Cheonan weather in July
In July, Cheonan sees average daytime highs of 29°C and overnight lows near 22°C, with 265 mm of rain across 16.2 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.
Highs climb over the month, from about 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 16% of the time in July, and the air most often feels oppressive.
Daylight stretches from about 14 h 30 min at the start of July to 13 h 54 min by month's end. Set against the rest of the year, July is Cheonan's 12th-clearest and 6th-windiest month. For the whole year in context, see Cheonan's year-round climate.
- Daytime high
- 29°
- 2nd warmest
- Overnight low
- 22°
- 11th coldest
- Rainfall
- 265 mm
- 16.2 wet days
- Daylight
- 14 h 18 min
- 5:28 AM – 7:46 PM
- Cloud cover
- 74%
- 12th clearest
- Wind
- 9 km/h
- 6th windiest
- Solar energy
- 4.46 kWh/m²
- Travel score
- 4.5
- out of 10
Cheonan is big city of South Korea.
- Density
- 1,035/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in July
Highs climb over the month, from about 28°C in the first days to 30°C by the end.
A typical July day in Cheonan reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 33°C. Set against its neighbours, July runs about 1°C warmer than June and on par with August.
| 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) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 |
| Avg low (°C) | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 20 |
| 2 | 28 | 21 |
| 3 | 28 | 21 |
| 4 | 28 | 21 |
| 5 | 28 | 21 |
| 6 | 28 | 21 |
| 7 | 28 | 21 |
| 8 | 28 | 21 |
| 9 | 29 | 21 |
| 10 | 29 | 21 |
| 11 | 29 | 22 |
| 12 | 29 | 22 |
| 13 | 29 | 22 |
| 14 | 29 | 22 |
| 15 | 29 | 22 |
| 16 | 29 | 22 |
| 17 | 29 | 22 |
| 18 | 29 | 22 |
| 19 | 29 | 22 |
| 20 | 30 | 23 |
| 21 | 30 | 23 |
| 22 | 30 | 23 |
| 23 | 30 | 23 |
| 24 | 30 | 23 |
| 25 | 30 | 23 |
| 26 | 30 | 23 |
| 27 | 30 | 23 |
| 28 | 30 | 23 |
| 29 | 30 | 23 |
| 30 | 31 | 23 |
| 31 | 31 | 23 |
How July really feels in Cheonan
Once humidity and wind are folded in, July averages 13 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Cheonan weather by month
How July compares with the rest of the year at a glance. July is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 3° / -5° | 22 | 4.2 | 2.2 | 9.8 | 0.0 |
| Feb | 6° / -4° | 30 | 4.3 | 1.6 | 10.6 | 0.5 |
| Mar | 12° / 1° | 47 | 6.5 | 1.2 | 11.7 | 3.4 |
| Apr | 19° / 7° | 77 | 7.2 | 0 | 12.9 | 6.4 |
| May | 24° / 13° | 89 | 7.5 | 0 | 13.9 | 7.3 |
| Jun | 28° / 18° | 125 | 8.6 | 0 | 14.5 | 6.2 |
| Jul | 29° / 22° | 265 | 16.2 | 0 | 14.3 | 4.5 |
| Aug | 30° / 22° | 237 | 15.4 | 0 | 13.4 | 4.5 |
| Sep | 26° / 17° | 139 | 8.6 | 0 | 12.2 | 6.9 |
| Oct | 20° / 10° | 58 | 4.8 | 0 | 11 | 7.3 |
| Nov | 12° / 3° | 45 | 6.5 | 0.2 | 10 | 3.8 |
| Dec | 5° / -3° | 24 | 5 | 1.6 | 9.5 | 0.3 |
Cloud cover in July
The sky is clear or mostly clear about 16% of the time in July, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 12% of July, with mostly cloudy or overcast conditions the remaining 72%.
| 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 (%) | 27 | 26 | 25 | 25 | 25 | 23 | 23 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 26 | 26 | 28 | 28 | 29 | 30 | 30 | 30 | 32 | 33 | 33 | 34 | 34 | 36 | 36 | 37 |
| Cloudier (%) | 73 | 74 | 75 | 75 | 75 | 77 | 77 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 74 | 74 | 72 | 72 | 71 | 70 | 70 | 70 | 68 | 67 | 67 | 66 | 66 | 64 | 64 | 63 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 27 | 73 |
| 2 | 26 | 74 |
| 3 | 25 | 75 |
| 4 | 25 | 75 |
| 5 | 25 | 75 |
| 6 | 23 | 77 |
| 7 | 23 | 77 |
| 8 | 24 | 76 |
| 9 | 24 | 76 |
| 10 | 24 | 76 |
| 11 | 24 | 76 |
| 12 | 25 | 75 |
| 13 | 25 | 75 |
| 14 | 25 | 75 |
| 15 | 25 | 75 |
| 16 | 26 | 74 |
| 17 | 26 | 74 |
| 18 | 28 | 72 |
| 19 | 28 | 72 |
| 20 | 29 | 71 |
| 21 | 30 | 70 |
| 22 | 30 | 70 |
| 23 | 30 | 70 |
| 24 | 32 | 68 |
| 25 | 33 | 67 |
| 26 | 33 | 67 |
| 27 | 34 | 66 |
| 28 | 34 | 66 |
| 29 | 36 | 64 |
| 30 | 36 | 64 |
| 31 | 37 | 63 |
Chance of precipitation in July
Cheonan gets around 265 mm of rain over 16.2 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 52% and peaks near 55% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 53 | 53 | 54 | 54 | 54 | 55 | 55 | 55 | 55 | 55 | 54 | 54 | 53 | 52 | 52 | 51 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Rain chance (%) | |
|---|---|
| 1 | 46 |
| 2 | 47 |
| 3 | 48 |
| 4 | 49 |
| 5 | 50 |
| 6 | 51 |
| 7 | 52 |
| 8 | 53 |
| 9 | 53 |
| 10 | 53 |
| 11 | 54 |
| 12 | 54 |
| 13 | 54 |
| 14 | 55 |
| 15 | 55 |
| 16 | 55 |
| 17 | 55 |
| 18 | 55 |
| 19 | 54 |
| 20 | 54 |
| 21 | 53 |
| 22 | 52 |
| 23 | 52 |
| 24 | 51 |
| 25 | 50 |
| 26 | 50 |
| 27 | 50 |
| 28 | 50 |
| 29 | 50 |
| 30 | 50 |
| 31 | 50 |
Humidity in July
Most of July feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the oppressive band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 89% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 2 | 1 | 1 | 1 | 1 | 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 | 0 |
| Comfortable (%) | 8 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Humid (%) | 22 | 20 | 19 | 17 | 16 | 15 | 14 | 13 | 13 | 12 | 11 | 10 | 10 | 9 | 8 | 8 | 7 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 3 |
| Muggy (%) | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 41 | 40 | 39 | 38 | 36 | 35 | 34 | 32 | 31 | 30 | 28 | 27 | 25 | 24 | 22 | 21 | 20 | 18 | 18 | 17 | 16 | 16 |
| Oppressive (%) | 26 | 28 | 30 | 32 | 33 | 35 | 37 | 38 | 39 | 41 | 42 | 44 | 45 | 47 | 49 | 50 | 52 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 61 | 62 | 62 | 62 | 62 | 60 |
| Miserable (%) | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 16 | 17 | 18 | 19 | 20 | 21 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 2 | 8 | 22 | 43 | 26 | 0 |
| 2 | 1 | 7 | 20 | 43 | 28 | 1 |
| 3 | 1 | 6 | 19 | 43 | 30 | 1 |
| 4 | 1 | 6 | 17 | 43 | 32 | 1 |
| 5 | 1 | 5 | 16 | 43 | 33 | 2 |
| 6 | 0 | 5 | 15 | 43 | 35 | 2 |
| 7 | 0 | 4 | 14 | 43 | 37 | 2 |
| 8 | 0 | 4 | 13 | 42 | 38 | 3 |
| 9 | 0 | 4 | 13 | 42 | 39 | 3 |
| 10 | 0 | 4 | 12 | 41 | 41 | 3 |
| 11 | 0 | 3 | 11 | 40 | 42 | 4 |
| 12 | 0 | 3 | 10 | 39 | 44 | 4 |
| 13 | 0 | 3 | 10 | 38 | 45 | 4 |
| 14 | 0 | 3 | 9 | 36 | 47 | 5 |
| 15 | 0 | 2 | 8 | 35 | 49 | 6 |
| 16 | 0 | 2 | 8 | 34 | 50 | 6 |
| 17 | 0 | 2 | 7 | 32 | 52 | 7 |
| 18 | 0 | 1 | 6 | 31 | 55 | 7 |
| 19 | 0 | 1 | 5 | 30 | 56 | 8 |
| 20 | 0 | 1 | 5 | 28 | 57 | 9 |
| 21 | 0 | 1 | 4 | 27 | 58 | 10 |
| 22 | 0 | 1 | 4 | 25 | 59 | 11 |
| 23 | 0 | 1 | 3 | 24 | 60 | 12 |
| 24 | 0 | 1 | 3 | 22 | 61 | 13 |
| 25 | 0 | 1 | 2 | 21 | 62 | 14 |
| 26 | 0 | 1 | 2 | 20 | 61 | 16 |
| 27 | 0 | 1 | 2 | 18 | 62 | 17 |
| 28 | 0 | 0 | 2 | 18 | 62 | 18 |
| 29 | 0 | 0 | 2 | 17 | 62 | 19 |
| 30 | 0 | 0 | 2 | 16 | 62 | 20 |
| 31 | 0 | 0 | 3 | 16 | 60 | 21 |
Wind in July
Winds average 9 km/h in July.
Across July, daily wind ranges from about 9 km/h on the calmest days to 9 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) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| 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 | 9 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 9 | calm |
| 10 | 9 | calm |
| 11 | 9 | calm |
| 12 | 9 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
| 31 | 9 | calm |
Sunrise & sunset in July
Daylight runs from about 14 h 30 min at the start of July to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 36 minutes over July. Sunrise moves from 5:20 AM to 5:40 AM, and sunset from 7:50 PM to 7:35 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) | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 14.4 | 14.4 | 14.4 | 14.4 | 14.4 | 14.4 | 14.4 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.2 | 14.2 | 14.2 | 14.2 | 14.1 | 14.1 | 14.1 | 14.1 | 14.0 | 14.0 | 14.0 | 14.0 | 13.9 |
| Sunrise (AM) | 5:20 | 5:20 | 5:21 | 5:21 | 5:22 | 5:22 | 5:23 | 5:23 | 5:24 | 5:24 | 5:25 | 5:26 | 5:26 | 5:27 | 5:28 | 5:28 | 5:29 | 5:30 | 5:30 | 5:31 | 5:32 | 5:33 | 5:33 | 5:34 | 5:35 | 5:36 | 5:36 | 5:37 | 5:38 | 5:39 | 5:40 |
| Sunset (PM) | 7:50 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:49 | 7:48 | 7:48 | 7:48 | 7:47 | 7:47 | 7:47 | 7:46 | 7:46 | 7:45 | 7:45 | 7:44 | 7:44 | 7:43 | 7:42 | 7:42 | 7:41 | 7:40 | 7:40 | 7:39 | 7:38 | 7:37 | 7:36 | 7:35 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.5 | 5:20 | 7:50 |
| 2 | 14.5 | 5:20 | 7:49 |
| 3 | 14.5 | 5:21 | 7:49 |
| 4 | 14.5 | 5:21 | 7:49 |
| 5 | 14.5 | 5:22 | 7:49 |
| 6 | 14.4 | 5:22 | 7:49 |
| 7 | 14.4 | 5:23 | 7:49 |
| 8 | 14.4 | 5:23 | 7:49 |
| 9 | 14.4 | 5:24 | 7:48 |
| 10 | 14.4 | 5:24 | 7:48 |
| 11 | 14.4 | 5:25 | 7:48 |
| 12 | 14.4 | 5:26 | 7:47 |
| 13 | 14.3 | 5:26 | 7:47 |
| 14 | 14.3 | 5:27 | 7:47 |
| 15 | 14.3 | 5:28 | 7:46 |
| 16 | 14.3 | 5:28 | 7:46 |
| 17 | 14.3 | 5:29 | 7:45 |
| 18 | 14.3 | 5:30 | 7:45 |
| 19 | 14.2 | 5:30 | 7:44 |
| 20 | 14.2 | 5:31 | 7:44 |
| 21 | 14.2 | 5:32 | 7:43 |
| 22 | 14.2 | 5:33 | 7:42 |
| 23 | 14.1 | 5:33 | 7:42 |
| 24 | 14.1 | 5:34 | 7:41 |
| 25 | 14.1 | 5:35 | 7:40 |
| 26 | 14.1 | 5:36 | 7:40 |
| 27 | 14.0 | 5:36 | 7:39 |
| 28 | 14.0 | 5:37 | 7:38 |
| 29 | 14.0 | 5:38 | 7:37 |
| 30 | 14.0 | 5:39 | 7:36 |
| 31 | 13.9 | 5:40 | 7:35 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 4.46 kWh/m².
For context, solar energy here swings from a low near 2.31 kWh/m² to a high of 5.88 kWh/m² in May across the year — July's 4.46 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) | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 |
| 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.6 | Bright |
| 2 | 4.6 | Bright |
| 3 | 4.5 | Bright |
| 4 | 4.5 | Bright |
| 5 | 4.5 | Bright |
| 6 | 4.5 | Bright |
| 7 | 4.4 | Bright |
| 8 | 4.4 | Bright |
| 9 | 4.4 | Bright |
| 10 | 4.4 | Bright |
| 11 | 4.4 | Bright |
| 12 | 4.4 | Bright |
| 13 | 4.4 | Bright |
| 14 | 4.4 | Bright |
| 15 | 4.4 | Bright |
| 16 | 4.4 | Bright |
| 17 | 4.5 | Bright |
| 18 | 4.5 | Bright |
| 19 | 4.5 | Bright |
| 20 | 4.5 | Bright |
| 21 | 4.5 | Bright |
| 22 | 4.5 | Bright |
| 23 | 4.6 | Bright |
| 24 | 4.6 | Bright |
| 25 | 4.6 | Bright |
| 26 | 4.6 | Bright |
| 27 | 4.6 | Bright |
| 28 | 4.6 | Bright |
| 29 | 4.6 | Bright |
| 30 | 4.6 | Bright |
| 31 | 4.6 | Bright |
Hazard calendar for Cheonan
In July, Cheonan sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Cheonan sits in the Pacific typhoon belt; the season peaks July–October.
Cheonan's rainy season runs June–September, when most of the year's rain falls.
Is July a good time to visit Cheonan?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is a reasonable time to visit Cheonan for sightseeing.
What to pack for Cheonan in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Cheonan sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 16 days see rain.
Sea temperature near Cheonan in July
The nearest coast averages about 21°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 59 km away) is warmest in August at about 23°C and coldest in February near 4°C.
It's comfortable for a long swim from Jul 12 to Oct 14 — 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 | 16 | 21 | 23 | 23 | 20 | 15 | 10 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 6 | Bracing |
| Feb | 4 | Bracing |
| Mar | 5 | Bracing |
| Apr | 8 | Bracing |
| May | 12 | Bracing |
| Jun | 16 | Cool |
| Jul | 21 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 23 | Refreshing |
| Oct | 20 | Cool |
| Nov | 15 | Cool |
| Dec | 10 | Bracing |
UV index in Cheonan in July
Clear-sky midday UV in July peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Cheonan peaks around August 13 at about 8 (very high) — sunscreen, a hat and midday shade are essential. 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 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 6 | 7 | 8 | 8 | 7 | 5 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | High | High | Very high | Very high | Very high | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 6 | High |
| Jun | 7 | High |
| Jul | 8 | Very high |
| Aug | 8 | Very high |
| Sep | 7 | Very high |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Cheonan in July
Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.
Air quality in Cheonan is worst in March — around 80 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (July, 45 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) | 69 | 72 | 80 | 65 | 58 | 54 | 45 | 45 | 56 | 67 | 72 | 65 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Unhealthy | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 69 | Unhealthy |
| Feb | 72 | Unhealthy |
| Mar | 80 | Unhealthy |
| Apr | 65 | Unhealthy |
| May | 58 | Unhealthy |
| Jun | 54 | Poor |
| Jul | 45 | Poor |
| Aug | 45 | Poor |
| Sep | 56 | Unhealthy |
| Oct | 67 | Unhealthy |
| Nov | 72 | Unhealthy |
| Dec | 65 | Unhealthy |
Where is Cheonan?
Cheonan sits at 36.8°N, 127.2°E, 40 m above sea level, in South Korea. The nearest listed city is Seonghwan, 12 km away.
Topography around Cheonan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Cheonan.
Within 3 km, the terrain around Cheonan has significant variations in elevation — a maximum elevation change of 287 m around an average of 67 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 602 m; within 80 km, large variations in elevation — a maximum elevation change of 1,032 m.
The land around Cheonan is covered by artificial surfaces (64%) and trees (26%) within 3 km, trees (51%), cropland (23%) and artificial surfaces (20%) within 16 km, and trees (55%) and cropland (22%) 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 Cheonan (36.8065°, 127.1522°, elevation 40 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).