In general the best time to visit San Jose is probably June, July, August, September, when the weather is usually great. The hottest months are July, August, September, while the coldest months are January, February, December.
But ultimately the best time to visit depends on what you want to do:
The best time for a sunbathing holiday is July, August, September. Average maximum temperatures are up to +28°C in August and it has 15 sunny days on average.
In general, it’s pleasant to walk and do outdoor activities during March - November.
If you want to avoid wet weather, then your choice is January, February, December with the lowest chance of rain.
Average weather in San Jose in different months
This is the average weather in San Jose for each month based on historic data:
In June, July, August, September the weather is great. There are an average of 17 sunny days in July and the temperature ranges from +15°C to +28°C.
February, March, April, May, October, November usually has good weather. Average maximum temperature reaches +24°C during October.
In January, December the weather is average. Expect around 26 rainy days, and the precipitation amounts to approximately 119 mm in January.
Climate in San Jose
Here is the detailed breakdown of the climate in San Jose for each month:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Maximum Temperature
+25°C
+27°C
+30°C
+34°C
+37°C
+40°C
+41°C
+40°C
+43°C
+39°C
+30°C
+24°C
Average Maximum Temperature
+15°C
+17°C
+18°C
+20°C
+23°C
+26°C
+28°C
+28°C
+27°C
+24°C
+18°C
+15°C
Minimum Temperature
-1°C
-2°C
+2°C
+3°C
+5°C
+6°C
+9°C
+10°C
+9°C
+5°C
+1°C
-5°C
Avg. water temperature
-
-
-
-
-
-
-
-
-
-
-
-
Humidity, %
75
72
70
67
65
63
64
66
64
64
70
73
Rain, mm
119
125
112
53
47
9
29
10
6
28
64
108
Snow, mm
0
0
0
0
0
0
0
0
0
0
0
0
Average wind speed, m/s
1
2
2
2
2
2
2
2
2
1
1
2
Sunny Days
6
6
6
7
10
15
17
15
14
13
8
6
Cloud Days
12
11
12
14
16
13
13
15
14
13
13
12
Rainy Days
13
12
13
9
5
2
1
1
2
5
9
13
Snowy Days
0
0
0
0
0
0
0
0
0
0
0
0
Average Temperature
Here are the average maximum and minimum temperatures in San Jose during the whole year:
The hottest month in San Jose is August with average maximum temperature going up to +28°C. The coldest month is January with the lowest temperatures of +6°C.
Humidity
The temperature feels different depending on humidity. Here is how humidity in San Jose looks throughout the year, in %:
The most humid month in San Jose is January with average humidity going up to 75%. The least humid month is June with an average humidity of 63%.
Rain
Amount of rainfall in mm. in San Jose during the whole year based on historical data:
The sunniest and driest month is July with approximately 17 sunny days and a total precipitation of around 29 mm. The rainiest and wettest month is February with approximately 12 rainy days and 125 mm of total precipitation.
FAQ
Frequently asked questions about the weather in San Jose:
What is the hottest month in San Jose?
The hottest month in San Jose is August with average maximum temperature of +28°C.
What is the coldest month in San Jose?
The coldest month in San Jose is January with minimum temperatures of +6°C.
Is San Jose worth visiting in winter?
Winter in San Jose could be a good time to visit, as the weather is generally ok.
When does it rain the least in San Jose?
if you're looking to visit San Jose when it rains the least, you should plan your trip for February, January, March. During this time, rainfall is rare with the driest month being September with only 6 mm of rain.
For this page, we’ve looked at the typical weather in San Jose, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.