Climate of North Sumatra, Indonesia
Area-weighted average across North Sumatra. For where people actually live and travel, see the cities below.
North Sumatra, a subdivision of Indonesia, has a tropical climate on average. Area-weighted monthly temperatures across the whole territory range from 23.8°C / 74.8°F in January to 24.8°C / 76.6°F in May, with rainfall from 150 mm / 5.9 in to 310 mm / 12.2 in depending on the season (2692 mm / 106 in total across the year). See the 2 cities listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 23.8°C74.8°F | 221 mm8.7″ | Tropical |
| February | 24.2°C75.6°F | 176 mm6.9″ | Tropical |
| March | 24.5°C76.1°F | 227 mm8.9″ | Tropical |
| April | 24.7°C76.5°F | 245 mm9.6″ | Tropical |
| May | 24.8°C76.6°F | 201 mm7.9″ | Tropical |
| June | 24.5°C76.1°F | 150 mm5.9″ | Tropical |
| July | 24.2°C75.6°F | 150 mm5.9″ | Tropical |
| August | 24°C75.2°F | 187 mm7.4″ | Tropical |
| September | 23.9°C75°F | 253 mm10″ | Tropical |
| October | 23.9°C75°F | 310 mm12.2″ | Tropical |
| November | 23.8°C74.8°F | 295 mm11.6″ | Tropical |
| December | 23.8°C74.8°F | 277 mm10.9″ | Tropical |
Frequently asked questions
What is the best time to visit North Sumatra?
North Sumatra, Indonesia does not have a clear sunny-and-dry window by our cutoffs. The warmest month is May at 24.8°C / 76.6°F, and the driest is June at 150 mm / 5.9 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of North Sumatra?
North Sumatra, Indonesia has area-weighted monthly average temperatures ranging from 23.8°C / 74.8°F in January to 24.8°C / 76.6°F in May. Annual rainfall averages about 2692 mm / 106 in, with the wettest month being October (310 mm / 12.2 in) and the driest June (150 mm / 5.9 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in North Sumatra?
The hottest month in North Sumatra is May, with an area-wide average temperature of 24.8°C / 76.6°F.
What is the coldest month in North Sumatra?
The coldest month in North Sumatra is January, with an area-wide average temperature of 23.8°C / 74.8°F.
When does it rain most in North Sumatra?
The wettest month in North Sumatra is October, averaging about 310 mm / 12.2 in of rainfall. The driest is June with about 150 mm / 5.9 in.