Yakushima weather by month & the best time to visit
🇯🇵 Japan · beach resort · humid subtropical climate
The best time to visit Yakushima is April — its sunniest month (Sunshine Score 61/100), with May and June close behind. Yakushima averages about 1,647 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 220 mm of rain in April.
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- Sun hours / year
- 1,647
- Sunniest month
- April
- Peak score
- 61/100
- Rain / year
- 2,982 mm
- Midday UV at peak
- 9 (very high)
- Sea at warmest
- 31°C / 88°F
- Population
- 18k
- Elevation
- 27 m
When is the best time to visit Yakushima?
For sunshine, the best time to visit Yakushima is April, then May and June. The dullest month is January (37/100, 137 mm of rain). The full month-by-month picture is in the table below.
How sunny is Yakushima?
Yakushima isn't a sunny place by world standards: about 1,647 hours of sunshine a year. April (61/100) is noticeably better than January (37). It ranks #57 of 79 destinations in Japan for annual sunshine, below the national median of 1,773 hours. Rain has a clear season: the wettest stretch, around June, carries about 41% of the annual 2,982 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 37 | 15° / 59°F | 13° / 55°F | 137 mm | 3 | 23° / 73°F |
| February | 40 | 16° / 61°F | 13° / 55°F | 160 mm | 4 | 22° / 72°F |
| March | 50 | 18° / 64°F | 15° / 59°F | 196 mm | 5 | 22° / 72°F |
| April | 61 | 20° / 68°F | 18° / 64°F | 220 mm | 6 | 22° / 72°F |
| May | 61 | 23° / 73°F | 21° / 70°F | 277 mm | 7 | 25° / 77°F |
| June | 61 | 25° / 77°F | 24° / 75°F | 588 mm | 6 | 27° / 81°F |
| July | 61 | 28° / 82°F | 27° / 81°F | 352 mm | 9 | 30° / 86°F |
| August | 61 | 29° / 84°F | 28° / 82°F | 219 mm | 9 | 31° / 88°F |
| September | 61 | 28° / 82°F | 27° / 81°F | 310 mm | 7 | 30° / 86°F |
| October | 61 | 25° / 77°F | 23° / 73°F | 201 mm | 6 | 28° / 82°F |
| November | 61 | 21° / 70°F | 19° / 66°F | 170 mm | 4 | 26° / 79°F |
| December | 45 | 17° / 63°F | 15° / 59°F | 152 mm | 3 | 23° / 73°F |
Sea temperature in Yakushima by month
The sea off Yakushima is warmest in August at around 31°C / 88°F, and coolest in February at 22°C / 72°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Yakushima on the interactive sunshine globe →
Nearby places for sunshine
- Kagoshima Japan · 158 km · best in Oct · 1,843 h sun/yr
- Miyazaki Japan · 182 km · best in Apr · 1,853 h sun/yr
- Amami Japan · 236 km · best in Dec · 1,650 h sun/yr
- Kumamoto Japan · 273 km · best in Oct · 1,845 h sun/yr
- Nagasaki Japan · 290 km · best in Oct · 1,779 h sun/yr
- Saga Japan · 309 km · best in Oct · 1,752 h sun/yr
Nearest destinations
- Tanegashima Japan · 40 km · 1,648 h sun/yr · best in May
- Amakusa Japan · 238 km · 1,845 h sun/yr · best in Oct
- Kikai Japan · 240 km · 1,650 h sun/yr · best in Dec
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