Arorangi Weather in September
During September, Arorangi experiences high daytime temperatures of 25°C (77°F) and cooler nights around 22°C (72°F). Expect quite a bit of rainfall. Around 81 mm (3.2 in) is typical.
Rainfall in Arorangi in September
Typically, you can expect about 11 days of rain this month, with 81 mm (3.2 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Arorangi in September
September is one of the better months to visit Arorangi. Expect 25°C (77°F) during the day and 22°C (72°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing.
Sunshine in Arorangi in September
The month experiences a moderate amount of sunlight, with 182 hours of sunshine. This provides a nice balance between sunshine and clouds.
Wind Speed in Arorangi in September
Wind speeds average 5 m/s (10 knots) during September. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Cook Islands, check out our Arorangi's climate page.
Arorangi Temperature in September
Min Temperature
22°C (72°F)
Max Temperature
25°C (77°F)
Chance of Rain
38%
Precipitation
81 mm (3.2 in)
Rainy days
11 days
Humidity
80% *
Windspeed
5 m/s (10 knots) *
Sunshine
182 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Arorangi typically stay consistent throughout September, with daily highs averaging around 25°C (77°F). Nights are warm, with lows around 21°C (70°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Arorangi in September
Browse day-by-day weather records for Arorangi spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Arorangi historical weather extremes in September
Our historical data for Arorangi spans 1976 to 2025, revealing these weather extremes.
- On September 11, 2003, temperatures climbed to 31°C (88°F), marking the warmest September day on record.
- The coldest September day was on September 12, 1984, with a maximum of 20°C (68°F).
- The coldest night in September in Arorangi was on September 3, 2003, with a minimum of 14°C (57°F).
Best Places in the Cook Islands in September
Find out more about the weather in the Cook Islands and which places have the best travel conditions in this month. See all of the Cook Islands in September →
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What to Wear in Arorangi in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Arorangi in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Cook Islands, check out our Arorangi's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Arorangi climate overview or explore weather in the Cook Islands.
