The highest day temperature in May 2024 was 76°F. The lowest night temperature was 39°F. The average values for day and night temperatures during May were 58.2°F и 46.1°F respectivly.

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

Precipitation total in May for San Juan is 0.0 in. This value is relatively stable throughout the year.

The average wind speed in May is 6.1 mph. It makes May one of the most windless months of the year for San Juan.

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 May is 8.9 hours.