Seoul weather in March
In March, Seoul sees average daytime highs of 11°C and overnight lows near 0°C, with 38 mm of precipitation across 6.2 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 8°C in the first days to 14°C by the end. The sky is clear or mostly clear about 42% 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 Seoul's 6th-clearest and 1st-windiest month. For the whole year in context, see Seoul's year-round climate.
- Daytime high
- 11°
- 9th warmest
- Overnight low
- 0°
- 4th coldest
- Precipitation
- 38 mm
- 6.2 wet days
- Daylight
- 11 h 42 min
- 6:51 AM – 6:33 PM
- Cloud cover
- 50%
- 6th clearest
- Wind
- 10 km/h
- 1st windiest
- Solar energy
- 4.67 kWh/m²
- Travel score
- 2.9
- out of 10
Seoul is capital and largest city of South Korea.
- Air quality
- Elevated
- PM2.5 21 µg/m³ · 2020
- Density
- 17,099/km²
- people per km²
- Founded
- 1395
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in March
Highs climb over the month, from about 8°C in the first days to 14°C by the end.
A typical March day in Seoul 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 16°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 | 8 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 14 | 14 | 14 |
| Avg low (°C) | -2 | -2 | -2 | -2 | -2 | -1 | -1 | -1 | -1 | -1 | -1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 8 | -2 |
| 2 | 8 | -2 |
| 3 | 8 | -2 |
| 4 | 8 | -2 |
| 5 | 9 | -2 |
| 6 | 9 | -1 |
| 7 | 9 | -1 |
| 8 | 9 | -1 |
| 9 | 9 | -1 |
| 10 | 10 | -1 |
| 11 | 10 | -1 |
| 12 | 10 | 0 |
| 13 | 10 | 0 |
| 14 | 10 | 0 |
| 15 | 11 | 0 |
| 16 | 11 | 0 |
| 17 | 11 | 0 |
| 18 | 11 | 1 |
| 19 | 11 | 1 |
| 20 | 12 | 1 |
| 21 | 12 | 1 |
| 22 | 12 | 1 |
| 23 | 12 | 1 |
| 24 | 12 | 2 |
| 25 | 13 | 2 |
| 26 | 13 | 2 |
| 27 | 13 | 2 |
| 28 | 13 | 2 |
| 29 | 14 | 2 |
| 30 | 14 | 3 |
| 31 | 14 | 3 |
How March really feels in Seoul
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.
The story in March is cold — wind chill drags the overnight "feels like" below the raw low.
Seoul 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.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 2° / -7° | 20 | 3.6 | 2.2 | 9.7 | 0.0 |
| Feb | 5° / -5° | 25 | 4 | 1.8 | 10.6 | 0.3 |
| Mar | 11° / 0° | 38 | 6.2 | 1 | 11.7 | 2.9 |
| Apr | 18° / 6° | 70 | 7.3 | 0 | 12.9 | 6.0 |
| May | 23° / 12° | 96 | 7.7 | 0 | 14 | 7.2 |
| Jun | 27° / 18° | 126 | 8.8 | 0 | 14.5 | 6.6 |
| Jul | 28° / 22° | 314 | 16.5 | 0 | 14.3 | 4.8 |
| Aug | 29° / 22° | 258 | 15.2 | 0 | 13.4 | 4.8 |
| Sep | 26° / 17° | 124 | 7.6 | 0 | 12.3 | 7.1 |
| Oct | 20° / 9° | 55 | 5.3 | 0 | 11 | 7.1 |
| Nov | 12° / 2° | 47 | 7.1 | 0.4 | 10 | 3.3 |
| Dec | 4° / -5° | 23 | 4.8 | 1.5 | 9.5 | 0.1 |
Cloud cover in March
The sky is clear or mostly clear about 42% 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 42%.
| 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 (%) | 55 | 55 | 55 | 55 | 56 | 56 | 56 | 57 | 57 | 57 | 58 | 59 | 59 | 59 | 59 | 59 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 59 | 59 | 59 | 59 | 59 | 58 | 58 | 57 |
| Cloudier (%) | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 43 | 43 | 43 | 42 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 43 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 55 | 45 |
| 2 | 55 | 45 |
| 3 | 55 | 45 |
| 4 | 55 | 45 |
| 5 | 56 | 44 |
| 6 | 56 | 44 |
| 7 | 56 | 44 |
| 8 | 57 | 43 |
| 9 | 57 | 43 |
| 10 | 57 | 43 |
| 11 | 58 | 42 |
| 12 | 59 | 41 |
| 13 | 59 | 41 |
| 14 | 59 | 41 |
| 15 | 59 | 41 |
| 16 | 59 | 41 |
| 17 | 60 | 40 |
| 18 | 60 | 40 |
| 19 | 60 | 40 |
| 20 | 60 | 40 |
| 21 | 60 | 40 |
| 22 | 60 | 40 |
| 23 | 60 | 40 |
| 24 | 59 | 41 |
| 25 | 59 | 41 |
| 26 | 59 | 41 |
| 27 | 59 | 41 |
| 28 | 59 | 41 |
| 29 | 58 | 42 |
| 30 | 58 | 42 |
| 31 | 57 | 43 |
Chance of precipitation in March
Seoul gets around 38 mm of rain and snow over 6.2 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.
| 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 (%) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| Snow chance (%) | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 20 | 7 |
| 2 | 20 | 7 |
| 3 | 20 | 6 |
| 4 | 20 | 6 |
| 5 | 20 | 6 |
| 6 | 20 | 6 |
| 7 | 20 | 5 |
| 8 | 20 | 5 |
| 9 | 19 | 5 |
| 10 | 19 | 4 |
| 11 | 19 | 4 |
| 12 | 19 | 4 |
| 13 | 19 | 3 |
| 14 | 19 | 3 |
| 15 | 19 | 3 |
| 16 | 19 | 3 |
| 17 | 19 | 2 |
| 18 | 19 | 2 |
| 19 | 20 | 2 |
| 20 | 20 | 2 |
| 21 | 20 | 2 |
| 22 | 20 | 2 |
| 23 | 20 | 2 |
| 24 | 20 | 2 |
| 25 | 21 | 2 |
| 26 | 21 | 2 |
| 27 | 21 | 2 |
| 28 | 21 | 1 |
| 29 | 21 | 1 |
| 30 | 21 | 1 |
| 31 | 21 | 1 |
Humidity in March
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, the windiest month of the year.
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
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 6:27 AM, and sunset from 6:18 PM to 6:47 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 | 11.1 | 11.2 | 11.2 | 11.3 | 11.3 | 11.3 | 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) | 7:13 | 7:11 | 7:10 | 7:08 | 7:07 | 7:06 | 7:04 | 7:03 | 7:01 | 7:00 | 6:58 | 6:57 | 6:55 | 6:54 | 6:52 | 6:51 | 6:49 | 6:48 | 6:46 | 6:45 | 6:43 | 6:41 | 6:40 | 6:38 | 6:37 | 6:35 | 6:34 | 6:32 | 6:31 | 6:29 | 6:27 |
| Sunset (PM) | 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 | 6:33 | 6:34 | 6:35 | 6:36 | 6:37 | 6:37 | 6:38 | 6:39 | 6:40 | 6:41 | 6:42 | 6:43 | 6:44 | 6:45 | 6:46 | 6:47 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.1 | 7:13 | 6:18 |
| 2 | 11.1 | 7:11 | 6:19 |
| 3 | 11.2 | 7:10 | 6:20 |
| 4 | 11.2 | 7:08 | 6:21 |
| 5 | 11.3 | 7:07 | 6:22 |
| 6 | 11.3 | 7:06 | 6:23 |
| 7 | 11.3 | 7:04 | 6:24 |
| 8 | 11.4 | 7:03 | 6:25 |
| 9 | 11.4 | 7:01 | 6:26 |
| 10 | 11.5 | 7:00 | 6:27 |
| 11 | 11.5 | 6:58 | 6:28 |
| 12 | 11.5 | 6:57 | 6:29 |
| 13 | 11.6 | 6:55 | 6:30 |
| 14 | 11.6 | 6:54 | 6:31 |
| 15 | 11.7 | 6:52 | 6:32 |
| 16 | 11.7 | 6:51 | 6:33 |
| 17 | 11.7 | 6:49 | 6:34 |
| 18 | 11.8 | 6:48 | 6:35 |
| 19 | 11.8 | 6:46 | 6:36 |
| 20 | 11.9 | 6:45 | 6:37 |
| 21 | 11.9 | 6:43 | 6:37 |
| 22 | 11.9 | 6:41 | 6:38 |
| 23 | 12.0 | 6:40 | 6:39 |
| 24 | 12.0 | 6:38 | 6:40 |
| 25 | 12.1 | 6:37 | 6:41 |
| 26 | 12.1 | 6:35 | 6:42 |
| 27 | 12.2 | 6:34 | 6:43 |
| 28 | 12.2 | 6:32 | 6:44 |
| 29 | 12.2 | 6:31 | 6:45 |
| 30 | 12.3 | 6:29 | 6:46 |
| 31 | 12.3 | 6:27 | 6:47 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 4.67 kWh/m².
For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.79 kWh/m² in May across the year — March's 4.67 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 | 4.2 | 4.2 | 4.2 | 4.3 | 4.3 | 4.4 | 4.4 | 4.4 | 4.5 | 4.5 | 4.6 | 4.6 | 4.6 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 5.0 | 5.0 | 5.0 | 5.0 | 5.1 | 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 | 4.2 | Bright |
| 4 | 4.2 | Bright |
| 5 | 4.2 | Bright |
| 6 | 4.3 | Bright |
| 7 | 4.3 | Bright |
| 8 | 4.4 | Bright |
| 9 | 4.4 | Bright |
| 10 | 4.4 | Bright |
| 11 | 4.5 | Bright |
| 12 | 4.5 | Bright |
| 13 | 4.6 | Bright |
| 14 | 4.6 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.7 | Bright |
| 17 | 4.7 | Bright |
| 18 | 4.8 | Bright |
| 19 | 4.8 | Bright |
| 20 | 4.8 | Bright |
| 21 | 4.8 | Bright |
| 22 | 4.9 | Bright |
| 23 | 4.9 | Bright |
| 24 | 5.0 | Bright |
| 25 | 5.0 | Bright |
| 26 | 5.0 | Bright |
| 27 | 5.0 | Bright |
| 28 | 5.1 | Bright |
| 29 | 5.1 | Bright |
| 30 | 5.1 | Bright |
| 31 | 5.1 | Bright |
Hazard calendar for Seoul
In March, Seoul sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Seoul sits in the Pacific typhoon belt; the season peaks July–October.
Seoul's rainy season runs July–August, when most of the year's rain falls.
Is March a good time to visit Seoul?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a weaker month for outdoor sightseeing in Seoul.
What to pack for Seoul in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Seoul sees daytime highs around 11°C and nights near 0°C. Pack a warm layer. Worth having: sun protection. About 6 days see rain.
Sea temperature near Seoul 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 38 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 6 | 4 | 5 | 8 | 12 | 17 | 21 | 24 | 23 | 20 | 15 | 10 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 6 | Bracing |
| Feb | 4 | Bracing |
| Mar | 5 | Bracing |
| Apr | 8 | Bracing |
| May | 12 | Bracing |
| Jun | 17 | Cool |
| Jul | 21 | Refreshing |
| Aug | 24 | Refreshing |
| Sep | 23 | Refreshing |
| Oct | 20 | Cool |
| Nov | 15 | Bracing |
| Dec | 10 | Bracing |
UV index in Seoul in March
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 Seoul peaks around July 22 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 4 | 6 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | High | High | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 5 | High |
| Jun | 7 | High |
| Jul | 8 | Very high |
| Aug | 8 | Very high |
| Sep | 7 | High |
| Oct | 5 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Seoul in March
Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.
Air quality in Seoul is worst in March — around 27 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (August, 14 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Seoul's WHO annual average of 21 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 25 | 25 | 27 | 22 | 19 | 17 | 15 | 14 | 19 | 23 | 24 | 23 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 25 | Moderate |
| Feb | 25 | Moderate |
| Mar | 27 | Moderate |
| Apr | 22 | Moderate |
| May | 19 | Moderate |
| Jun | 17 | Moderate |
| Jul | 15 | Moderate |
| Aug | 14 | Moderate |
| Sep | 19 | Moderate |
| Oct | 23 | Moderate |
| Nov | 24 | Moderate |
| Dec | 23 | Moderate |
Where is Seoul?
Seoul sits at 37.6°N, 127.0°E, 38 m above sea level, in South Korea. The nearest listed city is Gwangmyeong, 14 km away.
Topography around Seoul
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Seoul.
Within 3 km, the terrain around Seoul has significant variations in elevation — a maximum elevation change of 302 m around an average of 71 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 777 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,443 m.
The land around Seoul is covered by artificial surfaces (69%) and trees (30%) within 3 km, artificial surfaces (51%) and trees (40%) within 16 km, and trees (48%) within 80 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 Seoul (37.566°, 126.9784°, elevation 38 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).