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December weather forecast in Hayward

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

	756 mmHg		57%
	4 m/s		+13

30 November, Sunday. day, 15°; night, 13°; partly cloudy

1 December, mon

	754 mmHg		63%
	4 m/s		+13

1 December, Monday. day, 14°; night, 12°; partly cloudy

2 December, tue

	754 mmHg		68%
	5.8 m/s		+13

2 December, Tuesday. day, 14°; night, 11°; partly cloudy

3 December, wed

	756 mmHg		57%
	3.2 m/s		+13

3 December, Wednesday. day, 14°; night, 11°; partly cloudy

4 December, thu

	756 mmHg		61%
	3.7 m/s		+13

4 December, Thursday. day, 13°; night, 11°; clear

5 December, fri

	757 mmHg		68%
	3.7 m/s		+13

5 December, Friday. day, 13°; night, 12°; rain

6 December, sat

	757 mmHg		67%
	3.4 m/s		+13

6 December, Saturday. day, 12°; night, 10°; clear

7 December, sun

	758 mmHg		63%
	2.9 m/s		+13

7 December, Sunday. day, 12°; night, 11°; clear

8 December, mon

	757 mmHg		67%
	3 m/s		+12

8 December, Monday. day, 13°; night, 11°; clear

9 December, tue

	756 mmHg		62%
	4 m/s		+12

9 December, Tuesday. day, 14°; night, 12°; clear

10 December, wed

	755 mmHg		68%
	4.3 m/s		+13

10 December, Wednesday. day, 14°; night, 12°; partly cloudy

11 December, thu

	755 mmHg		68%
	3.2 m/s		+13

11 December, Thursday. day, 13°; night, 11°; partly cloudy

12 December, fri

	754 mmHg		69%
	3.7 m/s		+13

12 December, Friday. day, 12°; night, 10°; partly cloudy

13 December, sat

	755 mmHg		72%
	3.5 m/s		+12

13 December, Saturday. day, 12°; night, 10°; partly cloudy

14 December, sun

	755 mmHg		72%
	4.8 m/s		+12

14 December, Sunday. day, 12°; night, 10°; overcast

15 December, mon

	754 mmHg		69%
	5 m/s		+12

15 December, Monday. day, 12°; night, 10°; clear

16 December, tue

	754 mmHg		68%
	4.8 m/s		+12

16 December, Tuesday. day, 12°; night, 11°; rain

17 December, wed

	755 mmHg		68%
	3.5 m/s		+12

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

18 December, thu

	754 mmHg		68%
	4.5 m/s		+12

18 December, Thursday. day, 12°; night, 10°; clear

19 December, fri

	756 mmHg		62%
	4.1 m/s		+12

19 December, Friday. day, 12°; night, 10°; clear

20 December, sat

	756 mmHg		68%
	4.5 m/s		+12

20 December, Saturday. day, 13°; night, 11°; partly cloudy

21 December, sun

	755 mmHg		66%
	4.9 m/s		+12

21 December, Sunday. day, 13°; night, 11°; partly cloudy

22 December, mon

	757 mmHg		60%
	4 m/s		+12

22 December, Monday. day, 13°; night, 11°; clear

23 December, tue

	755 mmHg		62%
	5.3 m/s		+12

23 December, Tuesday. day, 12°; night, 10°; clear

24 December, wed

	755 mmHg		61%
	3.9 m/s		+12

24 December, Wednesday. day, 12°; night, 10°; partly cloudy

25 December, thu

	756 mmHg		62%
	4.1 m/s		+12

25 December, Thursday. day, 11°; night, 9°; clear

26 December, fri

	759 mmHg		66%
	3.2 m/s		+12

26 December, Friday. day, 11°; night, 9°; rain

27 December, sat

	758 mmHg		62%
	2.7 m/s		+12

27 December, Saturday. day, 11°; night, 11°; rain

28 December, sun

	757 mmHg		67%
	3.7 m/s		+12

28 December, Sunday. day, 12°; night, 10°; partly cloudy

29 December, mon

	757 mmHg		68%
	4 m/s		+12

29 December, Monday. day, 12°; night, 10°; rain

30 December, tue

	757 mmHg		67%
	3.4 m/s		+12

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

31 December, wed

	757 mmHg		67%
	3.4 m/s		+12

31 December, Wednesday. day, 12°; night, 9°; partly cloudy

1 January, thu

	757 mmHg		63%
	3.5 m/s		+11

1 January, Thursday. day, 11°; night, 9°; clear

2 January, fri

	756 mmHg		67%
	3.2 m/s		+11

2 January, Friday. day, 11°; night, 9°; partly cloudy

3 January, sat

	755 mmHg		67%
	4.1 m/s		+11

3 January, Saturday. day, 12°; night, 10°; partly cloudy

Average data for 10 years

Hayward December

12

sunny days

5

days with precipitation

14

cloudy days

12 sunny days; 5 days with precipitation; 14 cloudy days;

66

%

air humidity

2.7

m/s

WindSE

71

mm of precipitation

(18% of annual average)

+12

°C

Water temperature

air humidity 66%; 71 millimeters of precipitation (18% of annual average); Wind south-easterly 2.7 Meters per second; Water temperature +12°

Weather graphs for December

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

SE

NW

E

SE

SE

NW

SE

E

SE

SE

SE

SW

N

SE

SE

E

S

SW

SE

S

SW

S

S

E

SE

E

SE

E

NE

E

E

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 December

Antalya
Barcelona
Rome
Marmaris
Athens
Lisbon
Heraklion
Nice
Salou

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

December in Hayward is the coldest month of the year. In December, the weather in Hayward is typically warm. Average daily high temperature in December is about 12 degrees above zero. On average, Hayward has 13 partly cloudy, 12 sunny, 5 rainy, and 1 cloudy day in December. The rains are usually light. December as well as January and February is considered the most uncomfortable time to visit Hayward.

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