Hongch’ŏn weather in September
In September, Hongch’ŏn sees average daytime highs of 24°C and overnight lows near 15°C, with 123 mm of rain across 8.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.
Highs ease over the month, from about 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 34% of the time in September, and the air most often feels dry.
Daylight stretches from about 12 h 54 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Hongch’ŏn's 9th-clearest and 11th-windiest month. For the whole year in context, see Hongch’ŏn's year-round climate.
- Daytime high
- 24°
- 4th warmest
- Overnight low
- 15°
- 9th coldest
- Rainfall
- 123 mm
- 8.3 wet days
- Daylight
- 12 h 12 min
- 6:16 AM – 6:30 PM
- Cloud cover
- 58%
- 9th clearest
- Wind
- 7 km/h
- 11th windiest
- Solar energy
- 4.06 kWh/m²
- Travel score
- 7.0
- out of 10
Hongch’ŏn is human settlement in South Korea.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 25°C in the first days to 22°C by the end.
A typical September day in Hongch’ŏn reaches about 24°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.
| 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) | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | 21 |
| Avg low (°C) | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 18 |
| 2 | 26 | 18 |
| 3 | 26 | 17 |
| 4 | 25 | 17 |
| 5 | 25 | 17 |
| 6 | 25 | 17 |
| 7 | 25 | 17 |
| 8 | 25 | 16 |
| 9 | 25 | 16 |
| 10 | 25 | 16 |
| 11 | 24 | 16 |
| 12 | 24 | 16 |
| 13 | 24 | 15 |
| 14 | 24 | 15 |
| 15 | 24 | 15 |
| 16 | 24 | 15 |
| 17 | 23 | 14 |
| 18 | 23 | 14 |
| 19 | 23 | 14 |
| 20 | 23 | 14 |
| 21 | 23 | 14 |
| 22 | 23 | 13 |
| 23 | 23 | 13 |
| 24 | 22 | 13 |
| 25 | 22 | 13 |
| 26 | 22 | 12 |
| 27 | 22 | 12 |
| 28 | 22 | 12 |
| 29 | 21 | 12 |
| 30 | 21 | 11 |
How September really feels in Hongch’ŏn
Once humidity and wind are folded in, September 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.
September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Hongch’ŏn weather by month
How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 1° / -9° | 23 | 4.3 | 3.8 | 9.7 | 0.0 |
| Feb | 4° / -6° | 30 | 4.8 | 3.6 | 10.5 | 0.1 |
| Mar | 10° / -1° | 47 | 7.5 | 3.1 | 11.7 | 2.2 |
| Apr | 16° / 5° | 81 | 8.3 | 0.5 | 12.9 | 5.4 |
| May | 21° / 11° | 97 | 8.3 | 0 | 14 | 6.9 |
| Jun | 25° / 16° | 113 | 9.7 | 0 | 14.6 | 6.7 |
| Jul | 27° / 20° | 303 | 17.4 | 0 | 14.3 | 5.2 |
| Aug | 27° / 20° | 230 | 15.6 | 0 | 13.5 | 5.4 |
| Sep | 24° / 15° | 123 | 8.3 | 0 | 12.3 | 7.0 |
| Oct | 18° / 8° | 53 | 5.6 | 0 | 11 | 6.5 |
| Nov | 10° / 1° | 47 | 7.6 | 1.1 | 10 | 2.5 |
| Dec | 3° / -6° | 28 | 5.7 | 3.9 | 9.4 | 0.0 |
Cloud cover in September
The sky is clear or mostly clear about 34% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to open up as the month goes on.
| 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 (%) | 42 | 43 | 43 | 44 | 44 | 45 | 45 | 45 | 47 | 46 | 46 | 48 | 47 | 48 | 49 | 50 | 50 | 51 | 52 | 53 | 53 | 53 | 54 | 54 | 54 | 55 | 55 | 55 | 55 | 55 |
| Cloudier (%) | 58 | 57 | 57 | 56 | 56 | 55 | 55 | 55 | 53 | 54 | 54 | 52 | 53 | 52 | 51 | 50 | 50 | 49 | 48 | 47 | 47 | 47 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 45 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 42 | 58 |
| 2 | 43 | 57 |
| 3 | 43 | 57 |
| 4 | 44 | 56 |
| 5 | 44 | 56 |
| 6 | 45 | 55 |
| 7 | 45 | 55 |
| 8 | 45 | 55 |
| 9 | 47 | 53 |
| 10 | 46 | 54 |
| 11 | 46 | 54 |
| 12 | 48 | 52 |
| 13 | 47 | 53 |
| 14 | 48 | 52 |
| 15 | 49 | 51 |
| 16 | 50 | 50 |
| 17 | 50 | 50 |
| 18 | 51 | 49 |
| 19 | 52 | 48 |
| 20 | 53 | 47 |
| 21 | 53 | 47 |
| 22 | 53 | 47 |
| 23 | 54 | 46 |
| 24 | 54 | 46 |
| 25 | 54 | 46 |
| 26 | 55 | 45 |
| 27 | 55 | 45 |
| 28 | 55 | 45 |
| 29 | 55 | 45 |
| 30 | 55 | 45 |
Chance of precipitation in September
Hongch’ŏn gets around 123 mm of rain over 8.3 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 28% and peaks near 41% on the wettest days. The odds ease toward the end of the month.
| 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 (%) | 41 | 40 | 39 | 38 | 36 | 35 | 34 | 34 | 33 | 32 | 31 | 30 | 30 | 29 | 28 | 27 | 26 | 25 | 25 | 24 | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 20 |
| Rain chance (%) | |
|---|---|
| 1 | 41 |
| 2 | 40 |
| 3 | 39 |
| 4 | 38 |
| 5 | 36 |
| 6 | 35 |
| 7 | 34 |
| 8 | 34 |
| 9 | 33 |
| 10 | 32 |
| 11 | 31 |
| 12 | 30 |
| 13 | 30 |
| 14 | 29 |
| 15 | 28 |
| 16 | 27 |
| 17 | 26 |
| 18 | 25 |
| 19 | 25 |
| 20 | 24 |
| 21 | 23 |
| 22 | 23 |
| 23 | 22 |
| 24 | 22 |
| 25 | 22 |
| 26 | 22 |
| 27 | 21 |
| 28 | 21 |
| 29 | 21 |
| 30 | 20 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.
| 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 (%) | 5 | 5 | 6 | 7 | 9 | 10 | 12 | 14 | 16 | 18 | 21 | 23 | 26 | 29 | 32 | 35 | 38 | 41 | 44 | 47 | 50 | 52 | 55 | 57 | 60 | 62 | 65 | 66 | 69 | 71 |
| Comfortable (%) | 22 | 24 | 25 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 33 | 34 | 34 | 34 | 34 | 33 | 33 | 33 | 32 | 32 | 32 | 31 | 31 | 30 | 29 | 28 | 27 | 26 | 24 | 23 |
| Humid (%) | 37 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 35 | 33 | 32 | 30 | 29 | 27 | 25 | 23 | 21 | 19 | 18 | 16 | 14 | 13 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 5 |
| Muggy (%) | 27 | 25 | 24 | 22 | 20 | 19 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 6 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 1 |
| Oppressive (%) | 9 | 8 | 7 | 7 | 6 | 5 | 4 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 5 | 22 | 37 | 27 | 9 |
| 2 | 5 | 24 | 37 | 25 | 8 |
| 3 | 6 | 25 | 37 | 24 | 7 |
| 4 | 7 | 27 | 37 | 22 | 7 |
| 5 | 9 | 28 | 37 | 20 | 6 |
| 6 | 10 | 29 | 37 | 19 | 5 |
| 7 | 12 | 30 | 36 | 17 | 4 |
| 8 | 14 | 31 | 36 | 16 | 3 |
| 9 | 16 | 32 | 35 | 15 | 3 |
| 10 | 18 | 33 | 33 | 14 | 2 |
| 11 | 21 | 33 | 32 | 13 | 2 |
| 12 | 23 | 34 | 30 | 12 | 1 |
| 13 | 26 | 34 | 29 | 11 | 1 |
| 14 | 29 | 34 | 27 | 10 | 1 |
| 15 | 32 | 34 | 25 | 9 | 0 |
| 16 | 35 | 33 | 23 | 8 | 0 |
| 17 | 38 | 33 | 21 | 7 | 0 |
| 18 | 41 | 33 | 19 | 6 | 0 |
| 19 | 44 | 32 | 18 | 6 | 0 |
| 20 | 47 | 32 | 16 | 5 | 0 |
| 21 | 50 | 32 | 14 | 4 | 0 |
| 22 | 52 | 31 | 13 | 4 | 0 |
| 23 | 55 | 31 | 11 | 3 | 0 |
| 24 | 57 | 30 | 10 | 3 | 0 |
| 25 | 60 | 29 | 9 | 2 | 0 |
| 26 | 62 | 28 | 8 | 2 | 0 |
| 27 | 65 | 27 | 7 | 1 | 0 |
| 28 | 66 | 26 | 7 | 1 | 0 |
| 29 | 69 | 24 | 6 | 1 | 0 |
| 30 | 71 | 23 | 5 | 1 | 0 |
Wind in September
Winds average 7 km/h in September.
Across September, daily wind ranges from about 7 km/h on the calmest days to 7 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) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| 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 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
Sunrise & sunset in September
Daylight runs from about 12 h 54 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 72 minutes over September. Sunrise moves from 6:03 AM to 6:28 AM, and sunset from 6:54 PM to 6:07 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) | 12.9 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 11.7 |
| Sunrise (AM) | 6:03 | 6:03 | 6:04 | 6:05 | 6:06 | 6:07 | 6:08 | 6:09 | 6:10 | 6:10 | 6:11 | 6:12 | 6:13 | 6:14 | 6:15 | 6:16 | 6:16 | 6:17 | 6:18 | 6:19 | 6:20 | 6:21 | 6:22 | 6:23 | 6:24 | 6:24 | 6:25 | 6:26 | 6:27 | 6:28 |
| Sunset (PM) | 6:54 | 6:52 | 6:51 | 6:49 | 6:48 | 6:46 | 6:44 | 6:43 | 6:41 | 6:40 | 6:38 | 6:36 | 6:35 | 6:33 | 6:32 | 6:30 | 6:28 | 6:27 | 6:25 | 6:23 | 6:22 | 6:20 | 6:19 | 6:17 | 6:15 | 6:14 | 6:12 | 6:11 | 6:09 | 6:07 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.9 | 6:03 | 6:54 |
| 2 | 12.8 | 6:03 | 6:52 |
| 3 | 12.8 | 6:04 | 6:51 |
| 4 | 12.7 | 6:05 | 6:49 |
| 5 | 12.7 | 6:06 | 6:48 |
| 6 | 12.7 | 6:07 | 6:46 |
| 7 | 12.6 | 6:08 | 6:44 |
| 8 | 12.6 | 6:09 | 6:43 |
| 9 | 12.5 | 6:10 | 6:41 |
| 10 | 12.5 | 6:10 | 6:40 |
| 11 | 12.4 | 6:11 | 6:38 |
| 12 | 12.4 | 6:12 | 6:36 |
| 13 | 12.4 | 6:13 | 6:35 |
| 14 | 12.3 | 6:14 | 6:33 |
| 15 | 12.3 | 6:15 | 6:32 |
| 16 | 12.2 | 6:16 | 6:30 |
| 17 | 12.2 | 6:16 | 6:28 |
| 18 | 12.2 | 6:17 | 6:27 |
| 19 | 12.1 | 6:18 | 6:25 |
| 20 | 12.1 | 6:19 | 6:23 |
| 21 | 12.0 | 6:20 | 6:22 |
| 22 | 12.0 | 6:21 | 6:20 |
| 23 | 11.9 | 6:22 | 6:19 |
| 24 | 11.9 | 6:23 | 6:17 |
| 25 | 11.9 | 6:24 | 6:15 |
| 26 | 11.8 | 6:24 | 6:14 |
| 27 | 11.8 | 6:25 | 6:12 |
| 28 | 11.7 | 6:26 | 6:11 |
| 29 | 11.7 | 6:27 | 6:09 |
| 30 | 11.7 | 6:28 | 6:07 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.06 kWh/m².
For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 5.71 kWh/m² in May across the year — September's 4.06 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 3.9 |
| 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 | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.0 | Bright |
| 2 | 4.0 | Bright |
| 3 | 4.0 | Bright |
| 4 | 4.0 | Bright |
| 5 | 4.0 | Bright |
| 6 | 4.0 | Bright |
| 7 | 4.1 | Bright |
| 8 | 4.1 | Bright |
| 9 | 4.1 | Bright |
| 10 | 4.1 | Bright |
| 11 | 4.1 | Bright |
| 12 | 4.0 | Bright |
| 13 | 4.0 | Bright |
| 14 | 4.0 | Bright |
| 15 | 4.0 | Bright |
| 16 | 4.0 | Bright |
| 17 | 4.0 | Bright |
| 18 | 4.0 | Bright |
| 19 | 4.0 | Bright |
| 20 | 4.0 | Bright |
| 21 | 4.0 | Bright |
| 22 | 4.0 | Bright |
| 23 | 4.0 | Bright |
| 24 | 4.0 | Bright |
| 25 | 4.0 | Moderate |
| 26 | 4.0 | Moderate |
| 27 | 4.0 | Moderate |
| 28 | 4.0 | Moderate |
| 29 | 4.0 | Moderate |
| 30 | 3.9 | Moderate |
Hazard calendar for Hongch’ŏn
None of Hongch’ŏn's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Hongch’ŏn's rainy season runs July–August, when most of the year's rain falls.
Is September a good time to visit Hongch’ŏn?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit Hongch’ŏn for general sightseeing.
What to pack for Hongch’ŏn in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Hongch’ŏn sees daytime highs around 24°C and nights near 15°C. Worth packing: light clothes and rain gear. About 8 days see rain.
UV index in Hongch’ŏn in September
Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Hongch’ŏn peaks around August 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. 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 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 4 | 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 | 4 | 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 Hongch’ŏn in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Hongch’ŏn is worst in March — around 57 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (August, 31 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) | 48 | 49 | 57 | 51 | 46 | 41 | 33 | 31 | 32 | 41 | 46 | 43 |
| Level | Poor | Poor | Unhealthy | Poor | Poor | Poor | Moderate | Moderate | Moderate | Poor | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 48 | Poor |
| Feb | 49 | Poor |
| Mar | 57 | Unhealthy |
| Apr | 51 | Poor |
| May | 46 | Poor |
| Jun | 41 | Poor |
| Jul | 33 | Moderate |
| Aug | 31 | Moderate |
| Sep | 32 | Moderate |
| Oct | 41 | Poor |
| Nov | 46 | Poor |
| Dec | 43 | Poor |
Where is Hongch’ŏn?
Hongch’ŏn sits at 37.7°N, 127.9°E, 137 m above sea level, in South Korea. The nearest listed city is Chuncheon, 24 km away.
Topography around Hongch’ŏn
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hongch’ŏn.
Within 3 km, the terrain around Hongch’ŏn has significant variations in elevation — a maximum elevation change of 291 m around an average of 199 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 839 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,671 m.
The land around Hongch’ŏn is covered by trees (60%) within 3 km, trees (85%) within 16 km, and trees (84%) 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 Hongch’ŏn (37.6918°, 127.8857°, elevation 137 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).