Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
January verdict
Tongatapu, Tonga in January
Weather score68Good
Good for holiday weather
Average highs sit around 29°C, giving warm days by monthly-average standards. Sunshine averages 0h per day, so this is not one of the brighter months. Rainfall averages 197mm, so showers are a real planning factor.
January weather
Monthly averages
Temp
29°C
Rain
197mm
Sun
0h
Sea
27°C
Weather score
68
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 197mm, so showers are a real planning factor.
Limited sun
Sunshine averages 0h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 27°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Tongatapu, Tonga with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
January29°C average high
January sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJanuary to April and December
This stretch sets the upper range for average daytime heat.
Rain
January197mm average rain
January is one of Tongatapu's wettest months, so rain is likely to be a major planning factor.
Driest monthsMay to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
January0 hours average sun
January 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
January27°C average sea
January sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJanuary to April
Sea temperatures are usually near 27°C in this stretch, so swimming comfort is at its strongest.
Weather score
January68 weather score
January 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.