Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
September verdict
Batam, Riau Islands, Indonesia in September
Weather score53Mixed
Mixed for holiday weather
Average highs sit around 31°C, giving warm days by monthly-average standards. Sunshine averages 5.3h per day, enough for a balanced month. Rainfall averages 180mm, so some wet days are possible.
September weather
Monthly averages
Temp
31°C
Rain
180mm
Sun
5.3h
Weather score
53
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 180mm, so some wet days are possible.
Some sun
Sunshine averages 5.3h per day, enough for a balanced month.
Map
Weather map
Compare Batam, Riau Islands, Indonesia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September31°C average high
September is close to Batam's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
September180mm average rain
September sits on the drier side of Batam's year, which helps with sightseeing and transfers.
Driest monthsJanuary to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.3 hours average sun
September sits close to Batam's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsFebruary to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September53 weather score
September sits close to Batam's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJanuary to September
These months have the strongest weather score in the monthly averages.
