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Sumba Island

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Sumba Island Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Sumba Island year round climate

  • Spring (March–May): Average 27.6–27.8°C, hot climate, rainfall gradually decreases, very little rainfall in May. Common activities: Surfing, beach relaxation, exploring the island’s inland areas. Recommended clothing: Light and breathable clothing, sun hat, sunglasses.
  • Summer (June–August): Average 25.9–26.5°C, relatively cool and dry climate, very little rainfall. Common activities: Surfing, diving, snorkeling, watching the sunset. Recommended clothing: Light short-sleeved clothing, shorts, sandals.
  • Autumn (September–November): Average 27.3–28.5°C, hot climate, rainfall begins to increase, but overall still relatively dry. Common activities: Hiking, cultural experiences, visiting local villages. Recommended clothing: Light and breathable clothing, a light jacket can be prepared to prevent nighttime chill.
  • Winter (December–February): Average 27.4–28.4°C, hot and humid climate, more rainfall, February is the peak of the rainy season. Common activities: Observing wildlife, waterfall exploration, enjoying rainforest scenery. Recommended clothing: Light and breathable clothing, rain gear is essential.

Sumba Island climatological average

Annual average temperature: approx. 27.5°C / Annual rainfall: approx. 1127 mm / Summer humidity: 60%–70% / Rainiest month: February

Sumba Island monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
28.3°C
124
February
27.4°C
266.3
March
27.8°C
205.3
April
27.8°C
203.7
May
27.6°C
7.5
June
26.5°C
49.7
July
25.9°C
5
August
26.2°C
1.7
September
27.3°C
25
October
28.4°C
23
November
28.5°C
51.7
December
28.4°C
164.7

Sumba Island weather for the next seven days

12/15
Monday
Moderate rain
29.8°C/24°C
12/16
Tuesday
Patchy rain nearby
29.7°C/23.9°C
12/17
Wednesday
Patchy rain nearby
29.6°C/24.1°C
12/18
Thursday
Moderate rain
29.7°C/23.5°C
12/19
Friday
Patchy rain nearby
29.6°C/23.4°C
12/20
Saturday
Patchy rain nearby
29.8°C/23.4°C
12/21
Sunday
Patchy rain nearby
30.1°C/23.7°C

Sumba Island Frequently Asked Questions and Useful Information for Travel

Best time to visit Sumba?

The best time to visit Sumba is from May to October, which is the dry season and the weather is sunny and cold.

A must-see?

Must-see attractions include Walakiri Beach, Lake Walakuli, Lapopu Falls and Manupe Tanah Daru National Park, among others.