Annual mean 23°C · wettest around September · prevailing wind NE
Warmest
29.2 °C
Coldest
23.4 °C
Wettest
85%
Windiest
3.6 m/s
Prevailing
NE
3.0 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 San Rafael over the whole year is 23°C. May is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 17°C. The rainy (wet) season in San Rafael runs from May to November, peaking in September with a 58% chance of rain on a given day. The dry season is December to April; February is the driest month, at 25%. Winds in San Rafael are highest in February, averaging 2.5 m/s (9 km/h), and lightest in September, at 1.5 m/s (5 km/h). The prevailing wind is from the NE. The clearest skies in San Rafael come in March, when the sky is typically 49% covered; June is the cloudiest month, at 73%.
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
24°C
17°C
24°C
33%
52%
2.4 m/s
61
37
41
February
25°C
17°C
25°C
25%
52%
2.5 m/s
57
42
36
March
27°C
17°C
27°C
35%
49%
2.3 m/s
49
48
25
April
29°C
19°C
29°C
41%
53%
2.2 m/s
37
50
16
May
29°C
20°C
30°C
50%
64%
1.7 m/s
31
47
10
June
27°C
20°C
29°C
56%
73%
1.6 m/s
36
44
14
July
27°C
20°C
28°C
48%
64%
2.0 m/s
41
44
18
August
28°C
20°C
29°C
55%
66%
1.9 m/s
37
45
15
September
28°C
20°C
30°C
58%
68%
1.5 m/s
33
45
12
October
26°C
19°C
28°C
54%
67%
1.7 m/s
45
42
21
November
25°C
18°C
25°C
42%
64%
2.2 m/s
57
38
34
December
24°C
17°C
24°C
31%
57%
2.3 m/s
61
36
41
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 24°C at their warmest in December, its coolest month, and 29°C in May, its warmest; the coolest hours of the day run from 17°C to 20°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 24°CLow 17°CRain 30%
Winter in San Rafael has typical daily highs of about 24°C and lows of about 17°C, with a 30% chance of rain on a given day.
San Rafael weather in springMarch to May
High 28°CLow 19°CRain 42%
Spring in San Rafael has typical daily highs of about 28°C and lows of about 19°C, with a 42% chance of rain on a given day.
San Rafael weather in summerJune to August
High 27°CLow 20°CRain 53%
Summer in San Rafael has typical daily highs of about 27°C and lows of about 20°C, with a 53% chance of rain on a given day.
San Rafael weather in autumnSeptember to November
High 26°CLow 19°CRain 51%
Autumn in San Rafael has typical daily highs of about 26°C and lows of about 19°C, with a 51% chance of rain on a given day.
When is the rainy season in San Rafael?
The rainy (wet) season in San Rafael runs from May to November, peaking in September with a 58% chance of rain on a given day. The dry season is December to April; February is the driest month, at 25%.
What time of year is San Rafael windiest?
Winds in San Rafael are highest in February, averaging 2.5 m/s (9 km/h), and lightest in September, at 1.5 m/s (5 km/h). The prevailing wind is from the NE.
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 29°C; January is the coldest, with lows of about 17°C.