The highest day temperature in May 2025 was 95°F. The lowest night temperature was 82°F. The average values for day and night temperatures during May were 91.8°F и 83.6°F respectivly.

The average sea surface temperature in May 2025 for San Juan del Sur was 88.1°F. The maximum and minimum values were 86.4°F and 89.6°F respectively.

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

Precipitation total in May for San Juan del Sur is 2.2 in.

The average wind speed in May is 11.7 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 del Sur in May is 5.5 hours.