Asan weather in June

In June, Asan sees average daytime highs of 28°C and overnight lows near 18°C, with 121 mm of rain across 8.3 wet days and about 14.5 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 27% of the time in June, and the air most often feels humid.

Daylight stretches from about 14 h 18 min at the start of June to 14 h 30 min by month's end. Set against the rest of the year, June is Asan's 10th-clearest and 11th-windiest month. For the whole year in context, see Asan's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
121 mm
8.3 wet days
Daylight
14 h 30 min
5:17 AM – 7:47 PM
Cloud cover
64%
10th clearest
Wind
8 km/h
11th windiest
Solar energy
5.65 kWh/m²
Travel score
6.4
out of 10

Asan is city in South Chungcheong Province, South Korea.

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical June day in Asan reaches about 28°C in the afternoon and slips back to 18°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°C. Set against its neighbours, June runs about 4°C warmer than May and about 2°C cooler than July.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12615
22716
32716
42716
52716
62716
72717
82717
92717
102817
112817
122818
132818
142818
152818
162818
172818
182818
192819
202819
212819
222819
232819
242819
252820
262820
272820
282820
292820
302820

How June really feels in Asan

Once humidity and wind are folded in, June 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

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

Asan weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°214.12.59.80.0
Feb / -3°284.21.710.60.5
Mar11° / 436.11.211.73.3
Apr18° / 717012.96.3
May24° / 13°807.3013.97.3
Jun28° / 18°1218.3014.56.4
Jul29° / 22°25016014.34.5
Aug30° / 22°23415013.44.5
Sep26° / 17°1378.1012.27.0
Oct20° / 10°565.10117.2
Nov12° / 456.20.3103.8
Dec / -3°234.929.50.3

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 14% of June, with mostly cloudy or overcast conditions the remaining 59%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15149
25050
35050
44951
54852
64852
74654
84654
94654
104555
114555
124555
134456
144456
154258
164258
174258
184159
194159
204060
213763
223763
233664
243565
253466
263367
273169
283070
293070
302971

Chance of precipitation in June

Any precipitation

Asan gets around 121 mm of rain over 8.3 wet days in June. 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 44% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
120
220
321
421
522
622
722
823
923
1023
1123
1224
1324
1424
1525
1625
1726
1827
1928
2029
2130
2231
2333
2435
2537
2639
2740
2842
2943
3044

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the humid band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 25% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
147341810
244342020
341352220
438352430
535362630
632362840
729363050
826363251
923353561
1020353781
1118343891
12153340101
13133241121
14123142141
15103043161
1692843181
1782643212
1872542232
1972342263
2062141284
2151940315
2251739336
2341537358
24414353810
25312333912
26310314114
2739294217
2828274419
2927254421
3026234524

Wind in June

Winds average 8 km/h in June.

Across June, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
299calm
309calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 18 min at the start of June to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 5:20 AM to 5:20 AM, and sunset from 7:39 PM to 7:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.35:207:39
214.35:197:40
314.45:197:41
414.45:197:41
514.45:187:42
614.45:187:42
714.45:187:43
814.45:187:44
914.45:187:44
1014.55:177:45
1114.55:177:45
1214.55:177:46
1314.55:177:46
1414.55:177:47
1514.55:177:47
1614.55:177:47
1714.55:177:48
1814.55:177:48
1914.55:177:48
2014.55:177:49
2114.55:187:49
2214.55:187:49
2314.55:187:49
2414.55:187:50
2514.55:197:50
2614.55:197:50
2714.55:197:50
2814.55:197:50
2914.55:207:50
3014.55:207:50

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.65 kWh/m².

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 5.9 kWh/m² in May across the year — June's 5.65 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.0Intense
76.0Intense
86.0Intense
96.0Bright
106.0Bright
115.9Bright
125.9Bright
135.8Bright
145.8Bright
155.8Bright
165.7Bright
175.7Bright
185.6Bright
195.5Bright
205.5Bright
215.4Bright
225.3Bright
235.2Bright
245.2Bright
255.1Bright
265.0Bright
274.9Bright
284.9Bright
294.8Bright
304.8Bright
Planning a trip in June

Hazard calendar for Asan

In seasonPeak

In June, Asan sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

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

Asan's rainy season runs June–September, 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 June a good time to visit Asan?

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

6.4
Sightseeing
4th-best month of the year
6.8
Beach & pool
1st-best month of the year

June is a reasonable time to visit Asan for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Asan in June

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

In June, Asan sees daytime highs around 28°C and nights near 18°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Asan in June

The nearest coast averages about 16°C in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 51 km away) is warmest in August at about 23°C and coldest in February near 4°C.

It's comfortable for a long swim from Jul 12 to Oct 14 — about 3.1 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan6Bracing
Feb4Bracing
Mar5Bracing
Apr8Bracing
May12Bracing
Jun16Cool
Jul21Refreshing
Aug23Refreshing
Sep23Refreshing
Oct20Cool
Nov15Cool
Dec10Bracing

UV index in Asan in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Asan peaks around August 13 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateAug 13UV 8Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun7High
Jul8Very high
Aug8Very high
Sep7Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Asan in June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.

Air quality in Asan is worst in March — around 92 µg/m³ PM2.5 (unhealthy), about 2.0× the cleanest month (July, 46 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyMar 1391 µg/m³Jul 2246 µg/m³
PM2.5 (µg/m³)Level
Jan83Unhealthy
Feb85Unhealthy
Mar92Unhealthy
Apr75Unhealthy
May62Unhealthy
Jun57Unhealthy
Jul46Poor
Aug47Poor
Sep61Unhealthy
Oct74Unhealthy
Nov79Unhealthy
Dec73Unhealthy
Location & terrain

Where is Asan?

Asan sits at 36.8°N, 127.0°E, 27 m above sea level, in South Korea. The nearest listed city is Cheonan, 13 km away.

AnseongTangjinHongseong

Topography around Asan

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

Within 3 km, the terrain around Asan has only modest variations in elevation — a maximum elevation change of 178 m around an average of 30 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 689 m; within 80 km, large variations in elevation — a maximum elevation change of 1,006 m.

The land around Asan is covered by artificial surfaces (35%), cropland (34%) and trees (21%) within 3 km, trees (47%) and cropland (26%) within 16 km, and trees (49%) and cropland (22%) within 80 km.

3 km
178 m
16 km
689 m
80 km
1,006 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Cheonan 13 km · Seonghwan 19 km · Yesan 19 km · Pyeongtaek 25 km · Sejong 33 km · Anseong 35 km · Tangjin 36 km · Hongseong 36 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 Asan (36.7836°, 127.0042°, elevation 27 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).