World Resorts USA Block Island Weather

Block Island 14 Days Forecast

23.12
tue
Day
37°F
E 14 mph
Precip.
100%
Night
41°F
E 19 mph
Precip.
0%
24.12
wed
Day
43°F
SE 30 mph
Precip.
0%
Night
36°F
SW 8 mph
Precip.
0%
25.12
thu
Day
39°F
NE 29 mph
Precip.
0%
Night
34°F
SE 25 mph
Precip.
0%
26.12
fri
Day
27°F
S 16 mph
Precip.
0%
Night
28°F
W 9 mph
Precip.
100%
27.12
sat
Day
30°F
SW 14 mph
Precip.
84%
Night
30°F
S 6 mph
Precip.
0%
28.12
sun
Day
36°F
NE 12 mph
Precip.
0%
Night
45°F
NE 26 mph
Precip.
100%
29.12
mon
Day
30°F
E 32 mph
Precip.
0%
Night
28°F
E 39 mph
Precip.
0%
30.12
tue
Day
28°F
E 29 mph
Precip.
0%
Night
30°F
SE 26 mph
Precip.
0%
31.12
wed
Day
30°F
SE 19 mph
Precip.
0%
Night
28°F
SE 14 mph
Precip.
0%
01.01
thu
Day
34°F
E 19 mph
Precip.
0%
Night
39°F
E 24 mph
Precip.
0%
02.01
fri
Day
39°F
E 14 mph
Precip.
0%
Night
39°F
E 3 mph
Precip.
0%
03.01
sat
Day
43°F
NE 10 mph
Precip.
0%
Night
46°F
NE 14 mph
Precip.
0%
04.01
sun
Day
45°F
NE 22 mph
Precip.
0%
Night
45°F
E 17 mph
Precip.
0%
05.01
mon
Day
34°F
SE 22 mph
Precip.
0%
Night
30°F
S 11 mph
Precip.
0%

Sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 48.4°F. The highest and lowest sea temperatures during the month were 51.6°F and 45.0°F.

Sea water temperature in January, °F

Show year:
2025
2024
2023

The average sea water temperature in January of 2025 was 43.1°F. The highest and lowest sea temperatures during the month were 47.1°F and 41.0°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

Sunniest months:
November 16 days
September 14 days
October 14 days
Warmest months:
July 74.4 °F
August 73.5 °F
September 68.8 °F
Warmest sea temp:
August 70.1 °F
July 68.6 °F
September 68.3 °F
Coldest months:
January 37.4 °F
February 37.4 °F
March 42.7 °F
Rainiest months:
October 4 days
January 3 days
March 3 days
Windiest months:
November 15.7 mph
January 15.6 mph
March 15.4 mph

Block Island on a weather map

Block Island
+41°F
NE 9 mph
Feels like: +37°F
Precip.: 100%
Places in USA:
Name
°F
+39°F
+73°F
+73°F
+68°F
+61°F
+73°F
+77°F
+68°F
+37°F
+64°F
+57°F
+70°F
+70°F
+70°F
+39°F
24 Hours Forecast
Block Island
Local time: 21:37
December 24, wednesday
0000
41°F
E
19 mph
0300
39°F
E
22 mph
0600
39°F
E
21 mph
0900
39°F
SE
30 mph
1200
43°F
SE
30 mph
1500
45°F
SE
29 mph
1800
39°F
S
22 mph
2100
37°F
S
14 mph
Units of measurement: °C / °F