Best Time to Visit Kosan: Month-by-Month Guide
Best months for Kosan: September, May, October, June.
- Best months for Kosan: September, May, October, June.
- Peak season is August, July, June. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
- Shoulder season: May, September, October. Good weather without the busiest period.
- Wettest months: July, August, June.
- The least pleasant month is December (score 4.4).
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -2°C | -15°C | 24 mm | 5 | – | – | 4.4 |
| February | 1°C | -11°C | 32 mm | 5 | – | – | 4.4 |
| March | 7°C | -3°C | 43 mm | 8 | – | – | 5.2 |
| April | 14°C | 3°C | 72 mm | 8 | – | – | 6.7 |
| May | 20°C | 9°C | 104 mm | 10 | – | – | 7.3 |
| June | 23°C | 14°C | 130 mm | 12 | – | – | 7.2 |
| July | 25°C | 18°C | 270 mm | 18 | – | – | 6.1 |
| August | 26°C | 18°C | 245 mm | 17 | – | – | 6.1 |
| September | 22°C | 12°C | 122 mm | 9 | – | – | 7.6 |
| October | 16°C | 5°C | 52 mm | 6 | – | – | 7.3 |
| November | 8°C | -2°C | 50 mm | 8 | – | – | 5.5 |
| December | 0°C | -10°C | 30 mm | 5 | – | – | 4.4 |
Frequently asked questions
When is the best time to visit Kosan?
The best months are September, May, October, June.
When is the rainy season in Kosan?
The wettest months are July, August, June.