Hyesan weather in May

In May, Hyesan sees average daytime highs of 16°C and overnight lows near 5°C, with 95 mm of precipitation across 14.9 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 14°C in the first days to 18°C by the end. The sky is clear or mostly clear about 24% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of May to 14 h 42 min by month's end. Set against the rest of the year, May is Hyesan's 9th-clearest and 3rd-windiest month. For the whole year in context, see Hyesan's year-round climate.

Daytime high
16°
5th warmest
Overnight low
8th coldest
Precipitation
95 mm
14.9 wet days
Daylight
14 h 18 min
5:14 AM – 7:33 PM
Cloud cover
63%
9th clearest
Wind
8 km/h
3rd windiest
Solar energy
5.68 kWh/m²
Travel score
4.5
out of 10

Hyesan is city in North Korea.

Density
696/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 14°C in the first days to 18°C by the end.

A typical May day in Hyesan reaches about 16°C in the afternoon and slips back to 5°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 22°C. Set against its neighbours, May runs about 7°C warmer than April and about 4°C cooler than June.

10°20°151015202531
Avg high (°C)Avg low (°C)
1142
2142
3142
4142
5143
6153
7153
8153
9153
10154
11154
12164
13164
14164
15164
16165
17165
18175
19175
20175
21175
22176
23176
24186
25186
26186
27186
28187
29187
30187
31197

How May really feels in Hyesan

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 4 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
4
wind chill below the day's low

The story in May is cold — wind chill drags the overnight "feels like" below the raw low.

Hyesan weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-10° / -22°113.259.40.0
Feb-6° / -19°184.66.110.30.0
Mar / -11°337.98.511.70.0
Apr10° / -2°5610.57.113.12.0
May16° / 9514.9214.34.5
Jun20° / 10°9715.5014.95.4
Jul23° / 14°16417.3014.75.6
Aug23° / 14°13614.2013.76.0
Sep18° / 717.90.112.36.1
Oct11° / -1°437.6310.92.9
Nov / -10°387.77.49.70.0
Dec-8° / -20°185.279.10.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24456
34357
44357
54456
64456
74357
84357
94456
104357
114357
124357
134357
144357
154357
164357
174258
184258
194258
204357
214357
224357
234357
244357
254456
264456
274456
284456
294456
304456
314357

Chance of precipitation in May

Any precipitationSnow

Hyesan gets around 95 mm of rain and snow over 14.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 47% and peaks near 50% on the wettest days, and about 2 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14216
24315
34314
44413
54413
64512
74511
84611
94610
104710
11479
12478
13487
14487
15496
16495
17505
18504
19504
20503
21503
22503
23502
24492
25492
26492
27482
28481
29481
30481
31471

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
15991
16991
17991
18991
19991
20991
21991
22991
23991
241000
251000
261000
271000
281000
29991
30991
31991

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 48 min at the start of May to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 5:32 AM to 5:03 AM, and sunset from 7:17 PM to 7:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:327:17
213.85:307:18
313.85:297:19
413.95:287:20
513.95:267:22
614.05:257:23
714.05:247:24
814.05:237:25
914.15:227:26
1014.15:207:27
1114.15:197:28
1214.25:187:29
1314.25:177:30
1414.35:167:31
1514.35:157:32
1614.35:147:33
1714.45:137:34
1814.45:127:35
1914.45:117:36
2014.45:107:37
2114.55:097:38
2214.55:097:39
2314.55:087:40
2414.65:077:41
2514.65:067:42
2614.65:067:43
2714.65:057:44
2814.75:047:44
2914.75:047:45
3014.75:037:46
3114.75:037:47

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.68 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.21 kWh/m² to a high of 5.68 kWh/m² in May across the year — May's 5.68 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.9Bright
315.9Bright
Planning a trip in May

Hazard calendar for Hyesan

In seasonPeak

In May, Hyesan sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Hyesan's rainy season runs May–August, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Hyesan?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.5
Sightseeing
5th-best month of the year
0.8
Beach & pool
5th-best month of the year

May is a reasonable time to visit Hyesan for sightseeing.

What to pack for Hyesan in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Hyesan sees daytime highs around 16°C and nights near 5°C. Pack rain gear. Worth having: a warm layer and sun protection. About 15 days see rain.

rain geara warm layersun protection

UV index in Hyesan in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks 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 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highModerateLowAug 18UV 8Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr6High
May7Very high
Jun7Very high
Jul6High
Aug9Very high
Sep7Very high
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Hyesan in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateMar 2136 µg/m³Aug 1615 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb29Moderate
Mar36Poor
Apr34Moderate
May29Moderate
Jun22Moderate
Jul18Moderate
Aug15Moderate
Sep18Moderate
Oct26Moderate
Nov23Moderate
Dec25Moderate
Location & terrain

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.

Kapsan-ŭpSamjiyŏn-ŭpYŏnsa-ŭpChangam-ch’onKiljuMyŏngch’ŏnHwasŏng

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.

3 km
366 m
16 km
990 m
80 km
2,277 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Hyesan-dong 1.0 km · Kapsan-ŭp 36 km · Samjiyŏn-ŭp 46 km · Yŏnsa-ŭp 89 km · Changam-ch’on 102 km · Kilju 108 km · Myŏngch’ŏn 111 km · Hwasŏng 111 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).