Warm
Average highs sit around 27°C, giving warm days by monthly-average standards.
May verdict
Tongatapu, Tonga in May
Weather score69Good
Good for holiday weather
Average highs sit around 27°C, giving warm days by monthly-average standards. Sunshine averages 0h per day, so this is not one of the brighter months. Rainfall averages 112mm, so some wet days are possible.
May weather
Monthly averages
Temp
27°C
Rain
112mm
Sun
0h
Sea
26°C
Weather score
69
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 112mm, 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 Tongatapu, Tonga with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May27°C average high
May is close to Tongatapu's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJanuary to April and December
This stretch sets the upper range for average daytime heat.
Rain
May112mm average rain
May sits near Tongatapu's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsMay to November
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 Tongatapu'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 Tongatapu'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
May69 weather score
May scores below Tongatapu's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsSeptember to December
These months have the strongest weather score in the monthly averages.