The highest day temperature in March 2025 was 97°F. The lowest night temperature was 50°F. The average values for day and night temperatures during March were 82.0°F и 68.4°F respectivly.

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

Precipitation total in March for San Juan is 0.4 in. This value is relatively stable throughout the year.

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 Juan in March is 9.6 hours.