Warm
Average highs sit around 32°C, giving warm days by monthly-average standards.
January verdict
Dumai, Indonesia in January
Weather score63Good
Good for holiday weather
Average highs sit around 32°C, giving warm days by monthly-average standards. Sunshine averages 5.9h per day, enough for a balanced month. Rainfall averages 156mm, so some wet days are possible.
January weather
Monthly averages
Temp
32°C
Rain
156mm
Sun
5.9h
Sea
29°C
Weather score
63
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 156mm, so some wet days are possible.
Some sun
Sunshine averages 5.9h per day, enough for a balanced month.
Warm sea
Sea temperatures average 29°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Dumai, Indonesia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
January32°C average high
January is close to Dumai's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
January156mm average rain
January sits on the drier side of Dumai's year, which helps with sightseeing and transfers.
Driest monthsJanuary to February and May to July
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
January5.9 hours average sun
January is below Dumai's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsFebruary to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
January29°C average sea
January is one of the cooler sea months locally, though the water still averages warm enough for most swimmers.
Warmest seaMarch to November
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
January63 weather score
January scores above Dumai's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJanuary to August
These months have the strongest weather score in the monthly averages.