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Sumba Weather in May
In Sumba, May brings very high daytime temperatures around 30°C (86°F), with nights cooling to 23°C (73°F). Some rainfall is to be expected.
Rainfall in Sumba in May
Typically, you can expect about 6 days of rain this month, with 50 mm (2 in) on average. When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.
Temperature in Sumba in May
In May, Sumba sees very high temperatures, with highs of 30°C (86°F). Nights drop to around 23°C (73°F). Mornings and evenings are often more comfortable than the peak afternoon hours. Nights stay warm at around 23°C (73°F), so light bedding and good ventilation are worth thinking about.For Sumba itself, July generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Sumba Temperature in May
Min Temperature
23°C (73°F)
Max Temperature
30°C (86°F)
Chance of Rain
20%
Precipitation
50 mm (2 in)
Rainy days
6 days
Sumba Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sumba - and find the best time to visit.
Daily Historical Temperatures
45-year average (1976-2025)
Based on our historical records, temperatures in Sumba typically stay consistent throughout May, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in May
Daily Historical Precipitation
45-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Sumba in May
Browse day-by-day weather records for Sumba spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sumba historical weather extremes in May
Based on 23 years of weather observations in Sumba between 2003 and 2026, these are the recorded extremes.
- On May 10, 2022, temperatures climbed to 34°C (93°F), marking the warmest May day on record.
- On May 31, 2004, Sumba saw its coldest May day with temperatures maxing out at 26°C (79°F).
- The lowest overnight temperature recorded in May was 18°C (64°F) (May 16, 2023).
Best Places in Indonesia in May
Find out more about the weather in Indonesia and which places have the best travel conditions in this month. See all of Indonesia in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Sumba in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket.
What To Do in Sumba in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling8/10 -
Walking8/10 -
Camping10/10 -
Outdoor sports8/10
Sumba 3-Day Forecast
More climate data for Sumba
See the full Sumba climate overview or explore weather in Indonesia.
Popular in May
Where to go in May - average daytime high across popular destinations.
Jakarta
32°C (90°F) Yogyakarta31°C (88°F) Sanur
29°C (84°F) Kuta29°C (84°F) Seminyak29°C (84°F) Canggu29°C (84°F) Ubud29°C (84°F) Bandung
28°C (82°F) Bucket list
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