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October 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

28 September, sun

	751 mmHg		82%
	5 m/s		+16

28 September, Sunday. day, 18°; night, 14°; partly cloudy

29 September, mon

	752 mmHg		83%
	5.2 m/s		+16

29 September, Monday. day, 18°; night, 13°; partly cloudy

30 September, tue

	752 mmHg		82%
	4.8 m/s		+16

30 September, Tuesday. day, 18°; night, 13°; partly cloudy

1 October, wed

	752 mmHg		81%
	4.8 m/s		+16

1 October, Wednesday. day, 18°; night, 14°; clear

2 October, thu

	752 mmHg		80%
	4.9 m/s		+16

2 October, Thursday. day, 18°; night, 13°; clear

3 October, fri

	752 mmHg		81%
	5.5 m/s		+15

3 October, Friday. day, 18°; night, 13°; clear

4 October, sat

	752 mmHg		79%
	5.8 m/s		+15

4 October, Saturday. day, 18°; night, 13°; clear

5 October, sun

	752 mmHg		78%
	5 m/s		+16

5 October, Sunday. day, 18°; night, 13°; clear

6 October, mon

	752 mmHg		80%
	4.9 m/s		+16

6 October, Monday. day, 19°; night, 13°; clear

7 October, tue

	752 mmHg		80%
	5.1 m/s		+16

7 October, Tuesday. day, 18°; night, 13°; clear

8 October, wed

	752 mmHg		82%
	5.2 m/s		+16

8 October, Wednesday. day, 18°; night, 13°; clear

9 October, thu

	752 mmHg		82%
	5.5 m/s		+15

9 October, Thursday. day, 17°; night, 13°; clear

10 October, fri

	752 mmHg		81%
	5.3 m/s		+15

10 October, Friday. day, 17°; night, 13°; partly cloudy

11 October, sat

	752 mmHg		81%
	5.5 m/s		+15

11 October, Saturday. day, 17°; night, 13°; partly cloudy

12 October, sun

	753 mmHg		76%
	5.3 m/s		+15

12 October, Sunday. day, 18°; night, 13°; clear

13 October, mon

	753 mmHg		79%
	4.8 m/s		+16

13 October, Monday. day, 18°; night, 13°; clear

14 October, tue

	753 mmHg		80%
	4.69 m/s		+16

14 October, Tuesday. day, 18°; night, 13°; clear

15 October, wed

	753 mmHg		80%
	4.8 m/s		+16

15 October, Wednesday. day, 18°; night, 13°; overcast

16 October, thu

	753 mmHg		78%
	5.1 m/s		+16

16 October, Thursday. day, 18°; night, 13°; partly cloudy

17 October, fri

	753 mmHg		79%
	5.1 m/s		+16

17 October, Friday. day, 18°; night, 13°; partly cloudy

18 October, sat

	753 mmHg		83%
	5 m/s		+15

18 October, Saturday. day, 17°; night, 13°; clear

19 October, sun

	753 mmHg		84%
	4.9 m/s		+15

19 October, Sunday. day, 17°; night, 13°; overcast

20 October, mon

	753 mmHg		84%
	5.1 m/s		+15

20 October, Monday. day, 17°; night, 13°; overcast

21 October, tue

	753 mmHg		82%
	5.1 m/s		+15

21 October, Tuesday. day, 17°; night, 12°; clear

22 October, wed

	753 mmHg		81%
	5 m/s		+16

22 October, Wednesday. day, 17°; night, 13°; partly cloudy

23 October, thu

	753 mmHg		81%
	4.8 m/s		+16

23 October, Thursday. day, 17°; night, 12°; partly cloudy

24 October, fri

	753 mmHg		80%
	5.2 m/s		+16

24 October, Friday. day, 17°; night, 13°; rain

25 October, sat

	753 mmHg		79%
	5.2 m/s		+16

25 October, Saturday. day, 17°; night, 13°; rain

26 October, sun

	754 mmHg		77%
	5.3 m/s		+15

26 October, Sunday. day, 17°; night, 12°; clear

27 October, mon

	753 mmHg		78%
	4.9 m/s		+15

27 October, Monday. day, 17°; night, 12°; partly cloudy

28 October, tue

	754 mmHg		80%
	5.3 m/s		+15

28 October, Tuesday. day, 17°; night, 12°; rain

29 October, wed

	754 mmHg		82%
	4.9 m/s		+15

29 October, Wednesday. day, 16°; night, 12°; clear

30 October, thu

	754 mmHg		82%
	5 m/s		+15

30 October, Thursday. day, 16°; night, 12°; partly cloudy

31 October, fri

	755 mmHg		83%
	4.69 m/s		+15

31 October, Friday. day, 16°; night, 12°; partly cloudy

1 November, sat

	755 mmHg		82%
	4.69 m/s		+15

1 November, Saturday. day, 16°; night, 12°; partly cloudy

Average data for 10 years

Half Moon Bay October

16

sunny days

3

days with precipitation

4

cloudy days

16 sunny days; 3 days with precipitation; 4 cloudy days;

80

%

air humidity

3.1

m/s

WindW

26

mm of precipitation

(5% of annual average)

+15

°C

Water temperature

air humidity 80%; 26 millimeters of precipitation (5% of annual average); Wind westerly 3.1 Meters per second; Water temperature +15°

Weather graphs for October

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

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W

W

W

W

W

W

W

W

W

W

W

W

W

SW

SW

W

W

W

W

W

W

W

SW

SW

W

SW

SW

W

W

SW

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
Redding
Monterey
San Jose
Reno
Stanford
San Luis Obispo

Cities with similar weather in October

Gagra
Suhum
Istanbul
Pitsunda
Rimini
Tivat
Buenos Aires
Capetown
Herceg Novi

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

October in Half Moon Bay is the sunniest month of the year. In October, the weather in Half Moon Bay is typically warm. Average daily high temperature in October is about 17 degrees above zero. On average, Half Moon Bay has 16 sunny, 9 partly cloudy, 3 rainy, and 3 cloudy days in October. The rains are usually moderate.

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