Hot
Average highs reach 33°C, so days can feel very hot.
Weather Guide
Sumba, East Nusa Tenggara, Indonesia Average Monthly Weather
Weather score72Very good annual avg
Best months: August, July, September
Across the year, average daytime temperatures are around 32°C, sunshine averages 7.9h per day, and rainfall totals about 1718mm. Sea temperatures average 28°C across the year.
Annual weather
Annual averages
Temp
32°C
Rain
1718mm
Annual total
Sun
7.9h
Sea
28°C
Weather score
72
Very good avg
Seasonal climate calendar
Trip feel
Showers
Rainfall averages 100mm, so some wet days are possible.
Bright
Sunshine averages 9.1h per day, so bright days are a strong part of the month.
Warm sea
Sea temperatures average 28°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
October33°C average high
October 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
October100mm average rain
October sits on the drier side of Sumba's year, which helps with sightseeing and transfers.
Driest monthsJune to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
October9.1 hours average sun
October is one of Sumba's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsMay to October
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
October28°C average sea
October is close to Sumba's yearly sea-temperature average, so swimming comfort is fairly typical.
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
October78 weather score
October scores above Sumba's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
