Best Time to Visit Koesan: Month-by-Month Guide
Best months for Koesan: May, October, June, September.
- Best months for Koesan: May, October, June, September.
- Peak season is August, July, June. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
- Shoulder season: April, May, September, October. Good weather without the busiest period.
- Wettest months: July, August, June.
- The least pleasant month is January (score 4.8).
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 2°C | -7°C | 23 mm | 5 | – | – | 4.8 |
| February | 5°C | -4°C | 34 mm | 5 | – | – | 5.4 |
| March | 11°C | 1°C | 53 mm | 7 | – | – | 6.3 |
| April | 18°C | 6°C | 83 mm | 8 | – | – | 7.4 |
| May | 23°C | 12°C | 93 mm | 8 | – | – | 7.9 |
| June | 27°C | 17°C | 130 mm | 9 | – | – | 7.6 |
| July | 28°C | 21°C | 256 mm | 17 | – | – | 6.1 |
| August | 29°C | 22°C | 218 mm | 16 | – | – | 6.4 |
| September | 25°C | 16°C | 139 mm | 9 | – | – | 7.6 |
| October | 20°C | 9°C | 58 mm | 6 | – | – | 7.9 |
| November | 12°C | 2°C | 43 mm | 7 | – | – | 6.5 |
| December | 4°C | -4°C | 26 mm | 5 | – | – | 5.2 |
Frequently asked questions
When is the best time to visit Koesan?
The best months are May, October, June, September.
When is the rainy season in Koesan?
The wettest months are July, August, June.