Warm
Average highs sit around 27°C, giving warm days by monthly-average standards.
Weather Guide
Aitutaki, Cook Islands Average Monthly Weather
Weather score71Very good annual avg
Best months: September, October, August
Across the year, average daytime temperatures are around 28°C, sunshine averages 0h per day, and rainfall totals about 1601mm. Sea temperatures average 27°C across the year.
Annual weather
Annual averages
Temp
28°C
Rain
1601mm
Annual total
Sun
0h
Sea
27°C
Weather score
71
Very good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 58mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 0h per day, so this is not one of the brighter months.
Swimmable
Sea temperatures average 26°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Aitutaki, Cook Islands with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August27°C average high
August is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsJanuary to May and November to December
This stretch sets the upper range for average daytime heat.
Rain
August58mm average rain
August is one of Aitutaki's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJune to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August0 hours average sun
August is close to Aitutaki's usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
August26°C average sea
August is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to May and December
Sea temperatures are usually near 28°C in this stretch, so swimming comfort is at its strongest.
Weather score
August79 weather score
August is one of Aitutaki's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to November
These months have the strongest weather score in the monthly averages.