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Sumba Climate by Month

The weather in Sumba is characterized by a steady average temperature throughout the year. It also has a notably wet climate with much precipitation. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

The climate in Sumba remains fairly constant, offering very warm temperatures throughout the year. Average daytime temperatures range from a very warm 32°C in October, the warmest time of the year, to a comfortable 29°C during cooler months like August. At night, temperatures typically average around 21°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Sumba is known for its substantial rainfall, with annual precipitation reaching 1461 mm. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, February receives heavy rainfall, averaging 298 mm of precipitation, recorded across 18 rainy days. In contrast, the drier season, August brings less rainfall, with 9.3 mm over a single rainy day.

The mean monthly precipitation over the year, including rain, hail and snow

The best time of year to visit Sumba in Indonesia

Sumba has high temperatures year round ranging between 29°C and 31°C.
The best time to visit is during the drier months: May, June, July, August, September and October.

Other facts from our historical weather data:
  • When is the rainy season in Sumba?
    Rainy season in Sumba occurs in the months of January, February, March and December.
  • Does Sumba have a dry season?
    Yes, the months of July, August and September are very dry.
  • Which is the hottest month in Sumba?
    October has an average maximum temperature of 32°C and is the hottest month of the year.
  • Which is the coolest month in Sumba?
    The coolest month is August with an average maximum temperature of 29°C.
  • Which is the wettest month in Sumba?
    February tops the wettest month list with 298 mm of rainfall.
  • Which is the driest month in Sumba?
    August is the driest month with 9 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Sumba

    Thu   Nov 21
    33°C | 26°C
    NE 14 km/h
    9.1 mm
    broken clouds and rain

    broken clouds and rain

    Fri   Nov 22
    31°C | 26°C
    NE 11 km/h
    2.2 mm
    broken clouds and thunder

    broken clouds and thunder

    Sat   Nov 23
    32°C | 26°C
    NE 14 km/h
    clear and no rain

    clear and no rain