Warm
Average highs sit around 27°C, giving warm days by monthly-average standards.
Weather Guide
San Jose, California, United States Average Monthly Weather
Weather score50Mixed annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 21°C, sunshine averages 8.6h per day, and rainfall totals about 534mm. Sea temperatures average 13°C across the year.
Annual weather
Annual averages
Temp
21°C
Rain
534mm
Annual total
Sun
8.6h
Sea
13°C
Weather score
50
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 2mm, which is relatively low for holiday planning.
Bright
Sunshine averages 11h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Weather map
Compare San Jose, California, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July27°C average high
July is one of San Jose's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
July2mm average rain
July is one of San Jose's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsApril to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July11 hours average sun
July is one of San Jose's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July14°C average sea
July sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to October
Sea temperatures are usually near 14°C in this stretch, so swimming comfort is at its strongest.
Weather score
July74 weather score
July is one of San Jose's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
