San Jose, California weather in May
Temperature, rain and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Excellent
Best time to visit: April – October
What is the weather like in San Jose, California in May?
In May, San Jose, California is warm: daytime highs average 22 °C, and nights cool down to about 11 °C. With around 10 hours of sunshine a day, there is plenty of sun. Rain is rare: about 3 days bring 19 mm in total. All in all, May is an excellent month for a holiday in San Jose, California.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 14 h 9 min05:59 – 20:08
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 38 %on averageAll months
- Hot days
- 2 days30 °C or moreAll months
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
San Jose, California in May: quick answers
Is San Jose, California hot in May?
Warm rather than hot: in May, daytime highs in San Jose, California average 22 °C and nights cool to about 11 °C. On about 2 days the thermometer climbs to 30 °C or more.
Does it rain much in San Jose, California in May?
Rain is rare: about 3 days bring 19 mm in total.
San Jose, California month by month
The whole year in San Jose, CaliforniaAll destinations: USAWhere to go in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences