Annual mean 23°C · wettest around September · prevailing wind E
Warmest
30.1 °C
Coldest
21.5 °C
Wettest
66%
Windiest
3.0 m/s
Prevailing
E
2.5 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 San Rafael over the whole year is 23°C. May is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 16°C. The rainy (wet) season in San Rafael runs from June to October, peaking in September with a 59% chance of rain on a given day. The dry season is November to May; February is the driest month, at 33%. Winds in San Rafael are highest in April, averaging 2.3 m/s (8 km/h), and lightest in July, at 1.7 m/s (6 km/h). The prevailing wind is from the E. The clearest skies in San Rafael come in April, when the sky is typically 56% covered; June is the cloudiest month, at 67%.
Month by month San Rafael 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
22°C
16°C
21°C
34%
67%
2.2 m/s
68
26
53
February
24°C
17°C
23°C
33%
57%
2.0 m/s
61
37
42
March
26°C
19°C
27°C
35%
59%
2.2 m/s
48
46
26
April
28°C
20°C
29°C
36%
56%
2.3 m/s
34
47
15
May
30°C
22°C
32°C
39%
57%
1.9 m/s
23
40
7
June
29°C
22°C
32°C
57%
67%
1.9 m/s
28
35
10
July
29°C
22°C
31°C
54%
61%
1.7 m/s
31
35
9
August
29°C
22°C
32°C
57%
60%
1.8 m/s
29
34
9
September
28°C
21°C
31°C
59%
67%
1.7 m/s
32
34
11
October
27°C
20°C
28°C
50%
66%
2.0 m/s
43
40
19
November
24°C
18°C
25°C
38%
62%
2.0 m/s
57
39
34
December
23°C
17°C
23°C
35%
62%
2.0 m/s
63
35
44
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 San Rafael weather by season
Year round, San Rafael has days of about 22°C at their warmest in January, its coolest month, and 30°C in May, its warmest; the coolest hours of the day run from 16°C to 22°C through the year, and the average temperature over the year is 23°C around the clock. Rain is most likely around September and least likely around February. 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.
San Rafael weather in winterDecember to February
High 23°CLow 16°CRain 34%
Winter in San Rafael has typical daily highs of about 23°C and lows of about 16°C, with a 34% chance of rain on a given day.
San Rafael weather in springMarch to May
High 28°CLow 20°CRain 36%
Spring in San Rafael has typical daily highs of about 28°C and lows of about 20°C, with a 36% chance of rain on a given day.
San Rafael weather in summerJune to August
High 29°CLow 22°CRain 56%
Summer in San Rafael has typical daily highs of about 29°C and lows of about 22°C, with a 56% chance of rain on a given day.
San Rafael weather in autumnSeptember to November
High 26°CLow 20°CRain 49%
Autumn in San Rafael has typical daily highs of about 26°C and lows of about 20°C, with a 49% chance of rain on a given day.
When is the rainy season in San Rafael?
The rainy (wet) season in San Rafael runs from June to October, peaking in September with a 59% chance of rain on a given day. The dry season is November to May; February is the driest month, at 33%.
What time of year is San Rafael windiest?
Winds in San Rafael are highest in April, averaging 2.3 m/s (8 km/h), and lightest in July, at 1.7 m/s (6 km/h). The prevailing wind is from the E.
What is the average temperature in San Rafael year round?
The average temperature in San Rafael over the whole year is 23°C. May is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 16°C.