Best time to visit San Jose

May is the best month in San Jose, scoring 95 out of 100, with December the weakest at 61. The 34-point spread means timing is worth planning around without being decisive. 5 of the twelve months sit within ten points of the best, so there is more than one right answer.

August is the warmest month at 31.6 °C and December the coolest at 15.2 °C — a 16.4 °C spread across the year. Around 75 days a year top 30 °C, concentrated in August and the months either side.

There is a real wet season here. January, February, March and December carry the rain — up to 11 wet days in a month — while June to September drop as low as 0. That 11-day gap is the biggest single difference between a good month and a bad one in San Jose, and it moves further than the temperature does.

The sea peaks at just 15.4 °C, which is wetsuit territory even at its warmest — a coast to look at rather than swim in. Daylight runs from 9.6 hours in winter to 14.7 in summer, enough to notice on a sightseeing itinerary.

The three strongest months are May, June, October. The one to think twice about is December. Each month below has its own page with rainfall reliability, extremes, daylight, sea temperature and crowd levels.

San Jose month by month