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September weather forecast in Santa Monica

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

31 August, sun

	731 mmHg		52%
	3.4 m/s		+22

31 August, Sunday. day, 32°; night, 19°; clear

1 September, mon

	731 mmHg		54%
	3.4 m/s		+22

1 September, Monday. day, 31°; night, 19°; clear

2 September, tue

	731 mmHg		55%
	3.4 m/s		+22

2 September, Tuesday. day, 31°; night, 19°; clear

3 September, wed

	732 mmHg		56%
	3.4 m/s		+22

3 September, Wednesday. day, 31°; night, 19°; clear

4 September, thu

	731 mmHg		54%
	3.3 m/s		+22

4 September, Thursday. day, 32°; night, 19°; clear

5 September, fri

	731 mmHg		52%
	3.4 m/s		+22

5 September, Friday. day, 32°; night, 19°; clear

6 September, sat

	732 mmHg		52%
	3.4 m/s		+22

6 September, Saturday. day, 32°; night, 19°; clear

7 September, sun

	732 mmHg		52%
	3.5 m/s		+21

7 September, Sunday. day, 32°; night, 19°; clear

8 September, mon

	731 mmHg		55%
	3.4 m/s		+21

8 September, Monday. day, 31°; night, 18°; clear

9 September, tue

	731 mmHg		55%
	3.5 m/s		+21

9 September, Tuesday. day, 30°; night, 18°; clear

10 September, wed

	732 mmHg		57%
	3.4 m/s		+22

10 September, Wednesday. day, 30°; night, 17°; clear

11 September, thu

	732 mmHg		56%
	3.4 m/s		+21

11 September, Thursday. day, 30°; night, 17°; clear

12 September, fri

	732 mmHg		55%
	3.4 m/s		+21

12 September, Friday. day, 30°; night, 17°; clear

13 September, sat

	731 mmHg		55%
	3.4 m/s		+21

13 September, Saturday. day, 30°; night, 17°; clear

14 September, sun

	732 mmHg		56%
	3.3 m/s		+21

14 September, Sunday. day, 29°; night, 17°; clear

15 September, mon

	732 mmHg		57%
	3.3 m/s		+22

15 September, Monday. day, 29°; night, 17°; rain

16 September, tue

	732 mmHg		58%
	3.4 m/s		+22

16 September, Tuesday. day, 29°; night, 17°; clear

17 September, wed

	732 mmHg		58%
	3.2 m/s		+21

17 September, Wednesday. day, 28°; night, 16°; clear

18 September, thu

	732 mmHg		58%
	3.3 m/s		+21

18 September, Thursday. day, 28°; night, 16°; clear

19 September, fri

	731 mmHg		58%
	3.4 m/s		+21

19 September, Friday. day, 28°; night, 16°; clear

20 September, sat

	731 mmHg		60%
	3.4 m/s		+21

20 September, Saturday. day, 28°; night, 16°; clear

21 September, sun

	732 mmHg		60%
	3.5 m/s		+21

21 September, Sunday. day, 28°; night, 16°; clear

22 September, mon

	732 mmHg		58%
	3.4 m/s		+22

22 September, Monday. day, 28°; night, 16°; partly cloudy

23 September, tue

	732 mmHg		54%
	3.3 m/s		+22

23 September, Tuesday. day, 29°; night, 15°; clear

24 September, wed

	732 mmHg		52%
	3.2 m/s		+22

24 September, Wednesday. day, 30°; night, 16°; clear

25 September, thu

	732 mmHg		52%
	3.2 m/s		+22

25 September, Thursday. day, 30°; night, 16°; clear

26 September, fri

	732 mmHg		55%
	3.2 m/s		+22

26 September, Friday. day, 29°; night, 16°; clear

27 September, sat

	732 mmHg		56%
	3.1 m/s		+21

27 September, Saturday. day, 29°; night, 16°; clear

28 September, sun

	732 mmHg		56%
	3.3 m/s		+21

28 September, Sunday. day, 29°; night, 16°; partly cloudy

29 September, mon

	732 mmHg		55%
	3.3 m/s		+21

29 September, Monday. day, 28°; night, 16°; partly cloudy

30 September, tue

	732 mmHg		51%
	3.2 m/s		+22

30 September, Tuesday. day, 29°; night, 15°; clear

1 October, wed

	732 mmHg		51%
	3.2 m/s		+22

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

2 October, thu

	732 mmHg		54%
	3.3 m/s		+21

2 October, Thursday. day, 28°; night, 15°; clear

3 October, fri

	732 mmHg		56%
	3.4 m/s		+20

3 October, Friday. day, 27°; night, 15°; clear

4 October, sat

	732 mmHg		58%
	3.5 m/s		+20

4 October, Saturday. day, 27°; night, 14°; clear

Average data for 10 years

Santa Monica September

26

sunny days

1

day with precipitation

3

cloudy days

26 sunny days; 1 day with precipitation; 3 cloudy days;

55

%

air humidity

1.6

m/s

WindSE

6

mm of precipitation

(2% of annual average)

+22

°C

Water temperature

air humidity 55%; 6 millimeters of precipitation (2% of annual average); Wind south-easterly 1.6 Meters per second; Water temperature +22°

Weather graphs for September

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

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SE

SE

SE

1

Average data for 10 years

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30

Daytime temperature

Night-time temperature

Cities near you

Los Angeles
Las Vegas
San Diego
Beverly Hills
Mexicali
Santa Barbara
Glendale
San Luis Obispo
Irvine

Cities with similar weather in September

Barcelona
Rome
Heraklion
Nice
Salou
Malaga
Rio de Janeiro
Pisa
Hersonisos

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

In September, the weather in Santa Monica is typically hot. Average daily high temperature in September is about 30 degrees above zero. On average, Santa Monica has 26 sunny, 3 partly cloudy, and 1 rainy day in September. The rains are usually light.

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