Annual mean 15°C · wettest around March · prevailing wind NW
Warmest
23.8 °C
Coldest
12.4 °C
Wettest
30%
Windiest
5.2 m/s
Prevailing
NW
4.0 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Hayward over the whole year is 15°C. August is the hottest month, with highs of about 23°C; February is the coldest, with lows of about 8°C. The rainy (wet) season in Hayward runs from November to April, peaking in March with a 33% chance of rain on a given day. The dry season is May to October; June is the driest month, at 7%. Winds in Hayward are highest in June, averaging 4.1 m/s (15 km/h), and lightest in November, at 2.1 m/s (8 km/h). The prevailing wind is from the NW. The clearest skies in Hayward come in June, when the sky is typically 26% covered; January is the cloudiest month, at 49%.
Month by month Hayward climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
13°C
8°C
10°C
31%
49%
2.5 m/s
13
0
79
February
14°C
8°C
11°C
30%
36%
2.9 m/s
23
0
76
March
15°C
9°C
12°C
33%
46%
3.2 m/s
27
0
80
April
18°C
10°C
15°C
24%
36%
3.5 m/s
50
3
83
May
20°C
13°C
17°C
19%
36%
3.9 m/s
62
8
80
June
22°C
15°C
20°C
7%
26%
4.1 m/s
71
20
68
July
22°C
15°C
21°C
10%
29%
4.0 m/s
76
26
62
August
23°C
16°C
22°C
10%
31%
3.6 m/s
80
29
58
September
23°C
15°C
21°C
11%
29%
3.1 m/s
78
25
62
October
21°C
13°C
19°C
19%
27%
2.5 m/s
77
14
75
November
16°C
9°C
14°C
24%
33%
2.1 m/s
44
1
87
December
13°C
8°C
11°C
30%
42%
2.2 m/s
13
0
79
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Hayward weather by season
Year round, Hayward has days of about 13°C at their warmest in January, its coolest month, and 23°C in August, its warmest; the coolest hours of the day run from 8°C to 16°C through the year, and the average temperature over the year is 15°C around the clock. Rain is most likely around March and least likely around June. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Hayward weather in winterDecember to February
High 13°CLow 8°CRain 31%
Winter in Hayward has typical daily highs of about 13°C and lows of about 8°C, with a 31% chance of rain on a given day.
Hayward weather in springMarch to May
High 17°CLow 11°CRain 25%
Spring in Hayward has typical daily highs of about 17°C and lows of about 11°C, with a 25% chance of rain on a given day.
Hayward weather in summerJune to August
High 22°CLow 15°CRain 9%
Summer in Hayward has typical daily highs of about 22°C and lows of about 15°C, with a 9% chance of rain on a given day.
Hayward weather in autumnSeptember to November
High 20°CLow 12°CRain 18%
Autumn in Hayward has typical daily highs of about 20°C and lows of about 12°C, with a 18% chance of rain on a given day.
When is the rainy season in Hayward?
The rainy (wet) season in Hayward runs from November to April, peaking in March with a 33% chance of rain on a given day. The dry season is May to October; June is the driest month, at 7%.
What time of year is Hayward windiest?
Winds in Hayward are highest in June, averaging 4.1 m/s (15 km/h), and lightest in November, at 2.1 m/s (8 km/h). The prevailing wind is from the NW.
What is the average temperature in Hayward year round?
The average temperature in Hayward over the whole year is 15°C. August is the hottest month, with highs of about 23°C; February is the coldest, with lows of about 8°C.