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August weather forecast in San Francisco

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

	756 mmHg		77%
	4.9 m/s		+15

27 July, Sunday. day, 22°; night, 12°; partly cloudy

28 July, mon

	756 mmHg		76%
	4.9 m/s		+15

28 July, Monday. day, 22°; night, 12°; partly cloudy

29 July, tue

	757 mmHg		77%
	5.1 m/s		+15

29 July, Tuesday. day, 21°; night, 12°; partly cloudy

30 July, wed

	757 mmHg		77%
	5 m/s		+15

30 July, Wednesday. day, 21°; night, 12°; partly cloudy

31 July, thu

	757 mmHg		76%
	5 m/s		+15

31 July, Thursday. day, 22°; night, 12°; partly cloudy

1 August, fri

	757 mmHg		76%
	5 m/s		+15

1 August, Friday. day, 22°; night, 12°; partly cloudy

2 August, sat

	757 mmHg		75%
	5.1 m/s		+15

2 August, Saturday. day, 22°; night, 13°; clear

3 August, sun

	757 mmHg		75%
	5.2 m/s		+15

3 August, Sunday. day, 22°; night, 13°; clear

4 August, mon

	756 mmHg		76%
	5.3 m/s		+15

4 August, Monday. day, 22°; night, 13°; partly cloudy

5 August, tue

	757 mmHg		77%
	5.4 m/s		+15

5 August, Tuesday. day, 22°; night, 13°; partly cloudy

6 August, wed

	757 mmHg		76%
	5.4 m/s		+15

6 August, Wednesday. day, 22°; night, 13°; partly cloudy

7 August, thu

	756 mmHg		75%
	5.3 m/s		+15

7 August, Thursday. day, 22°; night, 13°; clear

8 August, fri

	756 mmHg		76%
	5.1 m/s		+15

8 August, Friday. day, 22°; night, 13°; clear

9 August, sat

	756 mmHg		75%
	5 m/s		+15

9 August, Saturday. day, 23°; night, 13°; partly cloudy

10 August, sun

	756 mmHg		75%
	5.1 m/s		+15

10 August, Sunday. day, 23°; night, 13°; clear

11 August, mon

	756 mmHg		75%
	5.1 m/s		+15

11 August, Monday. day, 23°; night, 13°; clear

12 August, tue

	756 mmHg		75%
	5 m/s		+15

12 August, Tuesday. day, 23°; night, 13°; clear

13 August, wed

	756 mmHg		73%
	5.1 m/s		+15

13 August, Wednesday. day, 23°; night, 13°; clear

14 August, thu

	756 mmHg		73%
	5.2 m/s		+15

14 August, Thursday. day, 23°; night, 13°; partly cloudy

15 August, fri

	756 mmHg		74%
	5.2 m/s		+15

15 August, Friday. day, 23°; night, 13°; clear

16 August, sat

	756 mmHg		73%
	5 m/s		+15

16 August, Saturday. day, 23°; night, 13°; clear

17 August, sun

	756 mmHg		74%
	5.2 m/s		+15

17 August, Sunday. day, 23°; night, 13°; clear

18 August, mon

	756 mmHg		75%
	5.2 m/s		+15

18 August, Monday. day, 22°; night, 13°; partly cloudy

19 August, tue

	756 mmHg		76%
	5.1 m/s		+15

19 August, Tuesday. day, 22°; night, 13°; partly cloudy

20 August, wed

	756 mmHg		77%
	5.1 m/s		+15

20 August, Wednesday. day, 22°; night, 13°; partly cloudy

21 August, thu

	756 mmHg		77%
	5.2 m/s		+15

21 August, Thursday. day, 22°; night, 13°; clear

22 August, fri

	756 mmHg		77%
	5.2 m/s		+15

22 August, Friday. day, 22°; night, 13°; clear

23 August, sat

	756 mmHg		77%
	4.9 m/s		+16

23 August, Saturday. day, 22°; night, 13°; partly cloudy

24 August, sun

	756 mmHg		77%
	4.8 m/s		+16

24 August, Sunday. day, 22°; night, 13°; partly cloudy

25 August, mon

	756 mmHg		76%
	4.8 m/s		+15

25 August, Monday. day, 22°; night, 13°; clear

26 August, tue

	756 mmHg		76%
	4.8 m/s		+16

26 August, Tuesday. day, 23°; night, 13°; clear

27 August, wed

	756 mmHg		73%
	4.69 m/s		+16

27 August, Wednesday. day, 24°; night, 13°; clear

28 August, thu

	755 mmHg		71%
	4.9 m/s		+16

28 August, Thursday. day, 24°; night, 13°; clear

29 August, fri

	755 mmHg		74%
	5 m/s		+15

29 August, Friday. day, 23°; night, 14°; clear

30 August, sat

	755 mmHg		73%
	5 m/s		+15

30 August, Saturday. day, 23°; night, 14°; clear

31 August, sun

	755 mmHg		73%
	5 m/s		+15

31 August, Sunday. day, 24°; night, 13°; clear

1 September, mon

	755 mmHg		72%
	4.8 m/s		+15

1 September, Monday. day, 24°; night, 13°; clear

2 September, tue

	755 mmHg		72%
	4.69 m/s		+15

2 September, Tuesday. day, 24°; night, 13°; clear

3 September, wed

	755 mmHg		71%
	4.9 m/s		+15

3 September, Wednesday. day, 23°; night, 13°; clear

4 September, thu

	756 mmHg		72%
	5.1 m/s		+15

4 September, Thursday. day, 23°; night, 13°; clear

5 September, fri

	756 mmHg		71%
	5 m/s		+15

5 September, Friday. day, 24°; night, 13°; clear

6 September, sat

	756 mmHg		69%
	4.6 m/s		+15

6 September, Saturday. day, 24°; night, 13°; clear

Average data for 10 years

San Francisco August

20

sunny days

0

days with precipitation

11

cloudy days

20 sunny days; 0 days with precipitation; 11 cloudy days;

75

%

air humidity

3.3

m/s

WindW

2

mm of precipitation

(1% of annual average)

+15

°C

Water temperature

air humidity 75%; 2 millimeters of precipitation (1% of annual average); Wind westerly 3.3 Meters per second; Water temperature +15°

Weather graphs for August

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

W

W

W

W

W

W

W

W

SW

SW

W

W

W

W

W

W

W

W

SW

W

W

W

SW

SW

W

W

W

W

W

W

W

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

Sacramento
Oakland
Redding
Monterey
San Jose
Reno
Stanford
San Luis Obispo
Cupertino

Cities with similar weather in August

Tallinn
Stockholm
Oslo
Palanga
Copenhagen
Looe
Klaipeda
Bergen
Lima

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

In August, the weather in San Francisco is typically warm. Average daily high temperature in August is about 23 degrees above zero. On average, San Francisco has 20 sunny and 11 partly cloudy days in August. August as well as June, July, and September is considered the most comfortable time to visit San Francisco.

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