Weather in San Jose

Best time to visit

San José has two seasons, verano (literally “summer,” but better translated as “dry season”) from December through May, and invierno (“winter,” or rainy season) running June to November.

Rain is heaviest in September and October, when flooding can be a real problem. Prices rise and rooms fill in dry season, so plan ahead. Note that it’s always cool in San José and the Central Valley, so pack long pants and a light jacket if you plan to explore.

Night

Weather (night) Temp (min night) Rain (mm) Wind (mph) Humidity Pressure Visibility
Sun
Mist
Mist
1
7
°C
0.9mm
3
ne
95%
1,011mb
Poor
Mon
Mist
Mist
1
7
°C
1.4mm
3
ne
96%
1,010mb
Poor
Tue
Partly Cloudy Night
Partly cloudy skies
1
6
°C
0.9mm
4
ne
94%
1,011mb
Good
Wed
Overcast
Overcast skies
1
6
°C
0.8mm
2
ne
93%
1,012mb
Good
Thu
Mod Rain Swrs Night
Moderate or heavy rain shower
1
7
°C
3.2mm
2
nne
96%
1,012mb
Moderate
Fri
Mist
Mist
1
7
°C
3.8mm
2
ne
96%
1,011mb
Poor
Sat
Mist
Mist
1
6
°C
7.8mm
3
ne
95%
1,012mb
Poor
Sun
Heavy Rain Swrs Night
Torrential rain shower
2
0
°C
0mm
1
ese
97%
1,011mb
Poor
Mon
Heavy Rain Swrs Night
Torrential rain shower
1
9
°C
0mm
0
ene
98%
1,010mb
Poor
Last updated at 04:06, Tuesday 27 August
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Last updated: We update the weather data for San Jose from our weather partner every four hours. The time the last update was received is detailed here.
Actual Forecast Location: We have 830+ weather locations on the worldtravelguide.net website. Where no exact location is available we have used the nearest appropriate forecast point.
Symbols indicate the predominant weather for the day in question, calculated based on a weighting of different types of weather. So if a day is forecast to be sunny with the possibility of a brief shower, then we will see a sunny or partly cloudy symbol rather than a rain cloud. For the purpose of this forecast, 'day' is the entire 24 our period 00:00 to 23:59
The maximum temperature is the highest temperature forecast between dawn and dusk, and the minimum temperature is the lowest temperature expected from dusk on the day in question to dawn the next day. The temperature is in °C, or Celsius.
Wind speed and direction are the conditions expected at midday. Wind direction is based on a 16 point compass. W, SW, SSW, etc. The wind direction states where the wind originates. Wind speed is listed in MPH or miles per hour.
Humidity levels indicates how much water vapour the air contains compared to the maximum it could contain at that temperature. As a general guide:
  • 0 to 30 is very low
  • 31 to 50 is low
  • 51 to 70 is moderate to low
  • 71 to 80 is moderate
  • 81 to 90 is moderate to high
  • 91 to 100 is high
Pressure is measured in millibars (mb)
Visibility based on whether the human eye can see the following distances:
  • Very poor - less than 1km
  • Poor - between 1km and 4km
  • Moderate - between 4km and 10km
  • Good - between 10km and 20km
  • Very good - between 20km and 40km
  • Excellent - more than 40km
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Sunlight in San Jose

San Jose Average Sunlight (hours)

Precipitation in San Jose

San Jose Average Precipitation (mm)

Humidity in San Jose

San Jose Humidity (AM and PM %)
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