 - 15.1 h. 13.1 - 14.3 h.
Number of rainy days: 2 days 2 days 3 days
Precipitation totals: 1.0 in. 1.2 in. 1.2 in.

Day & Night air temperature, °F

June
July
August
0
12
24
36
48
60
72
84
96
74.2
75.0
67.3
70.6
71.0
63.1
Day temperature   
Night temperature

Sea water temperature, °F

June
July
August
0
12
24
36
48
60
72
84
70.3
68.6
60.3

Precipitation total, in.

June
July
August
0.0
0.2
0.4
0.6
0.8
1.0
1.3
1.5
1.2
1.2
1
Sunny, partly cloudy and cloudy days
June
July
August
0
5
10
15
20
25
30
35
6
8
8
14
12
9
11
12
14
Cloudy days   
Partly cloudy days   
Sunny days
Wind speed, mph
June
July
August
0.0
1.9
3.8
5.8
7.7
9.6
11.5
13.4
15.4
10.9
10.4
11.2
Average sunny hours
June
July
August
0
1
2
3
4
5
6
7
8
9
10
8.4
8.6
9

Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.

Best time for vacation in Block Island

Sunniest months:
November 15 days
June 14 days
September 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:
January 37.4 °F
February 37.4 °F
March 42.7 °F
Rainiest months:
October 4 days
January 3 days
November 3 days
Windiest months:
January 15.6 mph
March 15.4 mph
December 15.3 mph

Block Island on a weather map

Leaflet | Tiles © Esri
Places in USA:
Name
°F
+39°F
+48°F
+73°F
+73°F
+72°F
+59°F
+75°F
+45°F
+81°F
+59°F
+54°F
+79°F
+79°F
+64°F
+37°F
24 Hours Forecast
Block Island
Local time: 11:09
April 11, friday
1200
41°F
W
17 mph
1500
43°F
W
17 mph
1800
43°F
W
17 mph
2100
43°F
W
22 mph
April 12, saturday
0000
43°F
SW
25 mph
0300
41°F
SW
27 mph
0600
37°F
SW
39 mph
0900
37°F
SW
35 mph
Units of measurement: °C / °F