North Sumatra weather in May
May is a fair month to visit North Sumatra: highs of 30°C (85°F) and about 200 mm (7.9 in) of rain on average. Nights average 24°C (75°F) and cloud cover 90% (NASA POWER, 2001–2025 averages). It is the 5th wettest month of the year and the warmest. Compared with April, it is about as warm and wetter; June brings highs of 29°C (85°F) and 137 mm (5.4 in) of rain.
Figures are long-term averages for Medan, the largest city in North Sumatra. See below for other places.
Is May a good time to visit North Sumatra?
fair month Weather score 49/100.
May is a fair month in North Sumatra. The weather is usually best in Jun, Jan–Apr.
Does it rain a lot in North Sumatra in May?
Yes, it is one of the rainy months: about 200 mm (7.9 in) falls in an average May. It is the 5th wettest month of the year.
How warm is North Sumatra in May?
Days average 30°C (85°F) and nights 24°C (75°F).
North Sumatra weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 28°C (82°F) | 22°C (72°F) | 149 mm | 87% | best |
| February | 28°C (83°F) | 23°C (73°F) | 90 mm | 81% | best |
| March | 29°C (84°F) | 23°C (73°F) | 142 mm | 83% | best |
| April | 29°C (85°F) | 24°C (74°F) | 137 mm | 88% | best |
| May | 30°C (85°F) | 24°C (75°F) | 200 mm | 90% | fair |
| June | 29°C (85°F) | 23°C (74°F) | 137 mm | 86% | best |
| July | 29°C (84°F) | 23°C (73°F) | 168 mm | 88% | fair |
| August | 29°C (84°F) | 23°C (73°F) | 199 mm | 91% | fair |
| September | 29°C (83°F) | 23°C (73°F) | 261 mm | 93% | least pleasant |
| October | 28°C (83°F) | 23°C (73°F) | 310 mm | 94% | least pleasant |
| November | 28°C (82°F) | 23°C (73°F) | 233 mm | 95% | least pleasant |
| December | 28°C (82°F) | 23°C (73°F) | 250 mm | 92% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across North Sumatra in May
Weather can differ a lot within North Sumatra: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Medan | 30°C (85°F) | 24°C (75°F) | 200 mm | fair |
| Percut | 30°C (85°F) | 24°C (75°F) | 200 mm | fair |
| Binjai | 30°C (85°F) | 24°C (75°F) | 200 mm | fair |
| Pematangsiantar | 29°C (84°F) | 24°C (76°F) | 225 mm | fair |
| Padangsidempuan | 27°C (80°F) | 21°C (70°F) | 283 mm | fair |
| Tanjungbalai | 29°C (84°F) | 27°C (81°F) | 206 mm | fair |
| Sunggal | 30°C (85°F) | 24°C (75°F) | 200 mm | fair |
| Perbaungan | 30°C (85°F) | 24°C (75°F) | 200 mm | fair |
| Kisaran | 29°C (84°F) | 24°C (76°F) | 225 mm | fair |
| Gunungsitoli | 29°C (84°F) | 28°C (82°F) | 204 mm | best |
| Tebingtinggi | 30°C (86°F) | 28°C (82°F) | 207 mm | fair |
| Rantauprapat | 29°C (84°F) | 24°C (75°F) | 263 mm | fair |