Kosan in May
7.3out of 10
Possible, with caveats
Mild: highs around 20°C. Frequent rain: about 10 rainy days.
20°CAvg high
9°CAvg low
10Rainy days (104 mm)
14:07 hDaylight
05:23Sunrise · 19:30 Sunset
Why this score
- Mild: highs around 20°C
- Frequent rain: about 10 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in May varies a lot between years (±3.6 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
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
How hot is Kosan in May?
Daytime highs average 20°C and nights about 9°C.
When is the best time to visit Kosan?
The best months are September, May, October, June.