Hwacheon weather in May

In May, Hwacheon sees average daytime highs of 22°C and overnight lows near 10°C, with 100 mm of rain across 8.8 wet days and about 14 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 24°C by the end. The sky is clear or mostly clear about 36% 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 Hwacheon's 8th-clearest and 5th-windiest month. For the whole year in context, see Hwacheon's year-round climate.

Daytime high
22°
5th warmest
Overnight low
10°
8th coldest
Rainfall
100 mm
8.8 wet days
Daylight
14 h 06 min
5:24 AM – 7:27 PM
Cloud cover
56%
8th clearest
Wind
7 km/h
5th windiest
Solar energy
5.68 kWh/m²
Travel score
6.8
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 24°C by the end.

A typical May day in Hwacheon reaches about 22°C in the afternoon and slips back to 10°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1198
2208
3208
4209
5209
6209
7209
8209
9219
102110
112110
122110
132110
142110
152110
162110
172211
182211
192211
202211
212211
222211
232312
242312
252312
262312
272312
282313
292413
302413
312413

How May really feels in Hwacheon

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.

Hwacheon weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -9°224.149.70.0
Feb / -6°274.83.510.50.1
Mar10° / -1°4372.911.72.2
Apr16° / 748.30.5135.4
May22° / 10°1008.80146.8
Jun25° / 16°12310.3014.66.6
Jul27° / 20°31617.4014.45.2
Aug28° / 20°27316.2013.55.3
Sep24° / 15°1268.4012.37.0
Oct18° / 555.70116.5
Nov10° / 487.21.29.92.4
Dec / -6°265.23.79.40.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45050
54951
64951
75050
84951
94951
104951
114951
125050
134951
144852
154951
164951
174951
185050
195050
204951
215050
225149
235050
245050
255149
265149
275149
285050
295149
305050
314951

Chance of precipitation in May

Any precipitation

Hwacheon gets around 100 mm of rain over 8.8 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
129
229
329
429
529
630
730
830
930
1030
1130
1230
1330
1430
1530
1630
1729
1829
1929
2029
2128
2228
2327
2427
2526
2626
2725
2825
2924
3024
3124

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 84% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19541
29541
39541
49541
59451
69451
79451
89361
99361
109361
119370
129370
139280
149190
1590100
1689101
1788111
1886131
1985141
2083152
2182162
2281172
2378193
2477203
2574224
2672244
2769265
2866286
2964306
3061327
3158348

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
316calm

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 5:40 AM to 5:14 AM, and sunset from 7:13 PM to 7:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:407:13
213.65:387:14
313.65:377:15
413.75:367:16
513.75:357:17
613.75:347:18
713.85:337:19
813.85:327:20
913.85:307:21
1013.95:297:22
1113.95:287:23
1213.95:277:23
1314.05:267:24
1414.05:267:25
1514.05:257:26
1614.15:247:27
1714.15:237:28
1814.15:227:29
1914.15:217:30
2014.25:207:31
2114.25:207:31
2214.25:197:32
2314.25:187:33
2414.35:187:34
2514.35:177:35
2614.35:167:36
2714.35:167:36
2814.45:157:37
2914.45:157:38
3014.45:147:39
3114.45:147:39

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 2.32 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
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.7Bright
195.7Bright
205.7Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Hazard calendar for Hwacheon

In seasonPeak

None of Hwacheon's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Hwacheon's rainy season runs July–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 Hwacheon?

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

6.8
Sightseeing
2nd-best month of the year
4.5
Beach & pool
5th-best month of the year

May is a reasonable time to visit Hwacheon for sightseeing.

What to pack for Hwacheon in May

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

In May, Hwacheon sees daytime highs around 22°C and nights near 10°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

UV index in Hwacheon in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hwacheon peaks around August 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 17UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May6High
Jun7Very high
Jul7Very high
Aug9Very high
Sep8Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Hwacheon 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 Hwacheon is worst in March — around 67 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (August, 37 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorPoorMar 1967 µg/m³Aug 1237 µg/m³
PM2.5 (µg/m³)Level
Jan61Unhealthy
Feb59Unhealthy
Mar67Unhealthy
Apr63Unhealthy
May53Poor
Jun46Poor
Jul38Poor
Aug37Poor
Sep40Poor
Oct52Poor
Nov56Unhealthy
Dec51Poor
Location & terrain

Where is Hwacheon?

Hwacheon sits at 38.1°N, 127.7°E, 115 m above sea level, in South Korea. The nearest listed city is Yanggu, 25 km away.

GapyeongCheorwonHongch’ŏnHwadoYangjuHoeyang

Topography around Hwacheon

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

Within 3 km, the terrain around Hwacheon has significant variations in elevation — a maximum elevation change of 494 m around an average of 210 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,108 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,646 m.

The land around Hwacheon is covered by trees (68%) within 3 km, trees (88%) within 16 km, and trees (79%) within 80 km.

3 km
494 m
16 km
1,108 m
80 km
1,646 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Yanggu 25 km · Chuncheon 26 km · Gapyeong 35 km · Cheorwon 44 km · Hongch’ŏn 49 km · Hwado 61 km · Yangju 64 km · Hoeyang 68 km

South Korea travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
220 V · 60 Hz
Prices
≈ 57% of US
price level, 2025
GDP per capita
$36,227
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.5
per 100k, 2023
Road deaths
8.6
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 522
Religion
none 60%Protestant 17%Buddhist 16%Catholic 6%

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 Hwacheon (38.1071°, 127.7063°, elevation 115 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).