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December weather forecast in San Diego

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

30 November, sun

	763 mmHg		73%
	4.6 m/s		+17

30 November, Sunday. day, 17°; night, 12°; partly cloudy

1 December, mon

	763 mmHg		75%
	4.3 m/s		+17

1 December, Monday. day, 17°; night, 12°; clear

2 December, tue

	763 mmHg		75%
	4.1 m/s		+17

2 December, Tuesday. day, 17°; night, 12°; clear

3 December, wed

	763 mmHg		74%
	4.3 m/s		+17

3 December, Wednesday. day, 17°; night, 12°; partly cloudy

4 December, thu

	763 mmHg		73%
	4.5 m/s		+17

4 December, Thursday. day, 17°; night, 12°; clear

5 December, fri

	763 mmHg		74%
	4.4 m/s		+17

5 December, Friday. day, 17°; night, 12°; partly cloudy

6 December, sat

	763 mmHg		75%
	4.8 m/s		+17

6 December, Saturday. day, 17°; night, 12°; partly cloudy

7 December, sun

	763 mmHg		75%
	4.8 m/s		+17

7 December, Sunday. day, 17°; night, 12°; rain

8 December, mon

	763 mmHg		73%
	4.8 m/s		+17

8 December, Monday. day, 17°; night, 12°; clear

9 December, tue

	764 mmHg		74%
	4.5 m/s		+17

9 December, Tuesday. day, 17°; night, 12°; partly cloudy

10 December, wed

	764 mmHg		71%
	4.5 m/s		+17

10 December, Wednesday. day, 17°; night, 12°; clear

11 December, thu

	763 mmHg		73%
	4.9 m/s		+17

11 December, Thursday. day, 17°; night, 12°; overcast

12 December, fri

	763 mmHg		75%
	4.9 m/s		+17

12 December, Friday. day, 16°; night, 12°; clear

13 December, sat

	764 mmHg		76%
	4.6 m/s		+17

13 December, Saturday. day, 16°; night, 11°; clear

14 December, sun

	764 mmHg		77%
	4.9 m/s		+16

14 December, Sunday. day, 16°; night, 11°; partly cloudy

15 December, mon

	764 mmHg		73%
	4.8 m/s		+16

15 December, Monday. day, 16°; night, 11°; partly cloudy

16 December, tue

	763 mmHg		69%
	4.8 m/s		+16

16 December, Tuesday. day, 17°; night, 11°; clear

17 December, wed

	763 mmHg		69%
	4.8 m/s		+16

17 December, Wednesday. day, 17°; night, 11°; partly cloudy

18 December, thu

	763 mmHg		69%
	4.69 m/s		+16

18 December, Thursday. day, 17°; night, 11°; clear

19 December, fri

	764 mmHg		70%
	4.6 m/s		+16

19 December, Friday. day, 17°; night, 11°; clear

20 December, sat

	763 mmHg		73%
	4.5 m/s		+16

20 December, Saturday. day, 17°; night, 11°; clear

21 December, sun

	763 mmHg		75%
	4.6 m/s		+16

21 December, Sunday. day, 16°; night, 11°; rain

22 December, mon

	762 mmHg		76%
	5.2 m/s		+16

22 December, Monday. day, 16°; night, 11°; rain

23 December, tue

	763 mmHg		73%
	4.69 m/s		+16

23 December, Tuesday. day, 16°; night, 11°; rain

24 December, wed

	764 mmHg		72%
	4.69 m/s		+16

24 December, Wednesday. day, 16°; night, 11°; clear

25 December, thu

	763 mmHg		71%
	4.9 m/s		+16

25 December, Thursday. day, 17°; night, 11°; clear

26 December, fri

	764 mmHg		69%
	5 m/s		+16

26 December, Friday. day, 16°; night, 11°; clear

27 December, sat

	764 mmHg		70%
	4.69 m/s		+16

27 December, Saturday. day, 16°; night, 10°; clear

28 December, sun

	764 mmHg		71%
	4.9 m/s		+16

28 December, Sunday. day, 16°; night, 11°; clear

29 December, mon

	763 mmHg		74%
	4.8 m/s		+16

29 December, Monday. day, 16°; night, 11°; rain

30 December, tue

	763 mmHg		75%
	4.3 m/s		+16

30 December, Tuesday. day, 16°; night, 11°; clear

31 December, wed

	762 mmHg		78%
	4.19 m/s		+16

31 December, Wednesday. day, 15°; night, 11°; rain

1 January, thu

	763 mmHg		73%
	4.69 m/s		+15

1 January, Thursday. day, 16°; night, 11°; partly cloudy

2 January, fri

	763 mmHg		71%
	4.5 m/s		+15

2 January, Friday. day, 16°; night, 11°; clear

3 January, sat

	764 mmHg		73%
	4.69 m/s		+15

3 January, Saturday. day, 16°; night, 11°; rain

Average data for 10 years

San Diego December

17

sunny days

6

days with precipitation

4

cloudy days

17 sunny days; 6 days with precipitation; 4 cloudy days;

73

%

air humidity

2.6

m/s

WindS

43

mm of precipitation

(17% of annual average)

+16

°C

Water temperature

air humidity 73%; 43 millimeters of precipitation (17% of annual average); Wind southerly 2.6 Meters per second; Water temperature +16°

Weather graphs for December

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

SW

SW

S

SW

S

S

S

S

S

S

S

S

S

SW

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

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

Los Angeles
Las Vegas
Yuma
Santa Monica
Beverly Hills
Mexicali
Santa Barbara
Glendale
Irvine

Cities with similar weather in December

Alanya
Side
Ayia Napa
Larnaca
Tel Aviv
Paphos
Jerba
Limassol
Rhodes

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

In December, the weather in San Diego is typically warm. Average daily high temperature in December is about 17 degrees above zero. On average, San Diego has 17 sunny, 7 partly cloudy, 6 rainy, and 1 cloudy day in December. The rains are usually moderate. December as well as January, February, and March is considered the most uncomfortable time to visit San Diego.

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