Onsŏng in Summer
In summer (June, July and August), Onsŏng sees average daytime highs around 24°C and overnight lows near 15°C, with 342 mm of rain over about 37 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Over the season highs climb from about 21°C in early June to 24°C by late August. The sky is clear or mostly clear about 19% of the time across summer, and the air most often feels humid.
Summer is Onsŏng's best season of the year to visit on our travel score. For the whole year in context, see Onsŏng's year-round climate.
- Avg daytime high
- 24°C
- warmest season of the year
- Avg overnight low
- 15°C
- Rainfall
- 342 mm
- 37 wet days
- Avg wind
- 7 km/h
- Travel score
- 6.2
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Onsŏng in Summer
Over the season highs climb from about 21°C in early June to 24°C by late August.
A typical summer day in Onsŏng reaches about 24°C and drops to 15°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Onsŏng
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Onsŏng 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 | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -7° / -18° | 9 | 1.5 | 1.9 | 9.2 | 0.0 |
| Feb | -3° / -15° | 10 | 2.1 | 2.6 | 10.2 | 0.0 |
| Mar | 4° / -7° | 23 | 5 | 4.2 | 11.6 | 0.4 |
| Apr | 13° / 1° | 43 | 7.4 | 2.5 | 13.1 | 3.6 |
| May | 18° / 7° | 79 | 11.8 | 0.3 | 14.4 | 5.6 |
| Jun | 22° / 13° | 76 | 11.7 | 0 | 15.1 | 6.2 |
| Jul | 25° / 17° | 137 | 13.1 | 0 | 14.8 | 6.2 |
| Aug | 25° / 17° | 129 | 12.4 | 0 | 13.8 | 6.3 |
| Sep | 21° / 10° | 65 | 8.1 | 0 | 12.3 | 6.8 |
| Oct | 13° / 2° | 40 | 6.3 | 0.9 | 10.8 | 4.3 |
| Nov | 3° / -6° | 26 | 4.8 | 3.4 | 9.5 | 0.3 |
| Dec | -6° / -15° | 11 | 2.7 | 3 | 8.9 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 19% of the time across summer.
Chance of precipitation in Summer
Onsŏng gets around 342 mm of rain over 37 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 54 min in early June to 13 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 4.7 kWh/m².
Hazard calendar for Onsŏng
In summer, Onsŏng overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Onsŏng's rainy season runs May–September, when most of the year's rain falls.
Is summer a good time to visit Onsŏng?
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 reasonable time to visit Onsŏng for sightseeing.
What to pack for Onsŏng in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Onsŏng sees daytime highs around 24°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 37 days see rain.
UV index in Onsŏng in Summer
Clear-sky midday UV across summer averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Onsŏng peaks around August 19 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 5 | 7 | 7 | 5 | 8 | 6 | 4 | 2 | 1 |
| Level | Low | Low | Moderate | High | High | High | High | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | High |
| May | 7 | High |
| Jun | 7 | High |
| Jul | 5 | High |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Onsŏng 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 Onsŏng is worst in March — around 47 µg/m³ PM2.5 (poor), about 2.7× the cleanest month (August, 17 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 35 | 37 | 47 | 36 | 28 | 22 | 19 | 17 | 21 | 26 | 29 | 29 |
| Level | Moderate | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 35 | Moderate |
| Feb | 37 | Poor |
| Mar | 47 | Poor |
| Apr | 36 | Poor |
| May | 28 | Moderate |
| Jun | 22 | Moderate |
| Jul | 19 | Moderate |
| Aug | 17 | Moderate |
| Sep | 21 | Moderate |
| Oct | 26 | Moderate |
| Nov | 29 | Moderate |
| Dec | 29 | Moderate |
Where is Onsŏng?
Onsŏng sits at 43.0°N, 130.0°E, 83 m above sea level, in North Korea. The nearest listed city is Namyang-nodongjagu, 11 km away.
Topography around Onsŏng
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Onsŏng.
Within 3 km, the terrain around Onsŏng has only modest variations in elevation — a maximum elevation change of 172 m around an average of 94 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 762 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,475 m.
The land around Onsŏng is covered by cropland (82%) within 3 km, trees (61%) and cropland (27%) within 16 km, and trees (76%) within 80 km.
North Korea travel facts
- Travel advisory
- Level 4
- Do Not Travel
- Power plugs
- Type C / F
- 220 V · 50 Hz
- Safe drinking water
- 67%
- of population, 2023
- Road deaths
- 24.2
- per 100k/yr, 2019
- Income group
- Low
- World Bank
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 Onsŏng (42.9572°, 129.9933°, elevation 83 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.