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August weather forecast in Block Island

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

27 July, sun

	761 mmHg		82%
	6.7 m/s		+21

27 July, Sunday. day, 23°; night, 21°; clear

28 July, mon

	761 mmHg		85%
	6.3 m/s		+21

28 July, Monday. day, 23°; night, 21°; rain

29 July, tue

	761 mmHg		84%
	6.6 m/s		+22

29 July, Tuesday. day, 23°; night, 21°; rain

30 July, wed

	761 mmHg		81%
	6.2 m/s		+22

30 July, Wednesday. day, 23°; night, 21°; clear

31 July, thu

	762 mmHg		82%
	6.2 m/s		+22

31 July, Thursday. day, 23°; night, 20°; clear

1 August, fri

	762 mmHg		83%
	6.2 m/s		+22

1 August, Friday. day, 23°; night, 21°; rain

2 August, sat

	762 mmHg		82%
	6.5 m/s		+22

2 August, Saturday. day, 23°; night, 21°; clear

3 August, sun

	762 mmHg		83%
	6.4 m/s		+22

3 August, Sunday. day, 24°; night, 21°; clear

4 August, mon

	762 mmHg		86%
	6.2 m/s		+22

4 August, Monday. day, 23°; night, 21°; partly cloudy

5 August, tue

	761 mmHg		84%
	6.5 m/s		+22

5 August, Tuesday. day, 23°; night, 21°; clear

6 August, wed

	762 mmHg		81%
	6.3 m/s		+22

6 August, Wednesday. day, 23°; night, 21°; partly cloudy

7 August, thu

	762 mmHg		80%
	6.7 m/s		+22

7 August, Thursday. day, 23°; night, 20°; partly cloudy

8 August, fri

	761 mmHg		81%
	6.4 m/s		+22

8 August, Friday. day, 23°; night, 21°; rain

9 August, sat

	762 mmHg		81%
	6.5 m/s		+22

9 August, Saturday. day, 24°; night, 21°; clear

10 August, sun

	761 mmHg		82%
	6.7 m/s		+22

10 August, Sunday. day, 23°; night, 21°; clear

11 August, mon

	761 mmHg		83%
	6.3 m/s		+22

11 August, Monday. day, 23°; night, 21°; rain

12 August, tue

	761 mmHg		84%
	6 m/s		+22

12 August, Tuesday. day, 23°; night, 21°; rain

13 August, wed

	761 mmHg		84%
	6.5 m/s		+22

13 August, Wednesday. day, 23°; night, 21°; rain

14 August, thu

	761 mmHg		82%
	6 m/s		+22

14 August, Thursday. day, 23°; night, 21°; partly cloudy

15 August, fri

	762 mmHg		83%
	6.1 m/s		+22

15 August, Friday. day, 23°; night, 21°; rain

16 August, sat

	763 mmHg		84%
	6 m/s		+22

16 August, Saturday. day, 23°; night, 20°; overcast

17 August, sun

	762 mmHg		84%
	6.1 m/s		+22

17 August, Sunday. day, 23°; night, 21°; partly cloudy

18 August, mon

	761 mmHg		83%
	6.5 m/s		+22

18 August, Monday. day, 23°; night, 21°; rain

19 August, tue

	761 mmHg		80%
	6.5 m/s		+22

19 August, Tuesday. day, 23°; night, 20°; clear

20 August, wed

	763 mmHg		80%
	6.1 m/s		+22

20 August, Wednesday. day, 22°; night, 20°; clear

21 August, thu

	763 mmHg		82%
	6.5 m/s		+22

21 August, Thursday. day, 23°; night, 20°; partly cloudy

22 August, fri

	762 mmHg		82%
	6.8 m/s		+22

22 August, Friday. day, 23°; night, 20°; partly cloudy

23 August, sat

	762 mmHg		80%
	6.6 m/s		+22

23 August, Saturday. day, 22°; night, 20°; clear

24 August, sun

	763 mmHg		79%
	6.3 m/s		+22

24 August, Sunday. day, 22°; night, 20°; clear

25 August, mon

	763 mmHg		80%
	6.2 m/s		+22

25 August, Monday. day, 22°; night, 20°; clear

26 August, tue

	763 mmHg		80%
	6.3 m/s		+22

26 August, Tuesday. day, 22°; night, 20°; clear

27 August, wed

	763 mmHg		81%
	6 m/s		+22

27 August, Wednesday. day, 23°; night, 20°; clear

28 August, thu

	762 mmHg		83%
	6.6 m/s		+22

28 August, Thursday. day, 22°; night, 20°; rain

29 August, fri

	762 mmHg		81%
	6.9 m/s		+22

29 August, Friday. day, 22°; night, 20°; rain

30 August, sat

	762 mmHg		81%
	6.2 m/s		+21

30 August, Saturday. day, 22°; night, 19°; clear

31 August, sun

	763 mmHg		81%
	6.5 m/s		+21

31 August, Sunday. day, 23°; night, 20°; overcast

1 September, mon

	763 mmHg		77%
	6.6 m/s		+21

1 September, Monday. day, 22°; night, 20°; partly cloudy

2 September, tue

	763 mmHg		78%
	6.8 m/s		+21

2 September, Tuesday. day, 21°; night, 19°; partly cloudy

3 September, wed

	762 mmHg		80%
	6.4 m/s		+21

3 September, Wednesday. day, 22°; night, 19°; partly cloudy

4 September, thu

	762 mmHg		81%
	6.1 m/s		+21

4 September, Thursday. day, 22°; night, 19°; clear

5 September, fri

	764 mmHg		78%
	6.5 m/s		+21

5 September, Friday. day, 22°; night, 19°; clear

6 September, sat

	764 mmHg		80%
	7.1 m/s		+21

6 September, Saturday. day, 21°; night, 19°; clear

Average data for 10 years

Block Island August

13

sunny days

9

days with precipitation

6

cloudy days

13 sunny days; 9 days with precipitation; 6 cloudy days;

82

%

air humidity

4.4

m/s

WindS

90

mm of precipitation

(8% of annual average)

+22

°C

Water temperature

air humidity 82%; 90 millimeters of precipitation (8% of annual average); Wind southerly 4.4 Meters per second; Water temperature +22°

Weather graphs for August

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

SW

S

S

S

S

SW

SW

S

SW

SW

S

S

S

S

S

S

S

S

S

S

S

S

SW

S

S

SW

S

S

S

S

S

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

New York
Boston
Philadelphia
Islandia
Colchester
Jamaica
Brooklyn
Brookhaven
Lake George

Cities with similar weather in August

Lisbon
Toronto
Rio de Janeiro
Genoa
Funchal
Playa de las Americas
Montreal
San Remo
Adeje

The weather forecast for August 2025 is based on historical data from the past 10 years.

August in Block Island is the warmest month of the year. In August, the weather in Block Island is typically warm. Average daily high temperature in August is about 23 degrees above zero. On average, Block Island has 13 sunny, 9 rainy, 7 partly cloudy, and 2 cloudy days in August. The rains are usually heavy.

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