Medan in Summer
In summer (June, July and August), Medan sees average daytime highs around 32°C and overnight lows near 23°C, with 675 mm of rain over about 73 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Across summer, daytime highs hold fairly steady around 32°C. The sky is clear or mostly clear about 4% of the time across summer, and the air most often feels oppressive.
Summer is Medan's 2nd-best season to visit on our travel score. Medan has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Medan's year-round climate.
- Avg daytime high
- 32°C
- 2nd-warmest season
- Avg overnight low
- 23°C
- Rainfall
- 675 mm
- 73 wet days
- Avg wind
- 4 km/h
- Travel score
- 2.7
- 2nd-best season
- Months
- Jun · Jul · Aug
Temperature in Medan in Summer
Across summer, daytime highs hold fairly steady around 32°C.
A typical summer day in Medan reaches about 32°C and drops to 23°C overnight. The warmest of the three months is June, the coolest July.
How summer really feels in Medan
Once humidity and wind are folded in, summer brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Medan weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 23° | 203 | 24.7 | 11.8 | 3.0 |
| Feb | 31° / 23° | 145 | 20.5 | 11.9 | 3.0 |
| Mar | 32° / 23° | 190 | 23.1 | 12 | 2.7 |
| Apr | 32° / 23° | 243 | 26.1 | 12.1 | 2.3 |
| May | 32° / 23° | 279 | 27.1 | 12.2 | 2.3 |
| Jun | 32° / 23° | 209 | 22.9 | 12.2 | 2.7 |
| Jul | 32° / 23° | 217 | 24 | 12.2 | 2.8 |
| Aug | 31° / 23° | 249 | 26.1 | 12.1 | 2.6 |
| Sep | 31° / 23° | 353 | 28.2 | 12 | 2.4 |
| Oct | 31° / 23° | 393 | 29.5 | 11.9 | 2.4 |
| Nov | 30° / 23° | 366 | 28.7 | 11.8 | 2.5 |
| Dec | 30° / 23° | 302 | 27.9 | 11.8 | 2.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 4% of the time across summer.
Chance of precipitation in Summer
Medan gets around 675 mm of rain over 73 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 12 min in early June to 12 h 06 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.3 kWh/m².
Hazard calendar for Medan
In summer, Medan overlaps its cyclone season. The full year is below, with each hazard's peak months called out.
Medan sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Is summer a good time to visit Medan?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Medan.
What to pack for Medan in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Medan sees daytime highs around 32°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 73 days see rain.
Sea temperature near Medan in Summer
The nearest coast averages about 30°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 40 km away) is warmest in June at about 30°C and coldest in January near 29°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 29 | Tropical |
| Mar | 30 | Tropical |
| Apr | 30 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 29 | Tropical |
UV index in Medan in Summer
Clear-sky midday UV across summer averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Medan peaks around February 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (extreme).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 12 | 14 | 13 | 12 | 11 | 10 | 10 | 11 | 13 | 12 | 11 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 14 | Extreme |
| Mar | 13 | Extreme |
| Apr | 12 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Extreme |
| Aug | 11 | Extreme |
| Sep | 13 | Extreme |
| Oct | 12 | Extreme |
| Nov | 11 | Extreme |
| Dec | 10 | Extreme |
Air quality in Medan in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Medan is worst in September — around 33 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 26 | 28 | 32 | 31 | 30 | 29 | 30 | 30 | 33 | 30 | 23 | 23 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 26 | Moderate |
| Feb | 28 | Moderate |
| Mar | 32 | Moderate |
| Apr | 31 | Moderate |
| May | 30 | Moderate |
| Jun | 29 | Moderate |
| Jul | 30 | Moderate |
| Aug | 30 | Moderate |
| Sep | 33 | Moderate |
| Oct | 30 | Moderate |
| Nov | 23 | Moderate |
| Dec | 23 | Moderate |
Where is Medan?
Medan sits at 3.6°N, 98.7°E, 26 m above sea level, in Indonesia. The nearest listed city is Sunggal, 6.0 km away.
Topography around Medan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Medan.
Within 3 km, the terrain around Medan has only modest variations in elevation — a maximum elevation change of 25 m around an average of 27 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 127 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,429 m.
The land around Medan is covered by artificial surfaces (85%) within 3 km, trees (42%) and artificial surfaces (37%) within 16 km, and trees (61%) and water (26%) within 80 km.
Indonesia travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 29% of US
- price level, 2025
- GDP per capita
- $5,060
- 2025
- Happiness
- 5.6 / 10
- World Happiness, 2025
- Safe drinking water
- 30%
- of population, 2024
- Homicide rate
- 0.3
- per 100k, 2022
- Road deaths
- 11.3
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 471
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Medan (3.5833°, 98.6667°, elevation 26 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.