The highest day temperature in September 2023 was 91°F. The lowest night temperature was 82°F. The average values for day and night temperatures during September were 89.6°F и 82.7°F respectivly.

The average sea surface temperature in September 2023 for San Juan del Sur was 89.1°F. The maximum and minimum values were 88.2°F and 89.6°F respectively.

Most of the days in September are gloomy but you can also expect sunny days.

Precipitation total in September for San Juan del Sur is 3.6 in.

The average wind speed in September is 8.7 mph. It makes September one of the most windless months of the year for San Juan del Sur.

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 September is 4.5 hours.