Warm
Average highs sit around 32°C, giving warm days by monthly-average standards.
January verdict
Sumba, East Nusa Tenggara, Indonesia in January
Weather score52Mixed
Mixed 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 291mm, so showers are a real planning factor.
January weather
Monthly averages
Temp
32°C
Rain
291mm
Sun
5.9h
Sea
29°C
Weather score
52
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 291mm, so showers are a real planning factor.
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 Sumba, East Nusa Tenggara, Indonesia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
January32°C average high
January is close to Sumba's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
January291mm average rain
January is one of Sumba's wettest months, so rain is likely to be a major planning factor.
Driest monthsJune to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
January5.9 hours average sun
January is one of Sumba's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to October
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
January29°C average sea
January is one of Sumba's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJanuary to April and November to December
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
January52 weather score
January is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
