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September weather forecast in Chula Vista

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

	758 mmHg		80%
	4.69 m/s		+22

31 August, Sunday. day, 24°; night, 19°; clear

1 September, mon

	757 mmHg		80%
	4.8 m/s		+22

1 September, Monday. day, 24°; night, 19°; clear

2 September, tue

	758 mmHg		79%
	4.9 m/s		+22

2 September, Tuesday. day, 24°; night, 19°; clear

3 September, wed

	758 mmHg		79%
	5.3 m/s		+22

3 September, Wednesday. day, 24°; night, 19°; clear

4 September, thu

	758 mmHg		79%
	5.4 m/s		+21

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

5 September, fri

	758 mmHg		79%
	5 m/s		+21

5 September, Friday. day, 24°; night, 19°; clear

6 September, sat

	758 mmHg		78%
	4.9 m/s		+21

6 September, Saturday. day, 24°; night, 19°; clear

7 September, sun

	758 mmHg		80%
	5.1 m/s		+21

7 September, Sunday. day, 24°; night, 19°; clear

8 September, mon

	758 mmHg		79%
	5.3 m/s		+21

8 September, Monday. day, 24°; night, 19°; clear

9 September, tue

	758 mmHg		79%
	5.4 m/s		+21

9 September, Tuesday. day, 23°; night, 19°; partly cloudy

10 September, wed

	758 mmHg		78%
	5.3 m/s		+21

10 September, Wednesday. day, 23°; night, 19°; clear

11 September, thu

	759 mmHg		79%
	5 m/s		+21

11 September, Thursday. day, 23°; night, 19°; clear

12 September, fri

	759 mmHg		80%
	5.3 m/s		+21

12 September, Friday. day, 23°; night, 18°; clear

13 September, sat

	758 mmHg		80%
	5.1 m/s		+21

13 September, Saturday. day, 23°; night, 18°; clear

14 September, sun

	758 mmHg		79%
	4.9 m/s		+21

14 September, Sunday. day, 23°; night, 18°; clear

15 September, mon

	759 mmHg		79%
	5.1 m/s		+21

15 September, Monday. day, 23°; night, 18°; partly cloudy

16 September, tue

	759 mmHg		79%
	4.8 m/s		+21

16 September, Tuesday. day, 22°; night, 18°; partly cloudy

17 September, wed

	759 mmHg		79%
	4.69 m/s		+21

17 September, Wednesday. day, 22°; night, 18°; clear

18 September, thu

	758 mmHg		79%
	4.8 m/s		+21

18 September, Thursday. day, 22°; night, 18°; clear

19 September, fri

	758 mmHg		79%
	4.9 m/s		+21

19 September, Friday. day, 22°; night, 18°; clear

20 September, sat

	758 mmHg		78%
	5 m/s		+21

20 September, Saturday. day, 22°; night, 18°; rain

21 September, sun

	759 mmHg		79%
	5.1 m/s		+21

21 September, Sunday. day, 22°; night, 18°; clear

22 September, mon

	759 mmHg		79%
	5.3 m/s		+21

22 September, Monday. day, 23°; night, 18°; partly cloudy

23 September, tue

	759 mmHg		78%
	5.2 m/s		+21

23 September, Tuesday. day, 23°; night, 18°; partly cloudy

24 September, wed

	759 mmHg		78%
	5.3 m/s		+21

24 September, Wednesday. day, 23°; night, 18°; clear

25 September, thu

	759 mmHg		80%
	5.3 m/s		+21

25 September, Thursday. day, 23°; night, 18°; clear

26 September, fri

	759 mmHg		80%
	5.1 m/s		+21

26 September, Friday. day, 22°; night, 18°; partly cloudy

27 September, sat

	759 mmHg		80%
	4.69 m/s		+21

27 September, Saturday. day, 22°; night, 18°; partly cloudy

28 September, sun

	759 mmHg		80%
	4.8 m/s		+21

28 September, Sunday. day, 22°; night, 18°; partly cloudy

29 September, mon

	759 mmHg		78%
	4.9 m/s		+21

29 September, Monday. day, 23°; night, 18°; partly cloudy

30 September, tue

	759 mmHg		77%
	4.69 m/s		+21

30 September, Tuesday. day, 23°; night, 18°; clear

1 October, wed

	759 mmHg		77%
	4.8 m/s		+21

1 October, Wednesday. day, 23°; night, 18°; clear

2 October, thu

	759 mmHg		77%
	4.9 m/s		+21

2 October, Thursday. day, 23°; night, 18°; clear

3 October, fri

	759 mmHg		77%
	4.69 m/s		+21

3 October, Friday. day, 22°; night, 17°; clear

4 October, sat

	759 mmHg		77%
	5.2 m/s		+20

4 October, Saturday. day, 22°; night, 17°; partly cloudy

Average data for 10 years

Chula Vista September

20

sunny days

1

day with precipitation

9

cloudy days

20 sunny days; 1 day with precipitation; 9 cloudy days;

79

%

air humidity

2.9

m/s

WindW

5

mm of precipitation

(2% of annual average)

+21

°C

Water temperature

air humidity 79%; 5 millimeters of precipitation (2% of annual average); Wind westerly 2.9 Meters per second; Water temperature +21°

Weather graphs for September

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

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

Daytime temperature

Night-time temperature

Cities near you

Los Angeles
San Diego
Yuma
Santa Monica
Beverly Hills
Mexicali
Santa Barbara
Glendale
Irvine

Cities with similar weather in September

Barcelona
Rome
Heraklion
Salou
Malaga
Alicante
Naples
Palermo
Rio de Janeiro

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

In September, the weather in Chula Vista is typically warm. Average daily high temperature in September is about 23 degrees above zero. On average, Chula Vista has 20 sunny, 9 partly cloudy, and 1 rainy day in September. The rains are usually light. September as well as July and August is considered the most comfortable time to visit Chula Vista.

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