COVID-19 (Coronavirus) may impact your travel plans and the data on our site. Stay safe, and always check official travel advice before you book.

Best time to visit Sumba Island, Indonesia

Our verdict

The best time to visit Sumba Island is May-July

When’s the best time to visit Sumba Island, you ask? Based on several factors like the weather and climate, cost of flights and hotels, peak travel seasons and much more, the best time to go to Sumba Island is May-July.

In the height of summer, temperatures in Sumba Island can reach a maximum of 32℃ (90℉). The coldest it usually gets in winter-time in Sumba Island is around 21℃ (70℉).

The sun stays up the longest in Sumba Island in December, so you’ll get the most out of your daytime activities if you visit around this time. On average it rains the most days in January, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.

Keep reading to learn more about the best times to go to Sumba Island, including detailed weather information and tools to help you find and book great deals on your travel.

Warmest month

November

Least rainfall

August

Most daylight

December

Sumba Island seasons

Before you continue, it’s important to know when the seasons are in Sumba Island as they might be different to yours depending on where in the world you’re travelling from. Sumba Island is in the Southern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer December to February
Autumn/fall March to May
Winter June to August
Spring September to November

Average temperatures in Sumba Island

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Sumba Island for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Sumba Island climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Sumba Island for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Sumba Island in January

  • Average temperature: 27℃ (81℉)
  • Average high temperature: 29℃ (84℉)
  • Average low temperature: 25℃ (77℉)
  • Average humidity: 81%
  • Average sunny days: 0 days
  • Average rainfall: 181mm (7") over 30 days
0 days
of pure sunshine
30 days
of showers or rain

What to pack: If you’re heading to Sumba Island in January, make sure you pack t-shirts and light clothing.


Sumba Island in February

  • Average temperature: 27℃ (81℉)
  • Average high temperature: 29℃ (84℉)
  • Average low temperature: 25℃ (77℉)
  • Average humidity: 81%
  • Average sunny days: 1 days
  • Average rainfall: 158mm (6") over 26 days
1 days
of pure sunshine
26 days
of showers or rain

What to pack: If you’re heading to Sumba Island in February, make sure you pack t-shirts and light clothing.


Sumba Island in March

  • Average temperature: 27℃ (81℉)
  • Average high temperature: 29℃ (84℉)
  • Average low temperature: 25℃ (77℉)
  • Average humidity: 81%
  • Average sunny days: 1 days
  • Average rainfall: 179mm (7") over 28 days
1 days
of pure sunshine
28 days
of showers or rain

What to pack: If you’re heading to Sumba Island in March, make sure you pack t-shirts and light clothing.


Sumba Island in April

  • Average temperature: 27℃ (81℉)
  • Average high temperature: 29℃ (85℉)
  • Average low temperature: 25℃ (77℉)
  • Average humidity: 79%
  • Average sunny days: 4 days
  • Average rainfall: 75mm (3") over 21 days
4 days
of pure sunshine
21 days
of showers or rain

What to pack: If you’re heading to Sumba Island in April, make sure you pack t-shirts and light clothing.


Sumba Island in May

  • Average temperature: 27℃ (80℉)
  • Average high temperature: 29℃ (83℉)
  • Average low temperature: 25℃ (77℉)
  • Average humidity: 80%
  • Average sunny days: 9 days
  • Average rainfall: 40mm (2") over 17 days
9 days
of pure sunshine
17 days
of showers or rain

What to pack: If you’re heading to Sumba Island in May, make sure you pack t-shirts and light clothing.


Sumba Island in June

  • Average temperature: 26℃ (78℉)
  • Average high temperature: 28℃ (82℉)
  • Average low temperature: 24℃ (75℉)
  • Average humidity: 79%
  • Average sunny days: 25 days
  • Average rainfall: 2mm (0") over 4 days
25 days
of pure sunshine
4 days
of showers or rain

What to pack: If you’re heading to Sumba Island in June, make sure you pack t-shirts and light clothing.


Sumba Island in July

  • Average temperature: 25℃ (77℉)
  • Average high temperature: 27℃ (81℉)
  • Average low temperature: 23℃ (74℉)
  • Average humidity: 77%
  • Average sunny days: 29 days
  • Average rainfall: 1mm (0") over 1 days
29 days
of pure sunshine
1 days
of showers or rain

What to pack: If you’re heading to Sumba Island in July, make sure you pack t-shirts and light clothing.


Sumba Island in August

  • Average temperature: 25℃ (77℉)
  • Average high temperature: 28℃ (82℉)
  • Average low temperature: 23℃ (73℉)
  • Average humidity: 74%
  • Average sunny days: 29 days
  • Average rainfall: 1mm (0") over 1 days
29 days
of pure sunshine
1 days
of showers or rain

What to pack: If you’re heading to Sumba Island in August, make sure you pack t-shirts and light clothing.


Sumba Island in September

  • Average temperature: 26℃ (79℉)
  • Average high temperature: 29℃ (84℉)
  • Average low temperature: 23℃ (74℉)
  • Average humidity: 73%
  • Average sunny days: 24 days
  • Average rainfall: 6mm (0") over 4 days
24 days
of pure sunshine
4 days
of showers or rain

What to pack: If you’re heading to Sumba Island in September, make sure you pack t-shirts and light clothing.

Sumba Island in October

  • Average temperature: 28℃ (82℉)
  • Average high temperature: 30℃ (87℉)
  • Average low temperature: 25℃ (77℉)
  • Average humidity: 72%
  • Average sunny days: 19 days
  • Average rainfall: 21mm (1") over 8 days
19 days
of pure sunshine
8 days
of showers or rain

What to pack: If you’re heading to Sumba Island in October, make sure you pack t-shirts and shorts.. It stays warm all day and night.


Sumba Island in November

  • Average temperature: 28℃ (83℉)
  • Average high temperature: 31℃ (87℉)
  • Average low temperature: 26℃ (78℉)
  • Average humidity: 74%
  • Average sunny days: 7 days
  • Average rainfall: 71mm (3") over 19 days
7 days
of pure sunshine
19 days
of showers or rain

What to pack: If you’re heading to Sumba Island in November, make sure you pack t-shirts and shorts.. It stays warm all day and night.


Sumba Island in December

  • Average temperature: 28℃ (82℉)
  • Average high temperature: 30℃ (86℉)
  • Average low temperature: 26℃ (78℉)
  • Average humidity: 78%
  • Average sunny days: 1 days
  • Average rainfall: 156mm (6") over 29 days
1 days
of pure sunshine
29 days
of showers or rain

What to pack: If you’re heading to Sumba Island in December, make sure you pack t-shirts and light clothing.


Top FAQs

The hottest month of the year in Sumba Island is usually November, where temperatures tend to rise to around 31℃ (87℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Sumba Island is generally around August. The dry season often coincides with cooler weather, so you should check the temperatures in August first to make sure it’s still a good time to go.
The rainiest time of year in Sumba Island is generally around January, although the wetter season can sometimes extend a few months either side of January too.
If you want to get the most out of your time visiting Sumba Island, or if you're just afraid of the dark, the days in December are usually the longest between sunrise and sunset.

Sumba Island map