The highest day temperature in September 2025 was 99°F. The lowest night temperature was 75°F. The average values for day and night temperatures during September were 91.4°F и 75.8°F respectivly.

The average sea surface temperature in September 2025 for Ciudad Sandino was 88.4°F. The maximum and minimum values were 87.2°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 Ciudad Sandino is 3.7 in. It makes september one of the most rainy months of the year.

The average wind speed in September is 4.9 mph. It makes September one of the most windless months of the year for Ciudad Sandino.

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 Ciudad Sandino in September is 5.5 hours.