Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
September verdict
Kei Islands, Indonesia in September
Weather score72Very good
Very good for holiday weather
Average highs sit around 30°C, giving warm days by monthly-average standards. Sunshine averages 8h per day, so bright days are a strong part of the month. Rainfall averages 67mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
30°C
Rain
67mm
Sun
8h
Sea
27°C
Weather score
72
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 67mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8h per day, so bright days are a strong part of the month.
Swimmable
Sea temperatures average 27°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Kei Islands, Indonesia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September30°C average high
September is close to Kei Islands' yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJanuary to May and October to December
This stretch sets the upper range for average daytime heat.
Rain
September67mm average rain
September is one of Kei Islands' driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJune to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September8 hours average sun
September is one of Kei Islands' sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsSeptember to October
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September27°C average sea
September is below Kei Islands' yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJanuary to May and November to December
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
September72 weather score
September is one of Kei Islands' best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJuly to October
These months have the strongest weather score in the monthly averages.