Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
December verdict
Rarotonga, Cook Islands in December
Weather score72Very 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 175mm, so some wet days are possible.
December weather
Monthly averages
Temp
28°C
Rain
175mm
Sun
0h
Sea
27°C
Weather score
72
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 175mm, so some wet days are possible.
Limited sun
Sunshine averages 0h per day, so this is not one of the brighter months.
Swimmable
Sea temperatures average 27°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Rarotonga, Cook Islands with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December28°C average high
December is close to Rarotonga's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJanuary to April and November to December
This stretch sets the upper range for average daytime heat.
Rain
December175mm average rain
December is wetter than Rarotonga's yearly average, so flexible plans matter more.
Driest monthsJune to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December0 hours average sun
December is close to Rarotonga's usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
December27°C average sea
December is close to Rarotonga's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to April
Sea temperatures are usually near 27°C in this stretch, so swimming comfort is at its strongest.
Weather score
December72 weather score
December sits close to Rarotonga's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune and August to November
These months have the strongest weather score in the monthly averages.