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August weather forecast in Half Moon Bay

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

	752 mmHg		85%
	4.8 m/s		+16

27 July, Sunday. day, 17°; night, 13°; overcast

28 July, mon

	752 mmHg		85%
	5 m/s		+16

28 July, Monday. day, 17°; night, 13°; partly cloudy

29 July, tue

	752 mmHg		86%
	5.1 m/s		+16

29 July, Tuesday. day, 17°; night, 13°; overcast

30 July, wed

	752 mmHg		86%
	5 m/s		+16

30 July, Wednesday. day, 17°; night, 13°; overcast

31 July, thu

	752 mmHg		86%
	5.2 m/s		+16

31 July, Thursday. day, 17°; night, 13°; partly cloudy

1 August, fri

	752 mmHg		86%
	5.1 m/s		+16

1 August, Friday. day, 17°; night, 13°; partly cloudy

2 August, sat

	753 mmHg		86%
	5.2 m/s		+16

2 August, Saturday. day, 17°; night, 13°; partly cloudy

3 August, sun

	752 mmHg		86%
	5.3 m/s		+16

3 August, Sunday. day, 17°; night, 13°; partly cloudy

4 August, mon

	752 mmHg		86%
	5.2 m/s		+16

4 August, Monday. day, 17°; night, 13°; overcast

5 August, tue

	752 mmHg		87%
	5.3 m/s		+16

5 August, Tuesday. day, 17°; night, 13°; overcast

6 August, wed

	752 mmHg		86%
	5.5 m/s		+16

6 August, Wednesday. day, 17°; night, 13°; overcast

7 August, thu

	752 mmHg		86%
	5.4 m/s		+16

7 August, Thursday. day, 17°; night, 13°; partly cloudy

8 August, fri

	752 mmHg		86%
	5.2 m/s		+16

8 August, Friday. day, 18°; night, 13°; partly cloudy

9 August, sat

	752 mmHg		86%
	5.1 m/s		+16

9 August, Saturday. day, 18°; night, 13°; overcast

10 August, sun

	752 mmHg		85%
	5.1 m/s		+16

10 August, Sunday. day, 18°; night, 13°; partly cloudy

11 August, mon

	752 mmHg		86%
	5.1 m/s		+16

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

12 August, tue

	752 mmHg		85%
	5.1 m/s		+16

12 August, Tuesday. day, 18°; night, 13°; partly cloudy

13 August, wed

	752 mmHg		85%
	5.2 m/s		+16

13 August, Wednesday. day, 18°; night, 13°; clear

14 August, thu

	752 mmHg		85%
	5.3 m/s		+16

14 August, Thursday. day, 18°; night, 13°; partly cloudy

15 August, fri

	752 mmHg		85%
	5.3 m/s		+16

15 August, Friday. day, 18°; night, 13°; partly cloudy

16 August, sat

	751 mmHg		85%
	5.3 m/s		+16

16 August, Saturday. day, 18°; night, 13°; clear

17 August, sun

	752 mmHg		85%
	5.4 m/s		+17

17 August, Sunday. day, 18°; night, 13°; clear

18 August, mon

	751 mmHg		85%
	5.3 m/s		+17

18 August, Monday. day, 17°; night, 13°; partly cloudy

19 August, tue

	751 mmHg		86%
	5.1 m/s		+16

19 August, Tuesday. day, 17°; night, 13°; partly cloudy

20 August, wed

	751 mmHg		85%
	5 m/s		+17

20 August, Wednesday. day, 17°; night, 13°; partly cloudy

21 August, thu

	752 mmHg		86%
	5.2 m/s		+17

21 August, Thursday. day, 17°; night, 14°; partly cloudy

22 August, fri

	752 mmHg		86%
	5.3 m/s		+17

22 August, Friday. day, 18°; night, 14°; partly cloudy

23 August, sat

	751 mmHg		86%
	4.9 m/s		+17

23 August, Saturday. day, 18°; night, 14°; partly cloudy

24 August, sun

	751 mmHg		85%
	4.8 m/s		+17

24 August, Sunday. day, 18°; night, 14°; partly cloudy

25 August, mon

	751 mmHg		85%
	4.8 m/s		+17

25 August, Monday. day, 18°; night, 14°; clear

26 August, tue

	751 mmHg		85%
	4.9 m/s		+17

26 August, Tuesday. day, 18°; night, 13°; clear

27 August, wed

	751 mmHg		85%
	5 m/s		+17

27 August, Wednesday. day, 18°; night, 13°; clear

28 August, thu

	751 mmHg		84%
	5.1 m/s		+17

28 August, Thursday. day, 19°; night, 14°; clear

29 August, fri

	751 mmHg		85%
	5.1 m/s		+17

29 August, Friday. day, 18°; night, 14°; clear

30 August, sat

	751 mmHg		85%
	5.4 m/s		+17

30 August, Saturday. day, 18°; night, 14°; clear

31 August, sun

	751 mmHg		85%
	5.3 m/s		+17

31 August, Sunday. day, 18°; night, 14°; clear

1 September, mon

	750 mmHg		84%
	5.1 m/s		+17

1 September, Monday. day, 19°; night, 14°; partly cloudy

2 September, tue

	750 mmHg		83%
	4.8 m/s		+17

2 September, Tuesday. day, 19°; night, 14°; clear

3 September, wed

	751 mmHg		83%
	4.9 m/s		+17

3 September, Wednesday. day, 19°; night, 14°; partly cloudy

4 September, thu

	751 mmHg		84%
	5.4 m/s		+17

4 September, Thursday. day, 18°; night, 14°; clear

5 September, fri

	751 mmHg		83%
	5.3 m/s		+17

5 September, Friday. day, 19°; night, 14°; clear

6 September, sat

	751 mmHg		82%
	5 m/s		+17

6 September, Saturday. day, 19°; night, 14°; clear

Average data for 10 years

Half Moon Bay August

10

sunny days

0

days with precipitation

4

cloudy days

10 sunny days; 0 days with precipitation; 4 cloudy days;

85

%

air humidity

3.3

m/s

WindW

4

mm of precipitation

(1% of annual average)

+16

°C

Water temperature

air humidity 85%; 4 millimeters of precipitation (1% of annual average); Wind westerly 3.3 Meters per second; Water temperature +16°

Weather graphs for August

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

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

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

San Francisco
Sacramento
Oakland
Monterey
Redding
Reno
San Jose
Santa Cruz
Fremont

Cities with similar weather in August

Tallinn
Cholpon-Ata
Sydney
Oslo
Palanga
Dublin
Capetown
Looe
Edinburgh

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

In August, the weather in Half Moon Bay is typically warm. Average daily high temperature in August is about 18 degrees above zero. On average, Half Moon Bay has 17 partly cloudy, 10 sunny, and 4 cloudy days in August. August as well as September is considered the most comfortable time to visit Half Moon Bay.

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