Sumba Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sumba.
Climate overview of Sumba
With consistently stable weather, Sumba, East Nusa Tenggara, Indonesia, sees little seasonal temperature change. Daytime highs average 30°C (86°F), ranging from 32°C (90°F) in October to 29°C (84°F) in July.
Rainfall is high, totalling around 1461 mm (58 in) per year. February is the wettest month and August the driest. The city also experiences distinct dry (June to October) and wet (December to March) seasons.
Sumba Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sumba - and find the best time to visit.
Monthly Temperature in Sumba
The climate in Sumba remains fairly constant, offering very warm temperatures throughout the year. Average maximum daytime temperatures range from a very warm 32°C (90°F) in October, the warmest time of the year, to a comfortable 29°C (84°F) during cooler months like July.
At night, you can expect temperatures ranging from 24°C (75°F) in October to around 21°C (70°F) during July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sumba
Sumba is known for its substantial rainfall, with annual precipitation reaching 1461 mm (58 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, February it receives heavy rainfall, averaging 298 mm (12 in) of precipitation, recorded across 18 rainy days. In contrast, the driest month August brings less rainfall, with 9.3 mm (0.4 in) over a single rainy day. For more details, please visit our Sumba Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Sumba
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July
- Warmest weather: March, April, September, October, November and December
- Fewest rainy days: July, August, September and October
- Wettest months: January, February, March, April and December, when rainfall is highest.
- Seasonal pattern: Distinct dry (June to October) and wet (December to March) seasons
Frequently asked questions about the climate in Sumba
What is the best time to visit Sumba?
July typically offers the most optimal weather in Sumba. In contrast, January, February, March and December tend to have less optimal conditions. Sumba has distinct dry (June to October) and wet (December to March) seasons.
What temperatures can I expect in Sumba?
Daytime highs range from 29°C (84°F) in July to 32°C (90°F) in October. Nighttime lows range from 21°C (70°F) to 24°C (75°F). Temperatures stay relatively stable year-round.
How much rain does Sumba get?
Annual rainfall is around 1461 mm (58 in). February is the wettest month with 298 mm (12 in), while August is the driest with 9.3 mm (0.4 in).
Sumba 3-Day Forecast
Sumba on the map
Sumba is highlighted - select any city to see its climate.
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