Temperature
Cold by day, cold at night.
Cold conditions during longer outdoor plans and wind on ridges and viewpoints are the main limitations.

Cold by day, cold at night.
Rain is frequent. About 15 wet days, fewer than in most months.
Cloudier spells limit sunshine.
Humidity is rarely noticeable in the cool air.
In December, days and nights feel about the same, around 29°.
Mostly cloudy skies this month.
Wind is more noticeable in December; open areas can feel blustery.
December stays around 44°F through the day and night.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 43 | 38 | 5.4 | 16 | 5.7 | 66 |
| Feb | 44 | 39 | 5.8 | 15 | 6.6 | 67 |
| Mar | 48 | 44 | 7.3 | 16 | 7.2 | 68 |
| Apr | 53 | 49 | 9.1 | 15 | 8.5 | 70 |
| May | 57 | 53 | 13.5 | 18 | 8.8 | 75 |
| Jun | 62 | 59 | 16.7 | 18 | 7.4 | 84 |
| Jul | 66 | 64 | 7.8 | 18 | 10.8 | 86 |
| Aug | 67 | 65 | 8.7 | 17 | 11.2 | 83 |
| Sep | 66 | 64 | 5.5 | 17 | 9.6 | 79 |
| Oct | 61 | 58 | 7.4 | 15 | 8.3 | 71 |
| Nov | 54 | 50 | 5.7 | 14 | 7.1 | 66 |
| Dec | 46 | 41 | 4.8 | 15 | 6.1 | 65 |
Similar climates
Want a side-by-side climate view? Compare Yakushima with Pucon.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology