Ongjin weather in May

In May, Ongjin sees average daytime highs of 17°C and overnight lows near 12°C, with 90 mm of rain across 6.9 wet days and about 14 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 19°C by the end. The sky is clear or mostly clear about 43% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 24 min by month's end. Set against the rest of the year, May is Ongjin's 5th-clearest and 8th-windiest month. For the whole year in context, see Ongjin's year-round climate.

Daytime high
17°
6th warmest
Overnight low
12°
7th coldest
Rainfall
90 mm
6.9 wet days
Daylight
14 hours
5:34 AM – 7:36 PM
Cloud cover
50%
5th clearest
Wind
14 km/h
8th windiest
Solar energy
6 kWh/m²
Travel score
5.9
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 19°C by the end.

A typical May day in Ongjin reaches about 17°C in the afternoon and slips back to 12°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 19°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11510
21510
31510
41510
51510
61511
71611
81611
91611
101611
111611
121612
131612
141712
151712
161712
171712
181712
191713
201813
211813
221813
231813
241814
251814
261914
271914
281914
291914
301915
311915

How May really feels in Ongjin

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 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
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Ongjin weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°153.63.39.70.0
Feb / -2°213.51.610.50.0
Mar / 274.50.811.70.9
Apr12° / 536.50.1133.5
May17° / 12°906.90145.9
Jun22° / 17°917.5014.66.9
Jul25° / 22°24512.7014.46.3
Aug26° / 23°21511.5013.56.4
Sep23° / 18°906.7012.37.5
Oct18° / 12°405.10116.5
Nov11° / 456.90.59.92.8
Dec / -1°245.63.19.40.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35347
45248
55248
65248
75248
85248
95347
105347
115347
125446
135446
145446
155446
165446
175644
185644
195644
205644
215743
225743
235743
245743
255743
265644
275644
285545
295545
305545
315347

Chance of precipitation in May

Any precipitation

Ongjin gets around 90 mm of rain over 6.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 23% and peaks near 26% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
325
425
526
626
726
826
925
1025
1125
1225
1325
1424
1524
1624
1723
1823
1922
2022
2121
2221
2320
2420
2519
2619
2719
2818
2918
3018
3118

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 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29820
39820
49820
59820
69730
79730
89730
99640
109550
119460
129370
139280
1490100
1588120
1686140
1784160
1881190
1978220
2076240
2172271
2269301
2366331
2462362
2560382
2656413
2753434
2848466
2945478
30414910
31375013

Wind in May

Winds average 14 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:49 AM to 5:24 AM, and sunset from 7:22 PM to 7:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:497:22
213.65:487:23
313.65:477:24
413.75:467:25
513.75:457:26
613.75:437:27
713.85:427:28
813.85:417:29
913.85:407:30
1013.95:397:31
1113.95:387:32
1213.95:377:32
1314.05:367:33
1414.05:357:34
1514.05:347:35
1614.05:347:36
1714.15:337:37
1814.15:327:38
1914.15:317:39
2014.25:307:40
2114.25:307:40
2214.25:297:41
2314.25:287:42
2414.35:277:43
2514.35:277:44
2614.35:267:44
2714.35:267:45
2814.35:257:46
2914.45:257:47
3014.45:247:48
3114.45:247:48

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.05 kWh/m² to a high of 6 kWh/m² in May across the year — May's 6 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
166.0Bright
176.0Bright
186.0Intense
196.0Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in May

Hazard calendar for Ongjin

In seasonPeak

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

Ongjin sits in the Pacific typhoon belt; the season peaks July–October.

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

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

Is May a good time to visit Ongjin?

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

5.9
Sightseeing
6th-best month of the year
1.4
Beach & pool
6th-best month of the year

May is a reasonable time to visit Ongjin for sightseeing.

What to pack for Ongjin in May

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

In May, Ongjin sees daytime highs around 17°C and nights near 12°C. Pack sun protection. Worth having: a warm layer. About 7 days see rain.

sun protectiona warm layer

Sea temperature near Ongjin in May

The nearest coast averages about 12°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 km away) is warmest in August at about 24°C and coldest in February near 5°C.

It's comfortable for a long swim from Jul 7 to Oct 1 — about 2.9 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan6Bracing
Feb5Bracing
Mar5Bracing
Apr8Bracing
May12Bracing
Jun17Cool
Jul21Refreshing
Aug24Refreshing
Sep22Refreshing
Oct18Cool
Nov13Bracing
Dec9Bracing

UV index in Ongjin 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 Ongjin peaks around August 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowAug 11UV 8Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7High
Jun6High
Jul8Very high
Aug8Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Ongjin 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 Ongjin 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).

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyNov 1981 µg/m³Jul 2240 µg/m³
PM2.5 (µg/m³)Level
Jan80Unhealthy
Feb78Unhealthy
Mar80Unhealthy
Apr66Unhealthy
May54Poor
Jun46Poor
Jul40Poor
Aug41Poor
Sep58Unhealthy
Oct72Unhealthy
Nov82Unhealthy
Dec77Unhealthy
Location & terrain

Where is Ongjin?

Ongjin sits at 37.9°N, 125.4°E, 19 m above sea level, in North Korea. The nearest listed city is Kangnyŏng, 13 km away.

ChangyŏnSamch’ŏnSinch’ŏn-ŭpSinwŏn-ŭpCh’ŏngdan-ŭp

Topography around Ongjin

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ongjin.

Within 3 km, the terrain around Ongjin has only modest variations in elevation — a maximum elevation change of 233 m around an average of 36 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 503 m; within 80 km, large variations in elevation — a maximum elevation change of 1,037 m.

The land around Ongjin is covered by cropland (72%) within 3 km, cropland (38%) and trees (33%) within 16 km, and water (52%) and cropland (27%) within 80 km.

3 km
233 m
16 km
503 m
80 km
1,037 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Kangnyŏng 13 km · T’aet’an-ŭp 18 km · Haeju 33 km · Changyŏn 42 km · Samch’ŏn 47 km · Sinch’ŏn-ŭp 48 km · Sinwŏn-ŭp 48 km · Ch’ŏngdan-ŭp 51 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 Ongjin (37.9347°, 125.3619°, elevation 19 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).