The highest day temperature in June 2026 was 84°F. The lowest night temperature was 59°F. The average values for day and night temperatures during June were 77.2°F и 63.2°F respectivly.

The average sea surface temperature in June 2026 for San Jose was 89.9°F. The maximum and minimum values were 88.6°F and 91.4°F respectively.

Most of the days in June are gloomy but you can also expect sunny days.

Precipitation total in June for San Jose is 19.9 in. It makes june one of the most rainy months of the year.

The average wind speed in June is 3.0 mph. It makes June one of the most windless months of the year for San Jose.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for San Jose in June is 4.8 hours.