Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
September verdict
Suwarrow National Park, Cook Islands in September
Weather score73Very good
Very good for holiday weather
Average highs sit around 28°C, giving warm days by monthly-average standards. Sunshine averages 0h per day, so this is not one of the brighter months. Rainfall averages 94mm, so some wet days are possible.
September weather
Monthly averages
Temp
28°C
Rain
94mm
Sun
0h
Sea
27°C
Weather score
73
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 94mm, so some wet days are possible.
Limited sun
Sunshine averages 0h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 27°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Suwarrow National Park, Cook Islands with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September28°C average high
September is close to Suwarrow National Park's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
September94mm average rain
September is one of Suwarrow National Park's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJune to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September0 hours average sun
September is close to Suwarrow National Park's usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
September27°C average sea
September is one of the cooler sea months locally, though the water still averages warm enough for most swimmers.
Warmest seaJanuary to May and December
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
September73 weather score
September is one of Suwarrow National Park's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJuly to December
These months have the strongest weather score in the monthly averages.