Ŭllyul in Summer
In summer (June, July and August), Ŭllyul sees average daytime highs around 28°C and overnight lows near 20°C, with 514 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 25°C in early June to 28°C by late August. The sky is clear or mostly clear about 27% of the time across summer, and the air most often feels muggy.
Summer is Ŭllyul's best season of the year to visit on our travel score. For the whole year in context, see Ŭllyul's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 20°C
- Rainfall
- 514 mm
- 37 wet days
- Avg wind
- 10 km/h
- Travel score
- 5.7
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Ŭllyul in Summer
Over the season highs climb from about 25°C in early June to 28°C by late August.
A typical summer day in Ŭllyul reaches about 28°C and drops to 20°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Ŭllyul
Once humidity and wind are folded in, summer brings about 21 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.
Ŭllyul 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 | 0° / -7° | 13 | 3.3 | 2.8 | 9.6 | 0.0 |
| Feb | 3° / -5° | 17 | 3.6 | 2 | 10.5 | 0.0 |
| Mar | 9° / -0° | 24 | 4.2 | 1 | 11.7 | 2.1 |
| Apr | 16° / 6° | 46 | 6.2 | 0.1 | 13 | 5.6 |
| May | 22° / 12° | 83 | 7.3 | 0 | 14.1 | 7.2 |
| Jun | 26° / 17° | 91 | 8.6 | 0 | 14.6 | 6.8 |
| Jul | 28° / 22° | 227 | 14.6 | 0 | 14.4 | 5.2 |
| Aug | 29° / 22° | 195 | 13.6 | 0 | 13.5 | 5.2 |
| Sep | 25° / 16° | 86 | 6.6 | 0 | 12.3 | 7.3 |
| Oct | 19° / 9° | 40 | 5.8 | 0 | 11 | 6.8 |
| Nov | 10° / 2° | 43 | 7.1 | 0.9 | 9.9 | 2.7 |
| Dec | 3° / -4° | 22 | 5.3 | 2.4 | 9.4 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 27% of the time across summer.
Chance of precipitation in Summer
Ŭllyul gets around 514 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 muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 10 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 30 min in early June to 12 h 54 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 5.2 kWh/m².
Hazard calendar for Ŭllyul
In summer, Ŭllyul overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Ŭllyul sits in the Pacific typhoon belt; the season peaks July–October.
Ŭllyul's rainy season runs July–August, when most of the year's rain falls.
Is summer a good time to visit Ŭllyul?
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 Ŭllyul for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Ŭllyul in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Ŭllyul sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 37 days see rain.
Sea temperature near Ŭllyul in Summer
The nearest coast averages about 19°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 30 km away) is warmest in August at about 22°C and coldest in February near 3°C.
It's comfortable for a long swim from Jul 16 to Oct 3 — about 2.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 6 | 3 | 4 | 7 | 11 | 16 | 20 | 22 | 22 | 19 | 15 | 10 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 6 | Bracing |
| Feb | 3 | Bracing |
| Mar | 4 | Bracing |
| Apr | 7 | Bracing |
| May | 11 | Bracing |
| Jun | 16 | Cool |
| Jul | 20 | Refreshing |
| Aug | 22 | Refreshing |
| Sep | 22 | Refreshing |
| Oct | 19 | Cool |
| Nov | 15 | Bracing |
| Dec | 10 | Bracing |
UV index in Ŭllyul 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 Ŭllyul peaks around August 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 at about 2 (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) | 2 | 3 | 4 | 6 | 7 | 6 | 8 | 8 | 7 | 4 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | High | High | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 8 | Very high |
| Sep | 7 | High |
| Oct | 4 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Ŭllyul 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 Ŭllyul is worst in November — around 82 µg/m³ PM2.5 (unhealthy), about 2.1× the cleanest month (July, 40 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) | 80 | 78 | 80 | 66 | 54 | 46 | 40 | 41 | 58 | 72 | 82 | 77 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Poor | Unhealthy | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 80 | Unhealthy |
| Feb | 78 | Unhealthy |
| Mar | 80 | Unhealthy |
| Apr | 66 | Unhealthy |
| May | 54 | Poor |
| Jun | 46 | Poor |
| Jul | 40 | Poor |
| Aug | 41 | Poor |
| Sep | 58 | Unhealthy |
| Oct | 72 | Unhealthy |
| Nov | 82 | Unhealthy |
| Dec | 77 | Unhealthy |
Where is Ŭllyul?
Ŭllyul sits at 38.5°N, 125.2°E, 29 m above sea level, in North Korea. The nearest listed city is Kwail-ŭp, 17 km away.
Topography around Ŭllyul
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ŭllyul.
Within 3 km, the terrain around Ŭllyul has significant variations in elevation — a maximum elevation change of 264 m around an average of 49 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,063 m; within 80 km, large variations in elevation — a maximum elevation change of 1,037 m.
The land around Ŭllyul is covered by cropland (70%) within 3 km, trees (45%) and cropland (42%) within 16 km, and water (38%), cropland (36%) and trees (21%) 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 Ŭllyul (38.5139°, 125.1897°, elevation 29 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.