Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
December verdict
Tonga in December
Weather score74Very good
Very 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 143mm, so some wet days are possible.
December weather
Monthly averages
Temp
29°C
Rain
143mm
Sun
0h
Sea
27°C
Weather score
74
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 143mm, so some wet days are possible.
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 Tonga with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December29°C average high
December 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
December143mm average rain
December 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
December0 hours average sun
December 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
December27°C average sea
December 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
December74 weather score
December scores above Tonga's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJuly to December
These months have the strongest weather score in the monthly averages.