Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
May verdict
Tonga in May
Weather score68Good
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 116mm, so some wet days are possible.
May weather
Monthly averages
Temp
28°C
Rain
116mm
Sun
0h
Sea
27°C
Weather score
68
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 116mm, 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 Tonga with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May28°C average high
May is close to Tonga'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
May116mm average rain
May sits near Tonga'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 Tonga's usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
May27°C average sea
May is close to Tonga's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to April and December
Sea temperatures are usually near 28°C in this stretch, so swimming comfort is at its strongest.
Weather score
May68 weather score
May scores below Tonga's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to December
These months have the strongest weather score in the monthly averages.