Measurements:
°C
°F
Avarua 
72°F
W 16 mph
Feels like: 72°F
Precip: 14%
World Resorts Cook Islands Avarua  Weather September Weather in Avarua 

Avarua  Weather: September

Average Day Temperature: 77.8°F
Average Night Temperature: 75.9°F
Sea Water Temperature: 79.1°F
Number of Sunny Days: 4 days
Sunshine Hours: 11.7 - 12.3 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.7 in

Air Temperature in September, °F

Select Year: 2026 2025 2024

The highest day temperature in September 2026 was 78°F. The lowest night temperature was 68°F. The average values for day and night temperatures during September were 73.3°F и 73.0°F respectivly.

Avarua  Water Sea Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Avarua  was 77.7°F. The maximum and minimum values were 75.4°F and 80.0°F respectively.

Sunny, Cloudy and Gloomy days

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

Precipitation Totals in September, in

Precipitation total in September for Avarua  is 1.7 in. It makes september the least rainy month of the year.

Wind Speed in September, mph

The average wind speed in September is 15.1 mph.

Average Sunny Hours Per Day

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 Avarua  in September is 5.4 hours.

Best Time to Visit Avarua 
The most sunny months:
July 5 days
August 5 days
May 4 days
The most warm months:
March 87.0 °F
February 86.5 °F
January 85.8 °F
Warmest sea temperature:
March 85.9 °F
February 85.5 °F
April 84.9 °F
The most cold months:
August 77.3 °F
September 77.8 °F
October 78.8 °F
The most rainy months:
March 11 days
February 9 days
January 8 days
The most windy months:
October 16 mph
May 15 mph
July 15 mph

Avarua  on the Weather Map

Cook Islands Resorts:
NAME
F°
Avarua  +72
24 Hours Weather Forecast
Avarua 
Local time: 11:47
28 sep, monday
1200 72°F
W
16 mph
1500 72°F
W
17 mph
1800 72°F
NW
17 mph
2100 72°F
NW
19 mph
29 sep, tuesday
0000 70°F
W
19 mph
0300 70°F
NW
20 mph
0600 70°F
NW
20 mph
0900 72°F
NW
20 mph