Best time to visit Yesan
The best time to visit Yesan is April–May and October, judged on twenty years of weather records and the events worth going for.
Yesan, Chungcheongnam-do, South Korea
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 3.2 °C / 38 °F | -4.9 °C / 23 °F | 18 mm / 0.7 in | neither best nor good |
| February | 5.8 °C / 42 °F | -3.1 °C / 26 °F | 26 mm / 1 in | neither best nor good |
| March | 12 °C / 54 °F | 1.6 °C / 35 °F | 43 mm / 1.7 in | good month |
| April | 18.4 °C / 65 °F | 7.1 °C / 45 °F | 66 mm / 2.6 in | best month |
| May | 24.2 °C / 76 °F | 13 °C / 55 °F | 76 mm / 3 in | best month |
| June | 28.3 °C / 83 °F | 18.6 °C / 65 °F | 105 mm / 4.1 in | good month |
| July | 29.7 °C / 85 °F | 23 °C / 73 °F | 256 mm / 10.1 in | neither best nor good |
| August | 30.5 °C / 87 °F | 23.4 °C / 74 °F | 209 mm / 8.2 in | neither best nor good |
| September | 26.4 °C / 80 °F | 18 °C / 64 °F | 148 mm / 5.8 in | good month |
| October | 20.6 °C / 69 °F | 10.8 °C / 51 °F | 60 mm / 2.4 in | best month |
| November | 13.1 °C / 56 °F | 4 °C / 39 °F | 45 mm / 1.8 in | good month |
| December | 5 °C / 41 °F | -2.8 °C / 27 °F | 27 mm / 1.1 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: good
- AApril: best
- MMay: best
- JJune: good
- JJuly: neither
- AAugust: neither
- SSeptember: good
- OOctober: best
- NNovember: good
- DDecember: neither
- Best
- April–May, October
- Good
- March, June, September, November
Why these months
March · good
In its favour: precipitation 43 mm / 1.7 in, share of daylight that is sunny 79%, wet days 5.8 days, days with heavy rain 1.5 days, relative humidity 64%.
Against: feels like (high) 8.9 °C / 48 °F, average daily high 12 °C / 54 °F, average daily low 1.6 °C / 35 °F.
April · best
In its favour: feels like (high) 16.4 °C / 62 °F, average daily high 18.4 °C / 65 °F, share of daylight that is sunny 75%, precipitation 66 mm / 2.6 in, wet days 7.2 days, days with heavy rain 2.3 days, relative humidity 61%, average daily low 7.1 °C / 45 °F.
May · best
In its favour: feels like (high) 23.8 °C / 75 °F, average daily high 24.2 °C / 76 °F, share of daylight that is sunny 72%, precipitation 76 mm / 3 in, wet days 7.2 days, days with heavy rain 3 days, average daily low 13 °C / 55 °F, relative humidity 64%.
June · good
In its favour: share of daylight that is sunny 69%, feels like (high) 30.2 °C / 86 °F, average daily high 28.3 °C / 83 °F, precipitation 105 mm / 4.1 in, wet days 7.8 days, days with heavy rain 3.2 days, average daily low 18.6 °C / 65 °F, relative humidity 70%.
September · good
In its favour: feels like (high) 28.3 °C / 83 °F, share of daylight that is sunny 68%, average daily high 26.4 °C / 80 °F, wet days 8.9 days, average daily low 18 °C / 64 °F, days with heavy rain 4.2 days.
Against: precipitation 148 mm / 5.8 in, relative humidity 77%.
October · best
In its favour: feels like (high) 19.6 °C / 67 °F, average daily high 20.6 °C / 69 °F, precipitation 60 mm / 2.4 in, share of daylight that is sunny 78%, wet days 5.6 days, days with heavy rain 1.9 days, average daily low 10.8 °C / 51 °F, relative humidity 73%.
November · good
In its favour: precipitation 45 mm / 1.8 in, share of daylight that is sunny 74%, days with heavy rain 1.2 days, wet days 6.7 days, average daily high 13.1 °C / 56 °F, relative humidity 71%, average daily low 4 °C / 39 °F.
Against: feels like (high) 10.3 °C / 51 °F.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: best
- AApril: best
- MMay: best
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: best
- NNovember: best
- DDecember: neither
- Best
- March–May, October–November
Why these months
March · best
In its favour: average daily high 12 °C / 54 °F, precipitation 43 mm / 1.7 in, wet days 5.8 days, days with heavy rain 1.5 days, share of daylight that is sunny 79%, daylight per day 12 h, feels like (high) 8.9 °C / 48 °F, average daily low 1.6 °C / 35 °F, wind (daily max) 17 km/h / 10 mph.
April · best
In its favour: average daily high 18.4 °C / 65 °F, precipitation 66 mm / 2.6 in, wet days 7.2 days, days with heavy rain 2.3 days, feels like (high) 16.4 °C / 62 °F, average daily low 7.1 °C / 45 °F, share of daylight that is sunny 75%, daylight per day 13.1 h, wind (daily max) 17 km/h / 10 mph.
May · best
In its favour: precipitation 76 mm / 3 in, average daily high 24.2 °C / 76 °F, wet days 7.2 days, average daily low 13 °C / 55 °F, share of daylight that is sunny 72%, daylight per day 14.1 h, days with heavy rain 3 days, feels like (high) 23.8 °C / 75 °F, wind (daily max) 16 km/h / 10 mph.
October · best
In its favour: average daily high 20.6 °C / 69 °F, precipitation 60 mm / 2.4 in, wet days 5.6 days, days with heavy rain 1.9 days, feels like (high) 19.6 °C / 67 °F, average daily low 10.8 °C / 51 °F, share of daylight that is sunny 78%, daylight per day 11.3 h, wind (daily max) 13 km/h / 8 mph.
November · best
In its favour: average daily high 13.1 °C / 56 °F, precipitation 45 mm / 1.8 in, wet days 6.7 days, days with heavy rain 1.2 days, average daily low 4 °C / 39 °F, share of daylight that is sunny 74%, feels like (high) 10.3 °C / 51 °F, wind (daily max) 15 km/h / 9 mph, daylight per day 10.2 h.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is 곤지암스키장, Konjiam Resort, 82 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | -1.2 °C | 1.7 °C | 8.9 °C | 16.4 °C | 23.8 °C | 30.2 °C | 33.9 °C | 35.2 °C | 28.3 °C | 19.6 °C | 10.3 °C | 1.1 °C |
| Days with heavy rain | 0.3 days | 0.7 days | 1.5 days | 2.3 days | 3 days | 3.2 days | 7.2 days | 6.3 days | 4.2 days | 1.9 days | 1.2 days | 0.6 days |
| Time rain usually falls | 10 am | 5 pm | 11 pm | 8 am | 5 am | 3 pm | 3 pm | 3 pm | 6 am | 3 pm | 4 am | 2 pm |
| Sunshine per day | 7.6 h | 8.4 h | 9.4 h | 9.9 h | 10.1 h | 10.2 h | 8.2 h | 8.9 h | 8.5 h | 8.8 h | 7.6 h | 7.2 h |
| Relative humidity | 69% | 66% | 64% | 61% | 64% | 70% | 80% | 80% | 77% | 73% | 71% | 71% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 27.4 µg/m³ | 25 µg/m³ | 29.3 µg/m³ | 29.8 µg/m³ | 28 µg/m³ | 29 µg/m³ | 21.1 µg/m³ | 25.2 µg/m³ | 20.6 µg/m³ | 21.3 µg/m³ | 23.9 µg/m³ | 21.8 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 44.7 µg/m³ | 40 µg/m³ | 43.7 µg/m³ | 47.2 µg/m³ | 43.1 µg/m³ | 46 µg/m³ | 36.1 µg/m³ | 43.3 µg/m³ | 34.2 µg/m³ | 33.4 µg/m³ | 38.7 µg/m³ | 37.3 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.