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San Jose (CA) Climate by Month

The temperature in San Jose can vary greatly throughout the year. The temperatures shift from warm to mild. It maintains fairly dry conditions year-round. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

Depending on the time of the year, temperatures range from comfortable to moderate in San Jose. Average daytime temperatures range from a comfortable 27°C in July, the warmest time of the year, to a moderate 15°C during cooler months like January. At night, temperatures typically average around 5°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

With annual rainfall averaging 309 mm, San Jose maintains relatively low precipitation levels throughout the seasons. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, December receives moderate rainfall, averaging 63 mm of precipitation, recorded across 11 rainy days. In contrast, the drier season, July brings less rainfall, with 0.1 mm over 0 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in San Jose. While May receives considerable daily sunshine with up to 10.8 hours, December marks the darkest time of the year, where sunshine is scarce with only 5.3 hours of sunlight per day.

Monthly hours of sunshine

Data from: San Francisco, the United States of America (53 KM, 32 Miles).

Daily hours of sunshine

Data from: San Francisco, the United States of America (53 KM, 32 Miles).

The best time of year to visit San Jose in the United States of America

During the months of April, May and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in San Jose?
    The hottest season / summer takes place in June, July, August and September.
  • Does San Jose have a dry season?
    Yes, the months of May, June, July, August, September and October are very dry.
  • Which is the warmest month in San Jose?
    July has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in San Jose?
    The coldest month is December with an average maximum temperature of 15°C.
  • Which is the wettest month in San Jose?
    December tops the wettest month list with 63 mm of rainfall.
  • Which is the driest month in San Jose?
    July is the driest month with 0 mm of precipitation.
  • Which is the sunniest month in San Jose?
    May is the sunniest month with an average of 324 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for San Jose (CA)

    Sun   Nov 24
    19°C | 7°C
    SE 18 km/h
    0.3 mm
    partly cloudy and  chance of slight rain

    partly cloudy and chance of slight rain

    Mon   Nov 25
    18°C | 12°C
    SE 18 km/h
    9.2 mm
    overcast and heavy rain

    overcast and heavy rain

    Tue   Nov 26
    17°C | 11°C
    NE 11 km/h
    6.2 mm
    overcast and heavy rain

    overcast and heavy rain