The highest day temperature in April 2026 was 79°F. The lowest night temperature was 53°F. The average values for day and night temperatures during April were 70.8°F и 60.2°F respectivly.

The average sea surface temperature in April 2026 for San Jose was 63.4°F. The maximum and minimum values were 60.6°F and 66.4°F respectively.

Most of the days in April are sunny but you can also expect cloudy and gloomy days.

Precipitation total in April for San Jose is 0.5 in.

The average wind speed in April is 9.6 mph. This value is relatively stable throughout the year.

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 April is 10.5 hours.