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Isla de Ometepe weather in September

Weather in Isla de Ometepe: September

Average day temperature: 82.8°F
Average night temperature: 75.2°F
Sea water temperature: 85.3°F
Number of sunny days: 0 days
Day length: 12.0 - 12.3 hours
Number of rainy days: 8 days
Precipitation totals: 3.6 in.

Air temperature in September, °F

Show year:
2025
2024
2023

The highest day temperature during September of 2025 was 86°F. At the same time the lowest night temperature was 76°F. Daily and nightly averages during September were 84.0°F and 77.9°F.

Sea water temperature in Isla de Ometepe in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 84.6°F. The highest and lowest sea temperatures during the month were 86.7°F and 83.7°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Isla de Ometepe in September is 3.6 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 6.8 mph It makes September one of the least windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 4.6.

Best time for vacation in Isla de Ometepe

Sunniest months:
March 15 days
February 12 days
April 12 days
Warmest months:
April 90.1 °F
May 88.5 °F
March 88.2 °F
Warmest sea temp:
September 85.3 °F
October 85.3 °F
May 84.5 °F
Coldest months:
November 79.8 °F
December 80.9 °F
October 81.3 °F
Rainiest months:
June 11 days
October 9 days
September 8 days
Windiest months:
February 15.7 mph
January 15.5 mph
December 14.3 mph

Isla de Ometepe on a weather map

Isla de Ometepe
+77°F
W 17 mph
Feels like: +81°F
Precip.: 62%
Places in Nicaragua:
Name
°F
+70°F
+73°F
+77°F
+73°F
+81°F
+70°F
+77°F
+72°F
+77°F
+77°F
+61°F
+77°F
24 Hours Forecast
Isla de Ometepe
Local time: 23:47
December 05, friday
0000
77°F
W
17 mph
0300
75°F
SW
14 mph
0600
75°F
SW
15 mph
0900
79°F
SW
17 mph
1200
82°F
W
14 mph
1500
82°F
W
11 mph
1800
79°F
SW
13 mph
2100
79°F
SW
14 mph
Units of measurement: °C / °F