Ansan weather in March

In March, Ansan sees average daytime highs of 7°C and overnight lows near 3°C, with 42 mm of precipitation across 6.1 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 5°C in the first days to 9°C by the end. The sky is clear or mostly clear about 48% 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 Ansan's 2nd-clearest and 4th-windiest month. For the whole year in context, see Ansan's year-round climate.

Daytime high
9th warmest
Overnight low
4th coldest
Precipitation
42 mm
6.1 wet days
Daylight
11 h 42 min
6:51 AM – 6:33 PM
Cloud cover
47%
2nd clearest
Wind
15 km/h
4th windiest
Solar energy
4.7 kWh/m²
Travel score
1.1
out of 10

Ansan is city in South Korea.

Density
4,172/km²
people per km²
Founded
1986

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

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 5°C in the first days to 9°C by the end.

A typical March day in Ansan reaches about 7°C in the afternoon and slips back to 3°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 11°C. Set against its neighbours, March runs about 4°C warmer than February and about 5°C cooler than April.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
151
251
361
461
561
661
761
862
962
1062
1172
1272
1372
1472
1573
1673
1773
1883
1983
2083
2183
2284
2384
2484
2584
2694
2794
2895
2995
3095
3195

How March really feels in Ansan

Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 22 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
22
wind chill below the day's low

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

Ansan weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°234.12.59.70.0
Feb / -1°304.31.310.60.0
Mar / 426.10.911.71.1
Apr12° / 797.3012.93.6
May17° / 13°1047.70145.9
Jun22° / 18°1277.6014.56.8
Jul25° / 22°29814.4014.36.0
Aug27° / 23°23912.8013.46.2
Sep24° / 19°1277.3012.37.3
Oct18° / 13°625.60116.7
Nov11° / 578.20.3103.1
Dec / -0°285.81.89.50.2

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 13% of March, with mostly cloudy or overcast conditions the remaining 39%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25842
35842
45842
55842
65941
75941
86139
96139
106139
116139
126238
136238
146238
156238
166238
176337
186238
196238
206238
216238
226238
236238
246139
256139
266139
276238
286238
296238
306139
316139

Chance of precipitation in March

Any precipitationSnow

Ansan gets around 42 mm of rain and snow over 6.1 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 20% and peaks near 21% on the wettest days, and about 1 day brings snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1204
2204
3204
4204
5204
6204
7204
8194
9194
10193
11193
12193
13193
14193
15193
16193
17192
18192
19202
20202
21202
22202
23202
24202
25212
26212
27212
28211
29211
30211
31211

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.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in March

Winds average 15 km/h in March.

Across March, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

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 7:13 AM to 6:28 AM, and sunset from 6:19 PM to 6:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.17:136:19
211.17:126:20
311.27:106:21
411.27:096:22
511.37:076:23
611.37:066:24
711.37:056:25
811.47:036:26
911.47:026:27
1011.57:006:28
1111.56:596:29
1211.56:576:30
1311.66:566:31
1411.66:546:32
1511.76:536:33
1611.76:516:33
1711.76:506:34
1811.86:486:35
1911.86:476:36
2011.96:456:37
2111.96:446:38
2211.96:426:39
2312.06:416:40
2412.06:396:41
2512.16:376:42
2612.16:366:43
2712.26:346:44
2812.26:336:44
2912.26:316:45
3012.36:306:46
3112.36:286:47

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.7 kWh/m².

For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 5.83 kWh/m² in May across the year — March's 4.7 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.2Bright
44.2Bright
54.2Bright
64.3Bright
74.3Bright
84.4Bright
94.4Bright
104.5Bright
114.5Bright
124.5Bright
134.6Bright
144.6Bright
154.7Bright
164.7Bright
174.8Bright
184.8Bright
194.8Bright
204.9Bright
214.9Bright
224.9Bright
235.0Bright
245.0Bright
255.0Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.2Bright
315.2Bright
Planning a trip in March

Hazard calendar for Ansan

In seasonPeak

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

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

Ansan'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 March a good time to visit Ansan?

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

1.1
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 Ansan.

What to pack for Ansan in March

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

In March, Ansan sees daytime highs around 7°C and nights near 3°C. Pack a warm layer. Worth having: a heavy coat and sun protection. About 6 days see rain.

a warm layera heavy coatsun protection

Sea temperature near Ansan in March

The nearest coast averages about 5°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in August at about 24°C and coldest in February near 4°C.

It's comfortable for a long swim from Jul 11 to Oct 13 — 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
Jun17Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct20Cool
Nov15Bracing
Dec10Bracing

UV index in Ansan in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ansan peaks around July 23 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 23UV 8Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May6High
Jun7High
Jul8Very high
Aug8Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Ansan 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 Ansan is worst in March — around 160 µg/m³ PM2.5 (very unhealthy), about 2.0× the cleanest month (August, 81 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyUnhealthyMar 13158 µg/m³Aug 1282 µg/m³
PM2.5 (µg/m³)Level
Jan145Unhealthy
Feb149Unhealthy
Mar160Very unhealthy
Apr127Unhealthy
May111Unhealthy
Jun98Unhealthy
Jul88Unhealthy
Aug81Unhealthy
Sep110Unhealthy
Oct132Unhealthy
Nov142Unhealthy
Dec133Unhealthy
Location & terrain

Where is Ansan?

Ansan sits at 37.3°N, 126.8°E, 15 m above sea level, in South Korea. The nearest listed city is Anyang-si, 12 km away.

Topography around Ansan

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

Within 3 km, the terrain around Ansan has only modest variations in elevation — a maximum elevation change of 198 m around an average of 24 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 470 m; within 80 km, large variations in elevation — a maximum elevation change of 1,126 m.

The land around Ansan is covered by artificial surfaces (58%) and trees (33%) within 3 km, trees (36%) and artificial surfaces (32%) within 16 km, and trees (39%) and water (27%) within 80 km.

3 km
198 m
16 km
470 m
80 km
1,126 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
March weather nearby: Anyang-si 12 km · Uiwang 12 km · Gunpo 12 km · Hwaseong-si 13 km · Siheungdong 16 km · Suwon 17 km · Gwangmyeong 18 km · Incheon 18 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 Ansan (37.3236°, 126.8219°, elevation 15 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).