Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
May verdict
Rarotonga, Cook Islands in May
Weather score64Good
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 150mm, so some wet days are possible.
May weather
Monthly averages
Temp
28°C
Rain
150mm
Sun
0h
Sea
26°C
Weather score
64
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 150mm, 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 26°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
May28°C average high
May 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
May150mm average rain
May sits near Rarotonga's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJune to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May0 hours average sun
May 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
May26°C average sea
May 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
May64 weather score
May is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJune and August to November
These months have the strongest weather score in the monthly averages.