Incheon weather in April
In April, Incheon sees average daytime highs of 16°C and overnight lows near 7°C, with 65 mm of rain across 7 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.
Highs climb over the month, from about 13°C in the first days to 18°C by the end. The sky is clear or mostly clear about 43% of the time in April, and the air most often feels dry.
Daylight stretches from about 12 h 24 min at the start of April to 13 h 30 min by month's end. Set against the rest of the year, April is Incheon's 7th-clearest and 2nd-windiest month. For the whole year in context, see Incheon's year-round climate.
- Daytime high
- 16°
- 7th warmest
- Overnight low
- 7°
- 6th coldest
- Rainfall
- 65 mm
- 7 wet days
- Daylight
- 13 hours
- 6:05 AM – 7:02 PM
- Cloud cover
- 51%
- 7th clearest
- Wind
- 12 km/h
- 2nd windiest
- Solar energy
- 5.43 kWh/m²
- Travel score
- 5.3
- out of 10
- Air quality
- Elevated
- PM2.5 19 µg/m³ · 2020
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in April
Highs climb over the month, from about 13°C in the first days to 18°C by the end.
A typical April day in Incheon reaches about 16°C in the afternoon and slips back to 7°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 20°C. Set against its neighbours, April runs about 6°C warmer than March and about 5°C cooler than May.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 19 |
| Avg low (°C) | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 13 | 4 |
| 2 | 13 | 4 |
| 3 | 13 | 5 |
| 4 | 13 | 5 |
| 5 | 14 | 5 |
| 6 | 14 | 5 |
| 7 | 14 | 6 |
| 8 | 14 | 6 |
| 9 | 14 | 6 |
| 10 | 15 | 6 |
| 11 | 15 | 6 |
| 12 | 15 | 7 |
| 13 | 15 | 7 |
| 14 | 16 | 7 |
| 15 | 16 | 7 |
| 16 | 16 | 7 |
| 17 | 16 | 8 |
| 18 | 16 | 8 |
| 19 | 16 | 8 |
| 20 | 17 | 8 |
| 21 | 17 | 8 |
| 22 | 17 | 9 |
| 23 | 17 | 9 |
| 24 | 17 | 9 |
| 25 | 18 | 9 |
| 26 | 18 | 9 |
| 27 | 18 | 10 |
| 28 | 18 | 10 |
| 29 | 18 | 10 |
| 30 | 19 | 10 |
How April really feels in Incheon
Once humidity and wind are folded in, April 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.
April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Incheon weather by month
How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-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° / -6° | 19 | 3.6 | 2 | 9.7 | 0.0 |
| Feb | 4° / -4° | 24 | 3.8 | 1.4 | 10.6 | 0.2 |
| Mar | 10° / 1° | 36 | 5.5 | 0.8 | 11.7 | 2.4 |
| Apr | 16° / 7° | 65 | 7 | 0 | 12.9 | 5.3 |
| May | 21° / 13° | 92 | 7.5 | 0 | 14 | 6.9 |
| Jun | 25° / 18° | 122 | 7.8 | 0 | 14.5 | 7.1 |
| Jul | 27° / 22° | 298 | 15.1 | 0 | 14.3 | 5.5 |
| Aug | 29° / 23° | 244 | 13.8 | 0 | 13.4 | 5.3 |
| Sep | 25° / 18° | 121 | 7.6 | 0 | 12.3 | 7.2 |
| Oct | 19° / 11° | 54 | 5.3 | 0 | 11 | 7.1 |
| Nov | 12° / 4° | 48 | 7.3 | 0.3 | 10 | 3.3 |
| Dec | 4° / -3° | 22 | 5 | 1.2 | 9.5 | 0.2 |
Cloud cover in April
The sky is clear or mostly clear about 43% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 13% of April, with mostly cloudy or overcast conditions the remaining 44%.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 59 | 59 | 59 | 58 | 57 | 57 | 57 | 56 | 56 | 56 | 56 | 55 | 55 | 56 | 55 | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 55 | 55 | 56 | 55 | 55 | 55 | 56 | 56 |
| Cloudier (%) | 41 | 41 | 41 | 42 | 43 | 43 | 43 | 44 | 44 | 44 | 44 | 45 | 45 | 44 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 45 | 45 | 44 | 45 | 45 | 45 | 44 | 44 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 59 | 41 |
| 2 | 59 | 41 |
| 3 | 59 | 41 |
| 4 | 58 | 42 |
| 5 | 57 | 43 |
| 6 | 57 | 43 |
| 7 | 57 | 43 |
| 8 | 56 | 44 |
| 9 | 56 | 44 |
| 10 | 56 | 44 |
| 11 | 56 | 44 |
| 12 | 55 | 45 |
| 13 | 55 | 45 |
| 14 | 56 | 44 |
| 15 | 55 | 45 |
| 16 | 55 | 45 |
| 17 | 55 | 45 |
| 18 | 55 | 45 |
| 19 | 56 | 44 |
| 20 | 56 | 44 |
| 21 | 56 | 44 |
| 22 | 56 | 44 |
| 23 | 55 | 45 |
| 24 | 55 | 45 |
| 25 | 56 | 44 |
| 26 | 55 | 45 |
| 27 | 55 | 45 |
| 28 | 55 | 45 |
| 29 | 56 | 44 |
| 30 | 56 | 44 |
Chance of precipitation in April
Incheon gets around 65 mm of rain over 7 wet days in April. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 23% and peaks near 26% on the wettest days.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 |
| Rain chance (%) | |
|---|---|
| 1 | 20 |
| 2 | 20 |
| 3 | 20 |
| 4 | 21 |
| 5 | 21 |
| 6 | 21 |
| 7 | 21 |
| 8 | 22 |
| 9 | 22 |
| 10 | 22 |
| 11 | 22 |
| 12 | 22 |
| 13 | 23 |
| 14 | 23 |
| 15 | 23 |
| 16 | 23 |
| 17 | 23 |
| 18 | 24 |
| 19 | 24 |
| 20 | 24 |
| 21 | 24 |
| 22 | 24 |
| 23 | 25 |
| 24 | 25 |
| 25 | 25 |
| 26 | 25 |
| 27 | 26 |
| 28 | 26 |
| 29 | 26 |
| 30 | 26 |
Humidity in April
Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the dry band about 97% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 98 | 98 | 96 | 96 | 95 | 94 | 93 | 92 | 91 | 90 | 89 | 88 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 100 | 0 | 0 |
| 2 | 100 | 0 | 0 |
| 3 | 100 | 0 | 0 |
| 4 | 100 | 0 | 0 |
| 5 | 100 | 0 | 0 |
| 6 | 100 | 0 | 0 |
| 7 | 100 | 0 | 0 |
| 8 | 100 | 0 | 0 |
| 9 | 100 | 0 | 0 |
| 10 | 99 | 1 | 0 |
| 11 | 99 | 1 | 0 |
| 12 | 99 | 1 | 0 |
| 13 | 99 | 1 | 0 |
| 14 | 99 | 1 | 0 |
| 15 | 99 | 1 | 0 |
| 16 | 99 | 1 | 0 |
| 17 | 99 | 1 | 0 |
| 18 | 98 | 2 | 0 |
| 19 | 98 | 2 | 0 |
| 20 | 98 | 2 | 0 |
| 21 | 96 | 3 | 1 |
| 22 | 96 | 3 | 1 |
| 23 | 95 | 4 | 1 |
| 24 | 94 | 5 | 1 |
| 25 | 93 | 6 | 1 |
| 26 | 92 | 7 | 1 |
| 27 | 91 | 8 | 1 |
| 28 | 90 | 9 | 1 |
| 29 | 89 | 10 | 1 |
| 30 | 88 | 11 | 1 |
Wind in April
Winds average 12 km/h in April.
Across April, daily wind ranges from about 12 km/h on the calmest days to 12 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| 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 |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 12 | calm |
| 2 | 12 | calm |
| 3 | 12 | calm |
| 4 | 12 | calm |
| 5 | 12 | calm |
| 6 | 12 | calm |
| 7 | 12 | calm |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 12 | calm |
| 14 | 12 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | calm |
| 29 | 12 | calm |
| 30 | 12 | calm |
Sunrise & sunset in April
Daylight runs from about 12 h 24 min at the start of April to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 66 minutes over April. Sunrise moves from 6:27 AM to 5:46 AM, and sunset from 6:49 PM to 7:15 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.4 | 12.4 | 12.4 | 12.5 | 12.5 | 12.6 | 12.6 | 12.6 | 12.7 | 12.7 | 12.8 | 12.8 | 12.8 | 12.9 | 12.9 | 13.0 | 13.0 | 13.0 | 13.1 | 13.1 | 13.2 | 13.2 | 13.2 | 13.3 | 13.3 | 13.3 | 13.4 | 13.4 | 13.5 | 13.5 |
| Sunrise (AM) | 6:27 | 6:25 | 6:24 | 6:22 | 6:21 | 6:19 | 6:18 | 6:16 | 6:15 | 6:13 | 6:12 | 6:10 | 6:09 | 6:07 | 6:06 | 6:05 | 6:03 | 6:02 | 6:00 | 5:59 | 5:58 | 5:56 | 5:55 | 5:53 | 5:52 | 5:51 | 5:50 | 5:48 | 5:47 | 5:46 |
| Sunset (PM) | 6:49 | 6:50 | 6:50 | 6:51 | 6:52 | 6:53 | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 | 6:59 | 7:00 | 7:00 | 7:01 | 7:02 | 7:03 | 7:04 | 7:05 | 7:06 | 7:07 | 7:08 | 7:09 | 7:10 | 7:11 | 7:11 | 7:12 | 7:13 | 7:14 | 7:15 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.4 | 6:27 | 6:49 |
| 2 | 12.4 | 6:25 | 6:50 |
| 3 | 12.4 | 6:24 | 6:50 |
| 4 | 12.5 | 6:22 | 6:51 |
| 5 | 12.5 | 6:21 | 6:52 |
| 6 | 12.6 | 6:19 | 6:53 |
| 7 | 12.6 | 6:18 | 6:54 |
| 8 | 12.6 | 6:16 | 6:55 |
| 9 | 12.7 | 6:15 | 6:56 |
| 10 | 12.7 | 6:13 | 6:57 |
| 11 | 12.8 | 6:12 | 6:58 |
| 12 | 12.8 | 6:10 | 6:59 |
| 13 | 12.8 | 6:09 | 7:00 |
| 14 | 12.9 | 6:07 | 7:00 |
| 15 | 12.9 | 6:06 | 7:01 |
| 16 | 13.0 | 6:05 | 7:02 |
| 17 | 13.0 | 6:03 | 7:03 |
| 18 | 13.0 | 6:02 | 7:04 |
| 19 | 13.1 | 6:00 | 7:05 |
| 20 | 13.1 | 5:59 | 7:06 |
| 21 | 13.2 | 5:58 | 7:07 |
| 22 | 13.2 | 5:56 | 7:08 |
| 23 | 13.2 | 5:55 | 7:09 |
| 24 | 13.3 | 5:53 | 7:10 |
| 25 | 13.3 | 5:52 | 7:11 |
| 26 | 13.3 | 5:51 | 7:11 |
| 27 | 13.4 | 5:50 | 7:12 |
| 28 | 13.4 | 5:48 | 7:13 |
| 29 | 13.5 | 5:47 | 7:14 |
| 30 | 13.5 | 5:46 | 7:15 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.43 kWh/m².
For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 5.82 kWh/m² in May across the year — April's 5.43 kWh/m² sits near the top of that range.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 |
| 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.2 | Bright |
| 2 | 5.2 | Bright |
| 3 | 5.2 | Bright |
| 4 | 5.3 | Bright |
| 5 | 5.3 | Bright |
| 6 | 5.3 | Bright |
| 7 | 5.3 | Bright |
| 8 | 5.3 | Bright |
| 9 | 5.3 | Bright |
| 10 | 5.4 | Bright |
| 11 | 5.4 | Bright |
| 12 | 5.4 | Bright |
| 13 | 5.4 | Bright |
| 14 | 5.4 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.5 | Bright |
| 17 | 5.5 | Bright |
| 18 | 5.5 | Bright |
| 19 | 5.5 | Bright |
| 20 | 5.5 | Bright |
| 21 | 5.5 | Bright |
| 22 | 5.5 | Bright |
| 23 | 5.5 | Bright |
| 24 | 5.6 | Bright |
| 25 | 5.6 | Bright |
| 26 | 5.6 | Bright |
| 27 | 5.6 | Bright |
| 28 | 5.6 | Bright |
| 29 | 5.6 | Bright |
| 30 | 5.6 | Bright |
Hazard calendar for Incheon
In April, Incheon sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Incheon sits in the Pacific typhoon belt; the season peaks July–October.
Incheon's rainy season runs July–August, when most of the year's rain falls.
Is April a good time to visit Incheon?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is a reasonable time to visit Incheon for sightseeing.
What to pack for Incheon in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Incheon sees daytime highs around 16°C and nights near 7°C. Worth packing: a warm layer and sun protection. About 7 days see rain.
Sea temperature near Incheon in April
The nearest coast averages about 8°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore 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 Incheon in April
Clear-sky midday UV in April 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 Incheon 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 Incheon in April
Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.
Air quality in Incheon is worst in March — around 25 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (August, 12 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Incheon's WHO annual average of 19 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 22 | 23 | 25 | 20 | 17 | 15 | 14 | 12 | 17 | 20 | 22 | 21 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 22 | Moderate |
| Feb | 23 | Moderate |
| Mar | 25 | Moderate |
| Apr | 20 | Moderate |
| May | 17 | Moderate |
| Jun | 15 | Moderate |
| Jul | 14 | Moderate |
| Aug | 12 | Moderate |
| Sep | 17 | Moderate |
| Oct | 20 | Moderate |
| Nov | 22 | Moderate |
| Dec | 21 | Moderate |
Where is Incheon?
Incheon sits at 37.5°N, 126.7°E, 43 m above sea level, in South Korea. The nearest listed city is Bucheon-si, 8.0 km away.
Topography around Incheon
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Incheon.
Within 3 km, the terrain around Incheon has only modest variations in elevation — a maximum elevation change of 187 m around an average of 35 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 389 m; within 80 km, large variations in elevation — a maximum elevation change of 1,126 m.
The land around Incheon is covered by artificial surfaces (71%) and trees (23%) within 3 km, artificial surfaces (42%), trees (20%) and water (20%) within 16 km, and trees (35%) and water (31%) 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 Incheon (37.4565°, 126.7052°, elevation 43 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).