The highest day temperature in May 2025 was 90°F. The lowest night temperature was 57°F. The average values for day and night temperatures during May were 72.7°F и 64.0°F respectivly.

The average sea surface temperature in May 2025 for San Fernando was 70.2°F. The maximum and minimum values were 66.0°F and 74.4°F respectively.

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

Precipitation total in May for San Fernando is 1.1 in.

The average wind speed in May is 10.3 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 Fernando in May is 11.5 hours.