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August weather forecast in Southold

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		78%
	5.9 m/s		+23

27 July, Sunday. day, 25°; night, 21°; clear

28 July, mon

	761 mmHg		81%
	5.8 m/s		+23

28 July, Monday. day, 25°; night, 21°; overcast

29 July, tue

	760 mmHg		80%
	5.6 m/s		+24

29 July, Tuesday. day, 25°; night, 21°; rain

30 July, wed

	761 mmHg		77%
	5.6 m/s		+24

30 July, Wednesday. day, 25°; night, 21°; clear

31 July, thu

	762 mmHg		77%
	5.7 m/s		+24

31 July, Thursday. day, 24°; night, 21°; clear

1 August, fri

	762 mmHg		78%
	5.6 m/s		+23

1 August, Friday. day, 25°; night, 21°; rain

2 August, sat

	762 mmHg		78%
	5.7 m/s		+23

2 August, Saturday. day, 25°; night, 21°; clear

3 August, sun

	762 mmHg		78%
	5.7 m/s		+24

3 August, Sunday. day, 25°; night, 22°; clear

4 August, mon

	762 mmHg		82%
	5.8 m/s		+24

4 August, Monday. day, 25°; night, 22°; partly cloudy

5 August, tue

	761 mmHg		79%
	6 m/s		+23

5 August, Tuesday. day, 25°; night, 21°; partly cloudy

6 August, wed

	762 mmHg		76%
	6 m/s		+23

6 August, Wednesday. day, 25°; night, 21°; partly cloudy

7 August, thu

	762 mmHg		76%
	6.2 m/s		+23

7 August, Thursday. day, 24°; night, 21°; overcast

8 August, fri

	761 mmHg		77%
	5.8 m/s		+23

8 August, Friday. day, 25°; night, 21°; rain

9 August, sat

	762 mmHg		76%
	6.1 m/s		+24

9 August, Saturday. day, 25°; night, 21°; clear

10 August, sun

	761 mmHg		78%
	6.1 m/s		+24

10 August, Sunday. day, 25°; night, 21°; rain

11 August, mon

	761 mmHg		79%
	5.7 m/s		+23

11 August, Monday. day, 25°; night, 21°; rain

12 August, tue

	761 mmHg		79%
	5.6 m/s		+23

12 August, Tuesday. day, 24°; night, 21°; overcast

13 August, wed

	761 mmHg		80%
	6 m/s		+24

13 August, Wednesday. day, 24°; night, 21°; rain

14 August, thu

	761 mmHg		78%
	5.5 m/s		+24

14 August, Thursday. day, 25°; night, 21°; partly cloudy

15 August, fri

	762 mmHg		79%
	5.7 m/s		+24

15 August, Friday. day, 24°; night, 21°; rain

16 August, sat

	763 mmHg		81%
	5.3 m/s		+24

16 August, Saturday. day, 24°; night, 20°; partly cloudy

17 August, sun

	762 mmHg		80%
	5.5 m/s		+24

17 August, Sunday. day, 25°; night, 21°; partly cloudy

18 August, mon

	761 mmHg		79%
	5.8 m/s		+24

18 August, Monday. day, 25°; night, 21°; rain

19 August, tue

	761 mmHg		76%
	6 m/s		+24

19 August, Tuesday. day, 24°; night, 20°; rain

20 August, wed

	763 mmHg		76%
	5.7 m/s		+24

20 August, Wednesday. day, 24°; night, 20°; clear

21 August, thu

	763 mmHg		78%
	6.1 m/s		+24

21 August, Thursday. day, 24°; night, 20°; partly cloudy

22 August, fri

	762 mmHg		78%
	6.2 m/s		+23

22 August, Friday. day, 24°; night, 20°; rain

23 August, sat

	762 mmHg		75%
	6 m/s		+23

23 August, Saturday. day, 24°; night, 20°; clear

24 August, sun

	763 mmHg		75%
	5.7 m/s		+24

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

25 August, mon

	763 mmHg		76%
	5.7 m/s		+23

25 August, Monday. day, 24°; night, 20°; clear

26 August, tue

	763 mmHg		76%
	5.7 m/s		+23

26 August, Tuesday. day, 24°; night, 20°; clear

27 August, wed

	763 mmHg		77%
	5.5 m/s		+23

27 August, Wednesday. day, 24°; night, 20°; clear

28 August, thu

	762 mmHg		80%
	6.3 m/s		+23

28 August, Thursday. day, 24°; night, 20°; overcast

29 August, fri

	762 mmHg		78%
	6.2 m/s		+23

29 August, Friday. day, 24°; night, 20°; clear

30 August, sat

	762 mmHg		77%
	5.6 m/s		+23

30 August, Saturday. day, 24°; night, 20°; clear

31 August, sun

	763 mmHg		76%
	5.9 m/s		+23

31 August, Sunday. day, 24°; night, 20°; partly cloudy

1 September, mon

	763 mmHg		73%
	6.2 m/s		+23

1 September, Monday. day, 23°; night, 20°; partly cloudy

2 September, tue

	763 mmHg		74%
	6.3 m/s		+23

2 September, Tuesday. day, 23°; night, 19°; clear

3 September, wed

	762 mmHg		77%
	6.2 m/s		+23

3 September, Wednesday. day, 23°; night, 19°; partly cloudy

4 September, thu

	762 mmHg		77%
	5.6 m/s		+23

4 September, Thursday. day, 24°; night, 19°; clear

5 September, fri

	764 mmHg		74%
	6.1 m/s		+23

5 September, Friday. day, 23°; night, 19°; clear

6 September, sat

	764 mmHg		77%
	6.6 m/s		+23

6 September, Saturday. day, 22°; night, 19°; rain

Average data for 10 years

Southold August

11

sunny days

9

days with precipitation

6

cloudy days

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

78

%

air humidity

4

m/s

WindS

95

mm of precipitation

(8% of annual average)

+23

°C

Water temperature

air humidity 78%; 95 millimeters of precipitation (8% of annual average); Wind southerly 4 Meters per second; Water temperature +23°

Weather graphs for August

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

SW

S

SW

SW

S

SW

S

SW

SW

SW

S

S

S

SW

S

S

S

S

S

S

S

SW

SW

S

SW

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

Toronto
Rio de Janeiro
Genoa
Marseilles
Bali
San Remo
Loanda
Mogadishu
Mombasa

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

In August, the weather in Southold is typically warm. Average daily high temperature in August is about 24 degrees above zero. On average, Southold has 11 sunny, 9 rainy, 8 partly cloudy, and 3 cloudy days in August. The rains are usually heavy.

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