Annual mean 18°C · wettest around January · prevailing wind W
Warmest
32.9 °C
Coldest
16.4 °C
Wettest
29%
Windiest
3.9 m/s
Prevailing
W
3.1 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Riverside over the whole year is 18°C. August is the hottest month, with highs of about 32°C; January is the coldest, with lows of about 8°C. The rainy (wet) season in Riverside runs from October to April, peaking in January with a 26% chance of rain on a given day. The dry season is May to September; July is the driest month, at 9%. Winds in Riverside are highest in May, averaging 2.8 m/s (10 km/h), and lightest in December, at 1.7 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Riverside come in August, when the sky is typically 16% covered; March is the cloudiest month, at 41%.
Month by month Riverside 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
17°C
8°C
14°C
26%
33%
2.0 m/s
47
1
85
February
18°C
8°C
15°C
24%
32%
2.2 m/s
51
4
80
March
19°C
9°C
15°C
25%
41%
2.4 m/s
55
7
80
April
22°C
11°C
19°C
18%
36%
2.6 m/s
74
18
72
May
23°C
14°C
21°C
16%
41%
2.8 m/s
79
23
67
June
28°C
17°C
26°C
10%
28%
2.8 m/s
59
53
32
July
32°C
20°C
30°C
9%
17%
2.8 m/s
25
67
7
August
32°C
20°C
31°C
14%
16%
2.6 m/s
22
66
6
September
30°C
18°C
28°C
13%
24%
2.3 m/s
46
57
19
October
27°C
14°C
24°C
18%
23%
2.1 m/s
67
44
42
November
22°C
10°C
19°C
20%
23%
1.9 m/s
77
16
72
December
18°C
8°C
15°C
25%
30%
1.7 m/s
55
2
86
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 Riverside weather by season
Year round, Riverside has days of about 17°C at their warmest in January, its coolest month, and 32°C in August, its warmest; the coolest hours of the day run from 8°C to 20°C through the year, and the average temperature over the year is 18°C around the clock. Rain is most likely around January and least likely around July. 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.
Riverside weather in winterDecember to February
High 18°CLow 8°CRain 25%
Winter in Riverside has typical daily highs of about 18°C and lows of about 8°C, with a 25% chance of rain on a given day.
Riverside weather in springMarch to May
High 21°CLow 12°CRain 20%
Spring in Riverside has typical daily highs of about 21°C and lows of about 12°C, with a 20% chance of rain on a given day.
Riverside weather in summerJune to August
High 31°CLow 19°CRain 11%
Summer in Riverside has typical daily highs of about 31°C and lows of about 19°C, with a 11% chance of rain on a given day.
Riverside weather in autumnSeptember to November
High 26°CLow 14°CRain 17%
Autumn in Riverside has typical daily highs of about 26°C and lows of about 14°C, with a 17% chance of rain on a given day.
When is the rainy season in Riverside?
The rainy (wet) season in Riverside runs from October to April, peaking in January with a 26% chance of rain on a given day. The dry season is May to September; July is the driest month, at 9%.
What time of year is Riverside windiest?
Winds in Riverside are highest in May, averaging 2.8 m/s (10 km/h), and lightest in December, at 1.7 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Riverside year round?
The average temperature in Riverside over the whole year is 18°C. August is the hottest month, with highs of about 32°C; January is the coldest, with lows of about 8°C.