North Sumatra weather in January
January is one of the best months to visit North Sumatra: highs of 28°C (82°F) and about 149 mm (5.9 in) of rain on average. Nights average 22°C (72°F) and cloud cover 87% (NASA POWER, 2001–2025 averages). It is the 5th driest month of the year and the 2nd coolest. Compared with December, it is about as warm and drier; February brings highs of 28°C (83°F) and 90 mm (3.5 in) of rain.
Figures are long-term averages for Medan, the largest city in North Sumatra. See below for other places.
Is January a good time to visit North Sumatra?
best month Weather score 58/100.
Yes. January is one of the best months for weather in North Sumatra.
Does it rain a lot in North Sumatra in January?
Some rain is normal: about 149 mm (5.9 in) falls in an average January. It is the 5th driest month of the year.
How warm is North Sumatra in January?
Days average 28°C (82°F) and nights 22°C (72°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 January
Weather can differ a lot within North Sumatra: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Medan | 28°C (82°F) | 22°C (72°F) | 149 mm | best |
| Percut | 28°C (82°F) | 22°C (72°F) | 149 mm | best |
| Binjai | 28°C (82°F) | 22°C (72°F) | 149 mm | best |
| Pematangsiantar | 28°C (82°F) | 23°C (73°F) | 180 mm | best |
| Padangsidempuan | 26°C (79°F) | 20°C (68°F) | 333 mm | least pleasant |
| Tanjungbalai | 28°C (82°F) | 26°C (78°F) | 196 mm | fair |
| Sunggal | 28°C (82°F) | 22°C (72°F) | 149 mm | best |
| Perbaungan | 28°C (82°F) | 22°C (72°F) | 149 mm | best |
| Kisaran | 28°C (82°F) | 23°C (73°F) | 180 mm | best |
| Gunungsitoli | 28°C (83°F) | 27°C (81°F) | 224 mm | fair |
| Tebingtinggi | 28°C (83°F) | 26°C (79°F) | 146 mm | best |
| Rantauprapat | 28°C (82°F) | 23°C (73°F) | 295 mm | least pleasant |