The highest day temperature in March 2025 was 67°F. The lowest night temperature was 35°F. The average values for day and night temperatures during March were 56.3°F и 46.6°F respectivly.

The average sea surface temperature in March 2025 for San Sebastian was 55.9°F. The maximum and minimum values were 55.0°F and 56.6°F respectively.

You can expect various weather conditions during March. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in March for San Sebastian is 3.2 in.

The average wind speed in March is 8.3 mph.

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 Sebastian in March is 6.1 hours.