Koch'ang weather in April
In April, Koch'ang sees average daytime highs of 17°C and overnight lows near 7°C, with 81 mm of rain across 7.5 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 15°C in the first days to 20°C by the end. The sky is clear or mostly clear about 41% of the time in April, and the air most often feels dry.
Daylight stretches from about 12 h 18 min at the start of April to 13 h 24 min by month's end. Set against the rest of the year, April is Koch'ang's 3rd-clearest and 5th-windiest month. For the whole year in context, see Koch'ang's year-round climate.
- Daytime high
- 17°
- 7th warmest
- Overnight low
- 7°
- 6th coldest
- Rainfall
- 81 mm
- 7.5 wet days
- Daylight
- 12 h 54 min
- 6:07 AM – 7:00 PM
- Cloud cover
- 52%
- 3rd clearest
- Wind
- 11 km/h
- 5th windiest
- Solar energy
- 5.59 kWh/m²
- Travel score
- 5.9
- out of 10
Koch'ang is human settlement in South Korea.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in April
Highs climb over the month, from about 15°C in the first days to 20°C by the end.
A typical April day in Koch'ang reaches about 17°C in the afternoon and slips back to 7°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 22°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) | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 |
| Avg low (°C) | 5 | 5 | 5 | 5 | 5 | 6 | 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 | 14 | 5 |
| 2 | 15 | 5 |
| 3 | 15 | 5 |
| 4 | 15 | 5 |
| 5 | 15 | 5 |
| 6 | 16 | 6 |
| 7 | 16 | 6 |
| 8 | 16 | 6 |
| 9 | 16 | 6 |
| 10 | 16 | 6 |
| 11 | 17 | 6 |
| 12 | 17 | 7 |
| 13 | 17 | 7 |
| 14 | 17 | 7 |
| 15 | 17 | 7 |
| 16 | 18 | 7 |
| 17 | 18 | 8 |
| 18 | 18 | 8 |
| 19 | 18 | 8 |
| 20 | 18 | 8 |
| 21 | 19 | 8 |
| 22 | 19 | 9 |
| 23 | 19 | 9 |
| 24 | 19 | 9 |
| 25 | 19 | 9 |
| 26 | 19 | 9 |
| 27 | 20 | 10 |
| 28 | 20 | 10 |
| 29 | 20 | 10 |
| 30 | 20 | 10 |
How April really feels in Koch'ang
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.
Koch'ang 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 | 4° / -3° | 28 | 5.9 | 4.1 | 9.9 | 0.0 |
| Feb | 6° / -2° | 33 | 5.4 | 1.7 | 10.7 | 0.7 |
| Mar | 11° / 2° | 55 | 7.3 | 1 | 11.7 | 3.2 |
| Apr | 17° / 7° | 81 | 7.5 | 0 | 12.9 | 5.9 |
| May | 22° / 13° | 88 | 7.8 | 0 | 13.8 | 7.1 |
| Jun | 26° / 18° | 147 | 9.6 | 0 | 14.3 | 6.6 |
| Jul | 29° / 23° | 238 | 15.6 | 0 | 14.1 | 4.9 |
| Aug | 29° / 23° | 228 | 16 | 0 | 13.3 | 4.6 |
| Sep | 26° / 18° | 150 | 9.5 | 0 | 12.2 | 6.8 |
| Oct | 20° / 11° | 57 | 5.5 | 0 | 11.1 | 7.3 |
| Nov | 14° / 5° | 47 | 6.9 | 0.2 | 10.1 | 4.2 |
| Dec | 7° / -1° | 31 | 6.5 | 2.9 | 9.7 | 0.9 |
Cloud cover in April
The sky is clear or mostly clear about 41% 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 46%.
| 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 (%) | 56 | 56 | 57 | 56 | 56 | 57 | 56 | 56 | 56 | 56 | 55 | 54 | 54 | 54 | 53 | 54 | 54 | 53 | 53 | 54 | 53 | 54 | 53 | 53 | 53 | 52 | 53 | 53 | 53 | 52 |
| Cloudier (%) | 44 | 44 | 43 | 44 | 44 | 43 | 44 | 44 | 44 | 44 | 45 | 46 | 46 | 46 | 47 | 46 | 46 | 47 | 47 | 46 | 47 | 46 | 47 | 47 | 47 | 48 | 47 | 47 | 47 | 48 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 56 | 44 |
| 2 | 56 | 44 |
| 3 | 57 | 43 |
| 4 | 56 | 44 |
| 5 | 56 | 44 |
| 6 | 57 | 43 |
| 7 | 56 | 44 |
| 8 | 56 | 44 |
| 9 | 56 | 44 |
| 10 | 56 | 44 |
| 11 | 55 | 45 |
| 12 | 54 | 46 |
| 13 | 54 | 46 |
| 14 | 54 | 46 |
| 15 | 53 | 47 |
| 16 | 54 | 46 |
| 17 | 54 | 46 |
| 18 | 53 | 47 |
| 19 | 53 | 47 |
| 20 | 54 | 46 |
| 21 | 53 | 47 |
| 22 | 54 | 46 |
| 23 | 53 | 47 |
| 24 | 53 | 47 |
| 25 | 53 | 47 |
| 26 | 52 | 48 |
| 27 | 53 | 47 |
| 28 | 53 | 47 |
| 29 | 53 | 47 |
| 30 | 52 | 48 |
Chance of precipitation in April
Koch'ang gets around 81 mm of rain over 7.5 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 25% and peaks near 27% 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 (%) | 22 | 22 | 22 | 23 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 27 | 27 | 27 |
| Rain chance (%) | |
|---|---|
| 1 | 22 |
| 2 | 22 |
| 3 | 22 |
| 4 | 23 |
| 5 | 23 |
| 6 | 23 |
| 7 | 24 |
| 8 | 24 |
| 9 | 24 |
| 10 | 25 |
| 11 | 25 |
| 12 | 25 |
| 13 | 25 |
| 14 | 25 |
| 15 | 25 |
| 16 | 25 |
| 17 | 25 |
| 18 | 25 |
| 19 | 25 |
| 20 | 25 |
| 21 | 25 |
| 22 | 25 |
| 23 | 25 |
| 24 | 26 |
| 25 | 26 |
| 26 | 26 |
| 27 | 26 |
| 28 | 27 |
| 29 | 27 |
| 30 | 27 |
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 93% 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 (%) | 99 | 99 | 99 | 99 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 97 | 97 | 97 | 96 | 96 | 96 | 95 | 94 | 93 | 92 | 91 | 89 | 88 | 87 | 84 | 83 | 81 | 81 | 80 |
| Comfortable (%) | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 14 | 15 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 4 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 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 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 99 | 1 | 0 | 0 |
| 2 | 99 | 1 | 0 | 0 |
| 3 | 99 | 1 | 0 | 0 |
| 4 | 99 | 1 | 0 | 0 |
| 5 | 98 | 2 | 0 | 0 |
| 6 | 98 | 2 | 0 | 0 |
| 7 | 98 | 2 | 0 | 0 |
| 8 | 98 | 2 | 0 | 0 |
| 9 | 98 | 2 | 0 | 0 |
| 10 | 98 | 2 | 0 | 0 |
| 11 | 98 | 2 | 0 | 0 |
| 12 | 97 | 3 | 0 | 0 |
| 13 | 97 | 3 | 0 | 0 |
| 14 | 97 | 3 | 0 | 0 |
| 15 | 96 | 4 | 0 | 0 |
| 16 | 96 | 4 | 0 | 0 |
| 17 | 96 | 4 | 0 | 0 |
| 18 | 95 | 5 | 0 | 0 |
| 19 | 94 | 5 | 1 | 0 |
| 20 | 93 | 6 | 1 | 0 |
| 21 | 92 | 7 | 1 | 0 |
| 22 | 91 | 8 | 1 | 0 |
| 23 | 89 | 9 | 2 | 0 |
| 24 | 88 | 10 | 2 | 0 |
| 25 | 87 | 11 | 2 | 0 |
| 26 | 84 | 12 | 3 | 1 |
| 27 | 83 | 13 | 3 | 1 |
| 28 | 81 | 14 | 4 | 1 |
| 29 | 81 | 14 | 4 | 1 |
| 30 | 80 | 15 | 4 | 1 |
Wind in April
Winds average 11 km/h in April.
Across April, daily wind ranges from about 11 km/h on the calmest days to 11 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) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| 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 | 11 | calm |
| 2 | 11 | calm |
| 3 | 11 | calm |
| 4 | 11 | calm |
| 5 | 11 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
Sunrise & sunset in April
Daylight runs from about 12 h 18 min at the start of April to 13 h 24 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 6:28 AM to 5:49 AM, and sunset from 6:48 PM to 7:12 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) | 12.3 | 12.4 | 12.4 | 12.4 | 12.5 | 12.5 | 12.6 | 12.6 | 12.6 | 12.7 | 12.7 | 12.7 | 12.8 | 12.8 | 12.9 | 12.9 | 12.9 | 13.0 | 13.0 | 13.0 | 13.1 | 13.1 | 13.1 | 13.2 | 13.2 | 13.2 | 13.3 | 13.3 | 13.3 | 13.4 |
| Sunrise (AM) | 6:28 | 6:26 | 6:25 | 6:23 | 6:22 | 6:21 | 6:19 | 6:18 | 6:16 | 6:15 | 6:13 | 6:12 | 6:11 | 6:09 | 6:08 | 6:07 | 6:05 | 6:04 | 6:03 | 6:01 | 6:00 | 5:59 | 5:57 | 5:56 | 5:55 | 5:54 | 5:53 | 5:51 | 5:50 | 5:49 |
| Sunset (PM) | 6:48 | 6:49 | 6:50 | 6:50 | 6:51 | 6:52 | 6:53 | 6:54 | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 | 6:59 | 6:59 | 7:00 | 7:01 | 7:02 | 7:03 | 7:04 | 7:04 | 7:05 | 7:06 | 7:07 | 7:08 | 7:09 | 7:09 | 7:10 | 7:11 | 7:12 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.3 | 6:28 | 6:48 |
| 2 | 12.4 | 6:26 | 6:49 |
| 3 | 12.4 | 6:25 | 6:50 |
| 4 | 12.4 | 6:23 | 6:50 |
| 5 | 12.5 | 6:22 | 6:51 |
| 6 | 12.5 | 6:21 | 6:52 |
| 7 | 12.6 | 6:19 | 6:53 |
| 8 | 12.6 | 6:18 | 6:54 |
| 9 | 12.6 | 6:16 | 6:54 |
| 10 | 12.7 | 6:15 | 6:55 |
| 11 | 12.7 | 6:13 | 6:56 |
| 12 | 12.7 | 6:12 | 6:57 |
| 13 | 12.8 | 6:11 | 6:58 |
| 14 | 12.8 | 6:09 | 6:59 |
| 15 | 12.9 | 6:08 | 6:59 |
| 16 | 12.9 | 6:07 | 7:00 |
| 17 | 12.9 | 6:05 | 7:01 |
| 18 | 13.0 | 6:04 | 7:02 |
| 19 | 13.0 | 6:03 | 7:03 |
| 20 | 13.0 | 6:01 | 7:04 |
| 21 | 13.1 | 6:00 | 7:04 |
| 22 | 13.1 | 5:59 | 7:05 |
| 23 | 13.1 | 5:57 | 7:06 |
| 24 | 13.2 | 5:56 | 7:07 |
| 25 | 13.2 | 5:55 | 7:08 |
| 26 | 13.2 | 5:54 | 7:09 |
| 27 | 13.3 | 5:53 | 7:09 |
| 28 | 13.3 | 5:51 | 7:10 |
| 29 | 13.3 | 5:50 | 7:11 |
| 30 | 13.4 | 5:49 | 7:12 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.59 kWh/m².
For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 5.93 kWh/m² in May across the year — April's 5.59 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) | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 |
| 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 | 5.3 | Bright |
| 2 | 5.3 | Bright |
| 3 | 5.4 | Bright |
| 4 | 5.4 | Bright |
| 5 | 5.4 | Bright |
| 6 | 5.4 | Bright |
| 7 | 5.5 | Bright |
| 8 | 5.5 | Bright |
| 9 | 5.5 | Bright |
| 10 | 5.5 | Bright |
| 11 | 5.5 | Bright |
| 12 | 5.6 | Bright |
| 13 | 5.6 | Bright |
| 14 | 5.6 | Bright |
| 15 | 5.6 | Bright |
| 16 | 5.6 | Bright |
| 17 | 5.6 | Bright |
| 18 | 5.6 | Bright |
| 19 | 5.6 | Bright |
| 20 | 5.6 | Bright |
| 21 | 5.7 | Bright |
| 22 | 5.7 | Bright |
| 23 | 5.7 | Bright |
| 24 | 5.7 | Bright |
| 25 | 5.7 | Bright |
| 26 | 5.7 | Bright |
| 27 | 5.7 | Bright |
| 28 | 5.7 | Bright |
| 29 | 5.7 | Bright |
| 30 | 5.7 | Bright |
Hazard calendar for Koch'ang
In April, Koch'ang sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Koch'ang sits in the Pacific typhoon belt; the season peaks July–October.
Koch'ang's rainy season runs June–September, when most of the year's rain falls.
Is April a good time to visit Koch'ang?
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 Koch'ang for sightseeing.
What to pack for Koch'ang in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Koch'ang sees daytime highs around 17°C and nights near 7°C. Worth packing: a warm layer and sun protection. About 8 days see rain.
Sea temperature near Koch'ang in April
The nearest coast averages about 10°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 30 km away) is warmest in August at about 25°C and coldest in February near 6°C.
It's comfortable for a long swim from Jun 26 to Oct 11 — about 3.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 8 | 6 | 7 | 10 | 14 | 19 | 23 | 25 | 23 | 19 | 15 | 11 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 8 | Bracing |
| Feb | 6 | Bracing |
| Mar | 7 | Bracing |
| Apr | 10 | Bracing |
| May | 14 | Bracing |
| Jun | 19 | Cool |
| Jul | 23 | Refreshing |
| Aug | 25 | Warm |
| Sep | 23 | Refreshing |
| Oct | 19 | Cool |
| Nov | 15 | Cool |
| Dec | 11 | Bracing |
UV index in Koch'ang in April
Clear-sky midday UV in April 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 Koch'ang peaks around September 12 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 7 | 7 | 8 | 8 | 7 | 8 | 5 | 4 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 5 | High |
| Apr | 7 | High |
| May | 7 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 7 | Very high |
| Sep | 8 | Very high |
| Oct | 5 | High |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Koch'ang 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 Koch'ang is worst in March — around 61 µg/m³ PM2.5 (unhealthy), about 2.1× the cleanest month (August, 28 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) | 41 | 48 | 61 | 54 | 45 | 39 | 29 | 28 | 33 | 35 | 38 | 34 |
| Level | Poor | Poor | Unhealthy | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Poor | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 41 | Poor |
| Feb | 48 | Poor |
| Mar | 61 | Unhealthy |
| Apr | 54 | Poor |
| May | 45 | Poor |
| Jun | 39 | Poor |
| Jul | 29 | Moderate |
| Aug | 28 | Moderate |
| Sep | 33 | Moderate |
| Oct | 35 | Moderate |
| Nov | 38 | Poor |
| Dec | 34 | Moderate |
Where is Koch'ang?
Koch'ang sits at 35.4°N, 126.7°E, 44 m above sea level, in South Korea. The nearest listed city is Jangseong, 17 km away.
Topography around Koch'ang
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Koch'ang.
Within 3 km, the terrain around Koch'ang has significant variations in elevation — a maximum elevation change of 403 m around an average of 91 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 730 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,720 m.
The land around Koch'ang is covered by trees (48%) and cropland (29%) within 3 km, trees (57%) and cropland (31%) within 16 km, and trees (40%), water (34%) and cropland (21%) 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 Koch'ang (35.4333°, 126.7°, elevation 44 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).