Hyesan in Fall
In fall (September, October and November), Hyesan sees average daytime highs around 10°C and overnight lows near -2°C, with 151 mm of precipitation over about 23 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 20°C in early September to -4°C by late November. The sky is clear or mostly clear about 41% of the time across fall, and the air most often feels dry.
Fall is Hyesan's 2nd-best season to visit on our travel score. For the whole year in context, see Hyesan's year-round climate.
- Avg daytime high
- 10°C
- 2nd-warmest season
- Avg overnight low
- -2°C
- Precipitation
- 151 mm
- 23 wet days
- Avg wind
- 7 km/h
- Travel score
- 3.0
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Hyesan in Fall
Over the season highs ease from about 20°C in early September to -4°C by late November.
A typical fall day in Hyesan reaches about 10°C and drops to -2°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Hyesan
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 58 that feel at or below 0°C.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Hyesan weather by month
How the three fall months (September, October and November) 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 | -10° / -22° | 11 | 3.2 | 5 | 9.4 | 0.0 |
| Feb | -6° / -19° | 18 | 4.6 | 6.1 | 10.3 | 0.0 |
| Mar | 1° / -11° | 33 | 7.9 | 8.5 | 11.7 | 0.0 |
| Apr | 10° / -2° | 56 | 10.5 | 7.1 | 13.1 | 2.0 |
| May | 16° / 5° | 95 | 14.9 | 2 | 14.3 | 4.5 |
| Jun | 20° / 10° | 97 | 15.5 | 0 | 14.9 | 5.4 |
| Jul | 23° / 14° | 164 | 17.3 | 0 | 14.7 | 5.6 |
| Aug | 23° / 14° | 136 | 14.2 | 0 | 13.7 | 6.0 |
| Sep | 18° / 7° | 71 | 7.9 | 0.1 | 12.3 | 6.1 |
| Oct | 11° / -1° | 43 | 7.6 | 3 | 10.9 | 2.9 |
| Nov | 1° / -10° | 38 | 7.7 | 7.4 | 9.7 | 0.0 |
| Dec | -8° / -20° | 18 | 5.2 | 7 | 9.1 | 0.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 41% of the time across fall.
Chance of precipitation in Fall
Hyesan gets around 151 mm of rain and snow over 23 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 7 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 hours in early September to 9 h 12 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.5 kWh/m².
Hazard calendar for Hyesan
None of Hyesan's seasonal hazards peak in fall. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Hyesan's rainy season runs May–August, when most of the year's rain falls.
Is fall a good time to visit Hyesan?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Hyesan.
What to pack for Hyesan in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Hyesan sees daytime highs around 10°C and nights near -2°C. Pack a warm layer and a heavy coat. About 23 days see rain.
UV index in Hyesan in Fall
Clear-sky midday UV across fall averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Hyesan peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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) | 2 | 2 | 4 | 6 | 7 | 7 | 6 | 9 | 7 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | High | Very high | Very high | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 7 | Very high |
| Jun | 7 | Very high |
| Jul | 6 | High |
| Aug | 9 | Very high |
| Sep | 7 | Very high |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Air quality in Hyesan in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Hyesan is worst in March — around 36 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (August, 15 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) | 28 | 29 | 36 | 34 | 29 | 22 | 18 | 15 | 18 | 26 | 23 | 25 |
| Level | Moderate | Moderate | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 28 | Moderate |
| Feb | 29 | Moderate |
| Mar | 36 | Poor |
| Apr | 34 | Moderate |
| May | 29 | Moderate |
| Jun | 22 | Moderate |
| Jul | 18 | Moderate |
| Aug | 15 | Moderate |
| Sep | 18 | Moderate |
| Oct | 26 | Moderate |
| Nov | 23 | Moderate |
| Dec | 25 | Moderate |
Where is Hyesan?
Hyesan sits at 41.4°N, 128.2°E, 709 m above sea level, in North Korea. The nearest listed city is Hyesan-dong, 1.0 km away.
Topography around Hyesan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hyesan.
Within 3 km, the terrain around Hyesan has significant variations in elevation — a maximum elevation change of 366 m around an average of 790 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 990 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,277 m.
The land around Hyesan is covered by cropland (33%), artificial surfaces (27%) and trees (22%) within 3 km, trees (48%) and grassland (28%) within 16 km, and trees (85%) 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 Hyesan (41.4017°, 128.1778°, elevation 709 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.