World Resorts USA Block Island Weather

Block Island 14 Days Forecast

25.05
mon
Day
59°F
E 12 mph
Precip.
0%
Night
57°F
E 11 mph
Precip.
0%
26.05
tue
Day
59°F
N 6 mph
Precip.
0%
Night
55°F
NE 11 mph
Precip.
64%
27.05
wed
Day
59°F
NE 12 mph
Precip.
68%
Night
59°F
E 11 mph
Precip.
71%
28.05
thu
Day
63°F
E 7 mph
Precip.
100%
Night
57°F
SE 11 mph
Precip.
0%
29.05
fri
Day
59°F
NE 11 mph
Precip.
0%
Night
52°F
SE 21 mph
Precip.
0%
30.05
sat
Day
52°F
SW 29 mph
Precip.
70%
Night
50°F
SW 14 mph
Precip.
0%
31.05
sun
Day
54°F
N 6 mph
Precip.
0%
Night
55°F
NE 21 mph
Precip.
0%
01.06
mon
Day
61°F
E 15 mph
Precip.
0%
Night
57°F
SE 9 mph
Precip.
100%
02.06
tue
Day
59°F
SW 12 mph
Precip.
0%
Night
59°F
NE 10 mph
Precip.
0%
03.06
wed
Day
61°F
NE 12 mph
Precip.
0%
Night
61°F
NE 16 mph
Precip.
0%
04.06
thu
Day
61°F
NE 15 mph
Precip.
0%
Night
61°F
NE 14 mph
Precip.
100%
05.06
fri
Day
63°F
NE 17 mph
Precip.
0%
Night
61°F
NE 13 mph
Precip.
0%
06.06
sat
Day
63°F
NE 13 mph
Precip.
0%
Night
61°F
NE 15 mph
Precip.
100%
07.06
sun
Day
66°F
E 13 mph
Precip.
0%
Night
63°F
SE 14 mph
Precip.
0%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 49.4°F. The highest and lowest sea temperatures during the month were 55.0°F and 46.6°F.

Sea water temperature in June, °F

Show year:
2025
2024
2023

The average sea water temperature in June of 2025 was 59.7°F. The highest and lowest sea temperatures during the month were 65.8°F and 54.1°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 36.8 °F
February 36.9 °F
December 42.5 °F
Rainiest months:
October 4 days
January 3 days
March 3 days
Windiest months:
December 16.1 mph
January 16.0 mph
November 15.7 mph

Block Island on a weather map

Block Island
+59°F
NE 12 mph
Feels like: +57°F
Precip.: 0%
Places in USA:
Name
°F
+66°F
+77°F
+77°F
+93°F
+70°F
+79°F
+81°F
+72°F
+66°F
+66°F
+57°F
+82°F
+84°F
+77°F
+61°F
24 Hours Forecast
Block Island
Local time: 21:56
May 26, tuesday
0000
57°F
E
11 mph
0300
57°F
S
7 mph
0600
57°F
SW
8 mph
0900
59°F
SW
5 mph
1200
59°F
N
6 mph
1500
59°F
NE
7 mph
1800
59°F
NE
9 mph
2100
57°F
NE
11 mph
Units of measurement: °C / °F