Annual mean 17°C · wettest around January · prevailing wind SE
Warmest
28.2 °C
Coldest
13.0 °C
Wettest
79%
Windiest
5.3 m/s
Prevailing
SE
4.7 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 José over the whole year is 17°C. January is the hottest month, with highs of about 28°C; July is the coldest, with lows of about 7°C. San José has no sharply defined rainy season: the chance of rain on a given day runs from 28% in July, the driest month, to 50% in January, the wettest. Winds in San José are highest in November, averaging 4.0 m/s (14 km/h), and lightest in April, at 3.4 m/s (12 km/h). The prevailing wind is from the SE. The clearest skies in San José come in January, when the sky is typically 38% covered; July is the cloudiest month, at 52%.
Month by month San José 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
28°C
20°C
27°C
50%
38%
3.8 m/s
47
56
17
February
27°C
19°C
27°C
45%
43%
3.7 m/s
47
50
22
March
25°C
17°C
24°C
49%
42%
3.5 m/s
60
38
36
April
21°C
14°C
19°C
50%
48%
3.4 m/s
74
13
64
May
17°C
10°C
15°C
41%
49%
3.4 m/s
46
3
75
June
14°C
8°C
11°C
32%
50%
3.4 m/s
23
0
70
July
14°C
7°C
10°C
28%
52%
3.5 m/s
18
0
63
August
15°C
8°C
11°C
40%
49%
3.7 m/s
24
2
68
September
17°C
10°C
14°C
35%
51%
3.7 m/s
43
2
76
October
20°C
12°C
17°C
38%
42%
3.8 m/s
58
11
68
November
24°C
16°C
22°C
49%
38%
4.0 m/s
69
26
50
December
26°C
18°C
24°C
46%
40%
3.9 m/s
61
39
36
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 José weather by season
Year round, San José has days of about 14°C at their warmest in July, its coolest month, and 28°C in January, its warmest; the coolest hours of the day run from 7°C to 20°C through the year, and the average temperature over the year is 17°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.
San José weather in winterJune to August
High 14°CLow 8°CRain 33%
Winter in San José has typical daily highs of about 14°C and lows of about 8°C, with a 33% chance of rain on a given day.
San José weather in springSeptember to November
High 21°CLow 13°CRain 41%
Spring in San José has typical daily highs of about 21°C and lows of about 13°C, with a 41% chance of rain on a given day.
San José weather in summerDecember to February
High 27°CLow 19°CRain 47%
Summer in San José has typical daily highs of about 27°C and lows of about 19°C, with a 47% chance of rain on a given day.
San José weather in autumnMarch to May
High 21°CLow 14°CRain 46%
Autumn in San José has typical daily highs of about 21°C and lows of about 14°C, with a 46% chance of rain on a given day.
When is the rainy season in San José?
San José has no sharply defined rainy season: the chance of rain on a given day runs from 28% in July, the driest month, to 50% in January, the wettest.
What time of year is San José windiest?
Winds in San José are highest in November, averaging 4.0 m/s (14 km/h), and lightest in April, at 3.4 m/s (12 km/h). The prevailing wind is from the SE.
What is the average temperature in San José year round?
The average temperature in San José over the whole year is 17°C. January is the hottest month, with highs of about 28°C; July is the coldest, with lows of about 7°C.