Medan climate — normals and trends
Medan (Indonesia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 25.9 °C and it receives 3,081 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is May (26.6 °C on average) and the coldest is December (25.2 °C). Rainfall peaks in October.
Medan averages 0 frost days, 263 hot days (≥ 30 °C) and 308 rainy days per year.
Medan has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.3 °C (on 12 April 2020) and the coldest 16.2 °C (on 9 February 1944).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
MedanNorth Sumatra
- coords
- 3.58°, 98.67°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.9°C
Average daily high
30.8°C
Average daily low
22.1°C
Annual rainfall
3,081mm
Sunshine / day
9.9h
Mean relative humidity
86%
Average peak wind
8.2km/h
Seasonal range
1.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
263 d/yr
Rainy days (≥ 1 mm)
308 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.5 °C
Average feels-like low
26.0 °C
Average peak gust
22.2 km/h
Tropical nights (≥ 20 °C)
353 d/yr
Solar radiation
18.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.86 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
36.3 °C
12 April 2020
Coldest day
16.2 °C
9 February 1944
Wettest day
147 mm
29 November 2008
Windiest day
20.4 km/h
2 December 1981
Strongest gust
45.0 km/h
6 June 2012
Hottest feels-like
44.6 °C
24 May 1962
Coldest feels-like
16.2 °C
9 February 1944
Sunniest day
12.2 h
2 July 2016
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 30.1 °C | 0.0 °C | 293 mm | +116 mm |
| Feb | 31.3 °C | +0.5 °C | 167 mm | +30 mm |
| Mar | 31.8 °C | +0.4 °C | 229 mm | +46 mm |
| Apr | 31.7 °C | +0.1 °C | 372 mm | +133 mm |
| May | 32.5 °C | +1.0 °C | 408 mm | +129 mm |
| Jun | 32.1 °C | +0.6 °C | 185 mm | -6 mm |
| Jul | 32.7 °C | +1.6 °C | 113 mm | -85 mm |
| Aug | 31.7 °C | +0.7 °C | 202 mm | -53 mm |
| Sep | 31.4 °C | +0.8 °C | 232 mm | -128 mm |
| Oct | 30.7 °C | +0.5 °C | 251 mm | -156 mm |
| Nov | 29.7 °C | -0.2 °C | 537 mm | +170 mm |
| Dec | 30.0 °C | +0.3 °C | 259 mm | -30 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Medan?
Medan has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 25.9 °C and it receives 3,081 mm of precipitation per year.
What is the hottest day ever recorded in Medan?
The hottest day measured in Medan between 1940 and 2025 was 12 April 2020, reaching 36.3 °C.
What is the coldest day in Medan?
The coldest day measured in Medan between 1940 and 2025 was 9 February 1944, at 16.2 °C.
Does it snow in Medan?
Almost never: Medan sees virtually no snow, with about 0 frost days per year.
Has the climate of Medan warmed?
Yes: Medan warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Medan?
The wettest day measured in Medan between 1940 and 2025 was 29 November 2008, with 147 mm of rain in 24 hours.
What was the windiest day in Medan?
The windiest day measured in Medan between 1940 and 2025 was 2 December 1981, with winds reaching 20.4 km/h.
What is the warmest month in Medan?
The warmest month in Medan is May (26.6 °C on average); the coldest is December (25.2 °C).
How much does it rain in Medan?
Medan receives on average 3,081 mm of precipitation per year, spread over about 308 rainy days.
Is it sunny in Medan?
Medan gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.
Are there tropical nights in Medan?
Yes: Medan has on average 353 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Medan?
In Medan, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 24 May 1962, and the lowest was 16.2 °C on 9 February 1944.
Compare Medan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Medan