The best time to visit San Jose
Month-by-month climate averages for San Jose, CA, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit San Jose is usually February, March, April and May, when daytime highs sit in the pleasant 60-78°F range and the heaviest January rain is behind you.
San Jose is warmest in July (highs near 85°F) and coldest in December (lows around 42°F), with roughly 22 inches of precipitation across the year and January the wettest month. The sweet spot for most visitors is February, March, April and May.
These are long-run averages. For the actual days you are travelling, check the live San Jose forecast - and note how much the models agree, because that tells you how much to trust it.
San Jose weather by month
what to expect in San Jose through the year, 1991-2020 averagesHere is San Jose's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to San Jose by season.