Koesan weather in March

In March, Koesan sees average daytime highs of 11°C and overnight lows near 0°C, with 54 mm of precipitation across 7.1 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 8°C in the first days to 14°C by the end. The sky is clear or mostly clear about 39% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of March to 12 h 18 min by month's end. Set against the rest of the year, March is Koesan's 7th-clearest and 2nd-windiest month. For the whole year in context, see Koesan's year-round climate.

Daytime high: 11°; 9th warmest
Overnight low: 0°; 4th coldest
Precipitation: 54 mm; 7.1 wet days
Daylight: 11 h 42 min; 6:47 AM – 6:30 PM
Cloud cover: 53%; 7th clearest
Wind: 10 km/h; 2nd windiest
Solar energy: 4.62 kWh/m²
Travel score: 3.0; out of 10

← February Koesan year-round climate April →Best places to visit in March

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

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 8°C in the first days to 14°C by the end.

A typical March day in Koesan reaches about 11°C in the afternoon and slips back to 0°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 17°C. Set against its neighbours, March runs about 6°C warmer than February and about 7°C cooler than April.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	8	8	8	9	9	9	9	9	10	10	10	10	11	11	11	11	11	12	12	12	12	12	13	13	13	13	13	14	14	14	14
Avg low (°C)	-2	-2	-1	-1	-1	-1	-1	-1	-1	0	0	0	0	0	0	0	1	1	1	1	1	1	2	2	2	2	2	2	3	3	3

	Avg high (°C)	Avg low (°C)
1	8	-2
2	8	-2
3	8	-1
4	9	-1
5	9	-1
6	9	-1
7	9	-1
8	9	-1
9	10	-1
10	10	0
11	10	0
12	10	0
13	11	0
14	11	0
15	11	0
16	11	0
17	11	1
18	12	1
19	12	1
20	12	1
21	12	1
22	12	1
23	13	2
24	13	2
25	13	2
26	13	2
27	13	2
28	14	2
29	14	3
30	14	3
31	14	3

How March really feels in Koesan

Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 30 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Koesan weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	3° / -6°	23	4.7	3.3	9.8	0.0
Feb	5° / -4°	33	4.6	2.1	10.6	0.4
Mar	11° / 0°	54	7.1	2.1	11.7	3.0
Apr	18° / 6°	83	7.7	0.2	12.9	6.1
May	23° / 12°	94	8	0	13.9	7.1
Jun	27° / 17°	125	8.8	0	14.5	6.5
Jul	28° / 21°	258	16.7	0	14.3	4.8
Aug	29° / 22°	219	15.5	0	13.4	4.8
Sep	25° / 16°	139	8.9	0	12.2	6.9
Oct	19° / 9°	58	5.2	0	11	7.0
Nov	12° / 2°	44	6.6	0.4	10	3.4
Dec	5° / -4°	26	4.6	2.1	9.5	0.2

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 16% of March, with mostly cloudy or overcast conditions the remaining 45%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	53	53	53	54	54	54	55	55	55	56	56	56	56	56	56	57	57	56	56	56	55	55	54	54	54	54	54	54	54	55	56
Cloudier (%)	47	47	47	46	46	46	45	45	45	44	44	44	44	44	44	43	43	44	44	44	45	45	46	46	46	46	46	46	46	45	44

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	54	46
5	54	46
6	54	46
7	55	45
8	55	45
9	55	45
10	56	44
11	56	44
12	56	44
13	56	44
14	56	44
15	56	44
16	57	43
17	57	43
18	56	44
19	56	44
20	56	44
21	55	45
22	55	45
23	54	46
24	54	46
25	54	46
26	54	46
27	54	46
28	54	46
29	54	46
30	55	45
31	56	44

Chance of precipitation in March

Any precipitationSnow

Koesan gets around 54 mm of rain and snow over 7.1 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 23% and peaks near 24% on the wettest days, and about 2 days bring snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	23	24	24	24	24	23	23	23	23	23	22	22	22	22	22	22	22	22	22	22	23	23	23	23	23	23	23	23	23	23	23
Snow chance (%)	11	11	11	11	11	11	10	10	9	9	8	8	7	7	6	6	5	5	5	5	4	4	4	4	3	3	3	3	3	2	2

	Rain chance (%)	Snow chance (%)
1	23	11
2	24	11
3	24	11
4	24	11
5	24	11
6	23	11
7	23	10
8	23	10
9	23	9
10	23	9
11	22	8
12	22	8
13	22	7
14	22	7
15	22	6
16	22	6
17	22	5
18	22	5
19	22	5
20	22	5
21	23	4
22	23	4
23	23	4
24	23	4
25	23	3
26	23	3
27	23	3
28	23	3
29	23	3
30	23	2
31	23	2

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

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

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in March

Winds average 10 km/h in March.

Across March, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	10	calm
2	10	calm
3	10	calm
4	10	calm
5	10	calm
6	10	calm
7	10	calm
8	10	calm
9	10	calm
10	10	calm
11	10	calm
12	10	calm
13	10	calm
14	10	calm
15	10	calm
16	10	calm
17	10	calm
18	10	calm
19	10	calm
20	10	calm
21	10	calm
22	10	calm
23	10	calm
24	10	calm
25	10	calm
26	10	calm
27	10	calm
28	10	calm
29	10	calm
30	10	calm
31	10	calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 06 min at the start of March to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over March. Sunrise moves from 7:09 AM to 6:24 AM, and sunset from 6:16 PM to 6:43 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	11.1	11.2	11.2	11.2	11.3	11.3	11.4	11.4	11.4	11.5	11.5	11.5	11.6	11.6	11.7	11.7	11.7	11.8	11.8	11.9	11.9	11.9	12.0	12.0	12.1	12.1	12.2	12.2	12.2	12.3	12.3
Sunrise (AM)	7:09	7:07	7:06	7:04	7:03	7:02	7:00	6:59	6:57	6:56	6:55	6:53	6:52	6:50	6:49	6:47	6:46	6:44	6:43	6:41	6:40	6:38	6:37	6:35	6:34	6:32	6:31	6:29	6:27	6:26	6:24
Sunset (PM)	6:16	6:17	6:18	6:18	6:19	6:20	6:21	6:22	6:23	6:24	6:25	6:26	6:27	6:28	6:29	6:30	6:31	6:32	6:32	6:33	6:34	6:35	6:36	6:37	6:38	6:39	6:40	6:40	6:41	6:42	6:43

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.1	7:09	6:16
2	11.2	7:07	6:17
3	11.2	7:06	6:18
4	11.2	7:04	6:18
5	11.3	7:03	6:19
6	11.3	7:02	6:20
7	11.4	7:00	6:21
8	11.4	6:59	6:22
9	11.4	6:57	6:23
10	11.5	6:56	6:24
11	11.5	6:55	6:25
12	11.5	6:53	6:26
13	11.6	6:52	6:27
14	11.6	6:50	6:28
15	11.7	6:49	6:29
16	11.7	6:47	6:30
17	11.7	6:46	6:31
18	11.8	6:44	6:32
19	11.8	6:43	6:32
20	11.9	6:41	6:33
21	11.9	6:40	6:34
22	11.9	6:38	6:35
23	12.0	6:37	6:36
24	12.0	6:35	6:37
25	12.1	6:34	6:38
26	12.1	6:32	6:39
27	12.2	6:31	6:40
28	12.2	6:29	6:40
29	12.2	6:27	6:41
30	12.3	6:26	6:42
31	12.3	6:24	6:43

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.62 kWh/m².

For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 5.83 kWh/m² in May across the year — March's 4.62 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	4.1	4.1	4.1	4.2	4.2	4.2	4.3	4.3	4.4	4.4	4.4	4.5	4.5	4.5	4.6	4.6	4.7	4.7	4.7	4.8	4.8	4.8	4.9	4.9	4.9	5.0	5.0	5.0	5.1	5.1	5.1
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.1	Bright
2	4.1	Bright
3	4.1	Bright
4	4.2	Bright
5	4.2	Bright
6	4.2	Bright
7	4.3	Bright
8	4.3	Bright
9	4.4	Bright
10	4.4	Bright
11	4.4	Bright
12	4.5	Bright
13	4.5	Bright
14	4.5	Bright
15	4.6	Bright
16	4.6	Bright
17	4.7	Bright
18	4.7	Bright
19	4.7	Bright
20	4.8	Bright
21	4.8	Bright
22	4.8	Bright
23	4.9	Bright
24	4.9	Bright
25	4.9	Bright
26	5.0	Bright
27	5.0	Bright
28	5.0	Bright
29	5.1	Bright
30	5.1	Bright
31	5.1	Bright

Planning a trip in March

Hazard calendar for Koesan

In seasonPeak

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

Koesan's rainy season runs June–September, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is March a good time to visit Koesan?

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

3.0

Sightseeing

9th-best month of the year

0.0

Beach & pool

9th-best month of the year

March is a weaker month for outdoor sightseeing in Koesan.

What to pack for Koesan in March

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

In March, Koesan sees daytime highs around 11°C and nights near 0°C. Pack a warm layer. Worth having: sun protection. About 7 days see rain.

a warm layersun protection

UV index in Koesan in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks 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 Koesan peaks around August 14 at about 9 (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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	3	5	6	7	7	8	9	8	5	3	2
Level	Low	Moderate	Moderate	High	High	Very high	Very high	Very high	Very high	High	Moderate	Low

	UV index (midday)	Level
Jan	2	Low
Feb	3	Moderate
Mar	5	Moderate
Apr	6	High
May	7	High
Jun	7	Very high
Jul	8	Very high
Aug	9	Very high
Sep	8	Very high
Oct	5	High
Nov	3	Moderate
Dec	2	Low

Air quality in Koesan in March

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Koesan is worst in March — around 80 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (July, 45 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)	69	72	80	65	58	54	45	45	56	67	72	65
Level	Unhealthy	Unhealthy	Unhealthy	Unhealthy	Unhealthy	Poor	Poor	Poor	Unhealthy	Unhealthy	Unhealthy	Unhealthy

	PM2.5 (µg/m³)	Level
Jan	69	Unhealthy
Feb	72	Unhealthy
Mar	80	Unhealthy
Apr	65	Unhealthy
May	58	Unhealthy
Jun	54	Poor
Jul	45	Poor
Aug	45	Poor
Sep	56	Unhealthy
Oct	67	Unhealthy
Nov	72	Unhealthy
Dec	65	Unhealthy

Location & terrain

Where is Koesan?

Koesan sits at 36.8°N, 127.8°E, 116 m above sea level, in South Korea. The nearest listed city is Jungpyong, 19 km away.

Topography around Koesan

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

Within 3 km, the terrain around Koesan has significant variations in elevation — a maximum elevation change of 298 m around an average of 173 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 866 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,408 m.

The land around Koesan is covered by trees (58%) within 3 km, trees (74%) within 16 km, and trees (72%) within 80 km.

3 km

298 m

trees 58%

16 km

866 m

trees 74%

80 km

1,408 m

trees 72%

treesgrasslandcroplandartificial surfacesbare terrainwater

← February Koesan year-round climate April →Best places to visit in March

March weather nearby: Jungpyong 19 km · Chungju 22 km · Chinch'ŏn 32 km · Cheongju-si 33 km · Mungyeong 43 km · Sejong 51 km · Anseong 52 km · Sangju 55 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

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 Koesan (36.8108°, 127.7947°, elevation 116 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).

	Avg high (°C)	Avg low (°C)
1	8	-2
2	8	-2
3	8	-1
4	9	-1
5	9	-1
6	9	-1
7	9	-1
8	9	-1
9	10	-1
10	10	0
11	10	0
12	10	0
13	11	0
14	11	0
15	11	0
16	11	0
17	11	1
18	12	1
19	12	1
20	12	1
21	12	1
22	12	1
23	13	2
24	13	2
25	13	2
26	13	2
27	13	2
28	14	2
29	14	3
30	14	3
31	14	3

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	54	46
5	54	46
6	54	46
7	55	45
8	55	45
9	55	45
10	56	44
11	56	44
12	56	44
13	56	44
14	56	44
15	56	44
16	57	43
17	57	43
18	56	44
19	56	44
20	56	44
21	55	45
22	55	45
23	54	46
24	54	46
25	54	46
26	54	46
27	54	46
28	54	46
29	54	46
30	55	45
31	56	44

	Rain chance (%)	Snow chance (%)
1	23	11
2	24	11
3	24	11
4	24	11
5	24	11
6	23	11
7	23	10
8	23	10
9	23	9
10	23	9
11	22	8
12	22	8
13	22	7
14	22	7
15	22	6
16	22	6
17	22	5
18	22	5
19	22	5
20	22	5
21	23	4
22	23	4
23	23	4
24	23	4
25	23	3
26	23	3
27	23	3
28	23	3
29	23	3
30	23	2
31	23	2

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	8	-2
2	8	-2
3	8	-1
4	9	-1
5	9	-1
6	9	-1
7	9	-1
8	9	-1
9	10	-1
10	10	0
11	10	0
12	10	0
13	11	0
14	11	0
15	11	0
16	11	0
17	11	1
18	12	1
19	12	1
20	12	1
21	12	1
22	12	1
23	13	2
24	13	2
25	13	2
26	13	2
27	13	2
28	14	2
29	14	3
30	14	3
31	14	3

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	54	46
5	54	46
6	54	46
7	55	45
8	55	45
9	55	45
10	56	44
11	56	44
12	56	44
13	56	44
14	56	44
15	56	44
16	57	43
17	57	43
18	56	44
19	56	44
20	56	44
21	55	45
22	55	45
23	54	46
24	54	46
25	54	46
26	54	46
27	54	46
28	54	46
29	54	46
30	55	45
31	56	44

	Rain chance (%)	Snow chance (%)
1	23	11
2	24	11
3	24	11
4	24	11
5	24	11
6	23	11
7	23	10
8	23	10
9	23	9
10	23	9
11	22	8
12	22	8
13	22	7
14	22	7
15	22	6
16	22	6
17	22	5
18	22	5
19	22	5
20	22	5
21	23	4
22	23	4
23	23	4
24	23	4
25	23	3
26	23	3
27	23	3
28	23	3
29	23	3
30	23	2
31	23	2

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	8	-2
2	8	-2
3	8	-1
4	9	-1
5	9	-1
6	9	-1
7	9	-1
8	9	-1
9	10	-1
10	10	0
11	10	0
12	10	0
13	11	0
14	11	0
15	11	0
16	11	0
17	11	1
18	12	1
19	12	1
20	12	1
21	12	1
22	12	1
23	13	2
24	13	2
25	13	2
26	13	2
27	13	2
28	14	2
29	14	3
30	14	3
31	14	3

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	54	46
5	54	46
6	54	46
7	55	45
8	55	45
9	55	45
10	56	44
11	56	44
12	56	44
13	56	44
14	56	44
15	56	44
16	57	43
17	57	43
18	56	44
19	56	44
20	56	44
21	55	45
22	55	45
23	54	46
24	54	46
25	54	46
26	54	46
27	54	46
28	54	46
29	54	46
30	55	45
31	56	44

	Rain chance (%)	Snow chance (%)
1	23	11
2	24	11
3	24	11
4	24	11
5	24	11
6	23	11
7	23	10
8	23	10
9	23	9
10	23	9
11	22	8
12	22	8
13	22	7
14	22	7
15	22	6
16	22	6
17	22	5
18	22	5
19	22	5
20	22	5
21	23	4
22	23	4
23	23	4
24	23	4
25	23	3
26	23	3
27	23	3
28	23	3
29	23	3
30	23	2
31	23	2

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100