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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 81–82°F, 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 78–79°F, 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 81–83°F, 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 81–83°F, 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. 81.5°F / Annual rainfall: approx. 1127 mm / Summer humidity: 60%–70% / Rainiest month: February

Sumba Island monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
82.9°F
124
February
81.3°F
266.3
March
82°F
205.3
April
82°F
203.7
May
81.7°F
7.5
June
79.7°F
49.7
July
78.6°F
5
August
79.2°F
1.7
September
81.1°F
25
October
83.1°F
23
November
83.3°F
51.7
December
83.1°F
164.7

Sumba Island weather for the next seven days

12/17
Wednesday
Patchy rain nearby
85.8°F/75.9°F
12/18
Thursday
Heavy rain
85.8°F/75.3°F
12/19
Friday
Moderate rain
85.5°F/74.1°F
12/20
Saturday
Patchy rain nearby
87°F/73.9°F
12/21
Sunday
Patchy rain nearby
85°F/74.1°F
12/22
Monday
Patchy rain nearby
86.7°F/74.4°F
12/23
Tuesday
Patchy rain nearby
85.5°F/74.6°F

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.