Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
September verdict
Christmas Island in September
Weather score85Excellent
Excellent 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 21mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
28°C
Rain
21mm
Sun
0h
Sea
26°C
Weather score
85
Excellent
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 21mm, 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 26°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Christmas Island with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September28°C average high
September is close to Christmas Island's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
September21mm average rain
September is one of Christmas Island's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJuly to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September0 hours average sun
September is close to Christmas Island's usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
September26°C average sea
September is one of the cooler sea months locally, though the water still averages warm enough for most swimmers.
Warmest seaJanuary to June and December
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
September85 weather score
September is one of Christmas Island's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsAugust to November
These months have the strongest weather score in the monthly averages.