Sumatra Weather in May

Average temperatures, rainfall, sunshine and the best places to visit in Sumatra, Indonesia in May.

Considering a trip to Sumatra, Indonesia this May and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Sumatra in May

Sumatra, Indonesia is a region in Indonesia. May in Sumatra generally has temperatures that range from warm to very warm, with heavy precipitation.

Temperatures

During the day temperatures vary from warm in Tuk Tuk at 28°C (82°F) to very warm in Dumai at 34°C (93°F). At night it cools down to 25°C (77°F) in Dumai and 20°C (68°F) in Tuk Tuk. While the given temperatures for day and night are typical, there may be days that feel warmer. Make sure you're dressed in a way that keeps you cool and comfortable.

For a closer look at conditions across Sumatra, Indonesia, refer to the map below.

Precipitation

In May, precipitation varies across different areas. From heavy rainfall in Kalianda with an average of 161 mm (6.3 in) to heavy rainfall in Matur with 312 mm (12 in).

Average sunshine

Sunshine levels are moderate in most locations. Medan typically sees 136 hours of sunlight, creating comfortable conditions that aren't too bright or too dim. Looking for something sunnier? Our weather planner helps you discover destinations with more reliable sunshine.

Explore Sumatra by month

Best Places to Visit in Sumatra in May

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Sumatra.

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).

Popular Destinations in Sumatra

What is the weather like in May for some of the most popular destinations in Sumatra, Indonesia?

Temperature range in Sumatra (May)

Precipitation variation in Sumatra (May)

Medan

In May Medan generally has very high temperatures with maximum daytime temperatures around 33°C (91°F), minimum nighttime temperatures around 24°C (75°F) and heavy monthly rainfall. So on average the conditions are poor that month.

May
April
May
June
Max temperature
33°C (91°F)
33°C (91°F)
33°C (91°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly sun hours
132 hours
136 hours
160 hours
Monthly rainfall
252 mm (9.9 in)
266 mm (10 in)
208 mm (8.2 in)
Monthly rainy days
11 days
12 days
9 days
Weather conditions

Pekanbaru

In May Pekanbaru generally has very high temperatures with maximum daytime temperatures around 33°C (91°F), minimum nighttime temperatures around 24°C (75°F) and heavy monthly rainfall. So on average the conditions are poor that month.

May
April
May
June
Max temperature
33°C (91°F)
33°C (91°F)
33°C (91°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly rainfall
258 mm (10 in)
201 mm (7.9 in)
144 mm (5.7 in)
Monthly rainy days
17 days
15 days
12 days
Weather conditions

Tanjungpandan

In May Tanjungpandan generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are poor that month.

May
April
May
June
Max temperature
31°C (88°F)
31°C (88°F)
31°C (88°F)
Min temperature
25°C (77°F)
26°C (79°F)
25°C (77°F)
Monthly rainfall
310 mm (12 in)
229 mm (9 in)
176 mm (6.9 in)
Monthly rainy days
17 days
17 days
14 days
Weather conditions

Bukittinggi

In May Bukittinggi generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 20°C (68°F) and heavy monthly rainfall. So on average the conditions are poor that month.

May
April
May
June
Max temperature
29°C (84°F)
29°C (84°F)
29°C (84°F)
Min temperature
20°C (68°F)
20°C (68°F)
20°C (68°F)
Monthly rainfall
378 mm (15 in)
286 mm (11 in)
212 mm (8.3 in)
Monthly rainy days
19 days
16 days
14 days
Weather conditions

Matur

In May Matur generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are poor that month.

May
April
May
June
Max temperature
29°C (84°F)
29°C (84°F)
29°C (84°F)
Min temperature
21°C (70°F)
21°C (70°F)
20°C (68°F)
Monthly rainfall
401 mm (16 in)
312 mm (12 in)
228 mm (9 in)
Monthly rainy days
18 days
16 days
13 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Sumatra, in Indonesia.

Popular cities in May

Day & night temperatures, rainfall and average weather in Sumatra in May.

City Weather Day temp Night temp Rainfall
Medan 33°C (91°F) 24°C (75°F) 266 mm (10 in)
Pekanbaru 33°C (91°F) 24°C (75°F) 201 mm (7.9 in)
Tanjungpandan 31°C (88°F) 26°C (79°F) 229 mm (9 in)
Bukittinggi 29°C (84°F) 20°C (68°F) 286 mm (11 in)
Matur 29°C (84°F) 21°C (70°F) 312 mm (12 in)
Dumai 34°C (93°F) 25°C (77°F) 227 mm (8.9 in)

Sumatra weather in May: frequently asked questions

What is the weather like in Sumatra, Indonesia in May?

May in Sumatra, Indonesia brings poor weather. In Medan, daytime temperatures are typically around 33°C (91°F) and nighttime lows hover near 24°C (75°F).

What is the average temperature in Sumatra, Indonesia in May?

In Medan, the average daytime high in May is 33°C (91°F), while nighttime temperatures drop to around 24°C (75°F).

Does Sumatra, Indonesia get a lot of rain in May?

Expect plenty of rainfall. Medan records an average of 266 mm (10 in) in May, putting it among the wetter months for Sumatra, Indonesia.

Is May a Good Time to Visit Sumatra, Indonesia?

In our view, May might not be the best time to travel to Sumatra, Indonesia with often poor weather in Medan.

On average, the best time to visit Sumatra, Indonesia is in February with generally unpleasant weather in Medan.

Interested in more climate information?

We have much more information about the climate in Sumatra.

Weather and climate has detailed information for every country in the world. Are you going to Indonesia? Get detailed historical weather averages for many cities in Indonesia.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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