Mild
Average highs are around 26°C, so days are mild rather than hot.
Weather Guide
Tongatapu, Tonga Average Monthly Weather
Weather score71Very good annual avg
Best months: November, October, December
Across the year, average daytime temperatures are around 27°C, sunshine averages 0h per day, and rainfall totals about 1515mm. Sea temperatures average 26°C across the year.
Annual weather
Annual averages
Temp
27°C
Rain
1515mm
Annual total
Sun
0h
Sea
26°C
Weather score
71
Very good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 67mm, 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 24°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
July26°C average high
July is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsJanuary to April and December
This stretch sets the upper range for average daytime heat.
Rain
July67mm average rain
July is one of Tongatapu's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsMay to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July0 hours average sun
July 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
July24°C average sea
July is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to April
Sea temperatures are usually near 27°C in this stretch, so swimming comfort is at its strongest.
Weather score
July70 weather score
July sits close to Tongatapu's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsSeptember to December
These months have the strongest weather score in the monthly averages.