Yakushima weather in January
In January, Yakushima sees average daytime highs of 14°C and overnight lows near 12°C, with 122 mm of rain across 13.1 wet days and about 10.3 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.
Day-to-day highs hold fairly steady near 14°C through the month. The sky is clear or mostly clear about 18% of the time in January, and the air most often feels dry.
Daylight stretches from about 10 h 06 min at the start of January to 10 h 30 min by month's end. Set against the rest of the year, January is Yakushima's 10th-clearest and 1st-windiest month. For the whole year in context, see Yakushima's year-round climate.
- Daytime high
- 14°
- 12th warmest
- Overnight low
- 12°
- 1st coldest
- Rainfall
- 122 mm
- 13.1 wet days
- Daylight
- 10 h 12 min
- 7:20 AM – 5:34 PM
- Cloud cover
- 68%
- 10th clearest
- Wind
- 30 km/h
- 1st windiest
- Solar energy
- 2.43 kWh/m²
- Travel score
- 3.8
- out of 10
Yakushima is human settlement in Japan.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 14°C through the month.
A typical January day in Yakushima reaches about 14°C in the afternoon and slips back to 12°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 19°C. Set against its neighbours, January runs about 2°C cooler than December and on par with February.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
| Avg low (°C) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 15 | 12 |
| 2 | 15 | 12 |
| 3 | 15 | 12 |
| 4 | 15 | 12 |
| 5 | 15 | 12 |
| 6 | 15 | 12 |
| 7 | 15 | 12 |
| 8 | 15 | 12 |
| 9 | 15 | 12 |
| 10 | 14 | 12 |
| 11 | 14 | 12 |
| 12 | 14 | 12 |
| 13 | 14 | 12 |
| 14 | 14 | 12 |
| 15 | 14 | 12 |
| 16 | 14 | 12 |
| 17 | 14 | 12 |
| 18 | 14 | 11 |
| 19 | 14 | 11 |
| 20 | 14 | 11 |
| 21 | 14 | 11 |
| 22 | 14 | 11 |
| 23 | 14 | 11 |
| 24 | 14 | 11 |
| 25 | 14 | 11 |
| 26 | 14 | 11 |
| 27 | 14 | 11 |
| 28 | 14 | 11 |
| 29 | 14 | 11 |
| 30 | 14 | 11 |
| 31 | 14 | 11 |
How January really feels in Yakushima
Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Yakushima weather by month
How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 14° / 12° | 122 | 13.1 | 10.3 | 3.8 |
| Feb | 15° / 12° | 126 | 12.7 | 10.9 | 4.0 |
| Mar | 17° / 14° | 182 | 14.6 | 11.8 | 4.8 |
| Apr | 19° / 17° | 190 | 12.7 | 12.7 | 5.7 |
| May | 22° / 20° | 210 | 12.9 | 13.5 | 6.1 |
| Jun | 25° / 23° | 438 | 19.6 | 13.9 | 5.1 |
| Jul | 27° / 26° | 173 | 12.6 | 13.8 | 5.9 |
| Aug | 28° / 27° | 141 | 14.7 | 13.1 | 5.4 |
| Sep | 27° / 25° | 237 | 15.8 | 12.2 | 5.7 |
| Oct | 24° / 22° | 170 | 13 | 11.3 | 6.5 |
| Nov | 20° / 18° | 149 | 12 | 10.5 | 6.1 |
| Dec | 16° / 14° | 114 | 11.8 | 10.1 | 4.9 |
Cloud cover in January
The sky is clear or mostly clear about 18% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 67%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 38 | 37 | 36 | 35 | 35 | 34 | 35 | 34 | 34 | 33 | 33 | 33 | 32 | 32 | 31 | 31 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 34 | 34 | 34 | 35 |
| Cloudier (%) | 62 | 63 | 64 | 65 | 65 | 66 | 65 | 66 | 66 | 67 | 67 | 67 | 68 | 68 | 69 | 69 | 68 | 68 | 68 | 68 | 67 | 67 | 67 | 67 | 67 | 67 | 67 | 66 | 66 | 66 | 65 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 38 | 62 |
| 2 | 37 | 63 |
| 3 | 36 | 64 |
| 4 | 35 | 65 |
| 5 | 35 | 65 |
| 6 | 34 | 66 |
| 7 | 35 | 65 |
| 8 | 34 | 66 |
| 9 | 34 | 66 |
| 10 | 33 | 67 |
| 11 | 33 | 67 |
| 12 | 33 | 67 |
| 13 | 32 | 68 |
| 14 | 32 | 68 |
| 15 | 31 | 69 |
| 16 | 31 | 69 |
| 17 | 32 | 68 |
| 18 | 32 | 68 |
| 19 | 32 | 68 |
| 20 | 32 | 68 |
| 21 | 33 | 67 |
| 22 | 33 | 67 |
| 23 | 33 | 67 |
| 24 | 33 | 67 |
| 25 | 33 | 67 |
| 26 | 33 | 67 |
| 27 | 33 | 67 |
| 28 | 34 | 66 |
| 29 | 34 | 66 |
| 30 | 34 | 66 |
| 31 | 35 | 65 |
Chance of precipitation in January
Yakushima gets around 122 mm of rain over 13.1 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 43% and peaks near 46% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 37 | 37 | 37 | 38 | 38 | 39 | 39 | 40 | 40 | 40 | 41 | 42 | 42 | 43 | 44 | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 44 |
| Rain chance (%) | |
|---|---|
| 1 | 37 |
| 2 | 37 |
| 3 | 37 |
| 4 | 38 |
| 5 | 38 |
| 6 | 39 |
| 7 | 39 |
| 8 | 40 |
| 9 | 40 |
| 10 | 40 |
| 11 | 41 |
| 12 | 42 |
| 13 | 42 |
| 14 | 43 |
| 15 | 44 |
| 16 | 45 |
| 17 | 45 |
| 18 | 46 |
| 19 | 46 |
| 20 | 46 |
| 21 | 46 |
| 22 | 46 |
| 23 | 46 |
| 24 | 46 |
| 25 | 46 |
| 26 | 45 |
| 27 | 45 |
| 28 | 45 |
| 29 | 44 |
| 30 | 44 |
| 31 | 44 |
Humidity in January
Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the dry band about 93% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 94 | 94 | 95 | 95 | 95 | 95 | 94 | 94 | 94 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 |
| Comfortable (%) | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Humid (%) | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 94 | 5 | 1 |
| 2 | 94 | 5 | 1 |
| 3 | 95 | 4 | 1 |
| 4 | 95 | 4 | 1 |
| 5 | 95 | 4 | 1 |
| 6 | 95 | 4 | 1 |
| 7 | 94 | 4 | 2 |
| 8 | 94 | 4 | 2 |
| 9 | 94 | 4 | 2 |
| 10 | 93 | 5 | 2 |
| 11 | 93 | 5 | 2 |
| 12 | 93 | 5 | 2 |
| 13 | 93 | 5 | 2 |
| 14 | 93 | 5 | 2 |
| 15 | 93 | 5 | 2 |
| 16 | 93 | 5 | 2 |
| 17 | 93 | 5 | 2 |
| 18 | 93 | 5 | 2 |
| 19 | 92 | 6 | 2 |
| 20 | 92 | 6 | 2 |
| 21 | 92 | 6 | 2 |
| 22 | 92 | 6 | 2 |
| 23 | 92 | 6 | 2 |
| 24 | 92 | 6 | 2 |
| 25 | 92 | 6 | 2 |
| 26 | 92 | 6 | 2 |
| 27 | 92 | 6 | 2 |
| 28 | 92 | 6 | 2 |
| 29 | 92 | 6 | 2 |
| 30 | 92 | 6 | 2 |
| 31 | 92 | 6 | 2 |
Wind in January
Winds average 30 km/h in January, the windiest month of the year.
Across January, daily wind ranges from about 30 km/h on the calmest days to 31 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 |
| Feels | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 30 | windy |
| 2 | 30 | windy |
| 3 | 30 | windy |
| 4 | 30 | windy |
| 5 | 30 | windy |
| 6 | 30 | windy |
| 7 | 30 | windy |
| 8 | 30 | windy |
| 9 | 30 | windy |
| 10 | 30 | windy |
| 11 | 30 | windy |
| 12 | 30 | windy |
| 13 | 30 | windy |
| 14 | 30 | windy |
| 15 | 30 | windy |
| 16 | 30 | windy |
| 17 | 30 | windy |
| 18 | 30 | windy |
| 19 | 30 | windy |
| 20 | 30 | windy |
| 21 | 30 | windy |
| 22 | 30 | windy |
| 23 | 30 | windy |
| 24 | 31 | windy |
| 25 | 31 | windy |
| 26 | 31 | windy |
| 27 | 31 | windy |
| 28 | 31 | windy |
| 29 | 30 | windy |
| 30 | 30 | windy |
| 31 | 30 | windy |
Sunrise & sunset in January
Daylight runs from about 10 h 06 min at the start of January to 10 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 24 minutes over January. Sunrise moves from 7:18 AM to 7:15 AM, and sunset from 5:23 PM to 5:47 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.3 | 10.3 | 10.4 | 10.4 | 10.4 | 10.4 | 10.4 | 10.5 | 10.5 | 10.5 | 10.5 |
| Sunrise (AM) | 7:18 | 7:19 | 7:19 | 7:19 | 7:19 | 7:19 | 7:20 | 7:20 | 7:20 | 7:20 | 7:20 | 7:20 | 7:20 | 7:20 | 7:20 | 7:20 | 7:19 | 7:19 | 7:19 | 7:19 | 7:19 | 7:18 | 7:18 | 7:18 | 7:17 | 7:17 | 7:17 | 7:16 | 7:16 | 7:15 | 7:15 |
| Sunset (PM) | 5:23 | 5:23 | 5:24 | 5:25 | 5:25 | 5:26 | 5:27 | 5:28 | 5:28 | 5:29 | 5:30 | 5:31 | 5:31 | 5:32 | 5:33 | 5:34 | 5:35 | 5:35 | 5:36 | 5:37 | 5:38 | 5:39 | 5:40 | 5:41 | 5:41 | 5:42 | 5:43 | 5:44 | 5:45 | 5:46 | 5:47 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.1 | 7:18 | 5:23 |
| 2 | 10.1 | 7:19 | 5:23 |
| 3 | 10.1 | 7:19 | 5:24 |
| 4 | 10.1 | 7:19 | 5:25 |
| 5 | 10.1 | 7:19 | 5:25 |
| 6 | 10.1 | 7:19 | 5:26 |
| 7 | 10.1 | 7:20 | 5:27 |
| 8 | 10.1 | 7:20 | 5:28 |
| 9 | 10.1 | 7:20 | 5:28 |
| 10 | 10.2 | 7:20 | 5:29 |
| 11 | 10.2 | 7:20 | 5:30 |
| 12 | 10.2 | 7:20 | 5:31 |
| 13 | 10.2 | 7:20 | 5:31 |
| 14 | 10.2 | 7:20 | 5:32 |
| 15 | 10.2 | 7:20 | 5:33 |
| 16 | 10.2 | 7:20 | 5:34 |
| 17 | 10.3 | 7:19 | 5:35 |
| 18 | 10.3 | 7:19 | 5:35 |
| 19 | 10.3 | 7:19 | 5:36 |
| 20 | 10.3 | 7:19 | 5:37 |
| 21 | 10.3 | 7:19 | 5:38 |
| 22 | 10.3 | 7:18 | 5:39 |
| 23 | 10.4 | 7:18 | 5:40 |
| 24 | 10.4 | 7:18 | 5:41 |
| 25 | 10.4 | 7:17 | 5:41 |
| 26 | 10.4 | 7:17 | 5:42 |
| 27 | 10.4 | 7:17 | 5:43 |
| 28 | 10.5 | 7:16 | 5:44 |
| 29 | 10.5 | 7:16 | 5:45 |
| 30 | 10.5 | 7:15 | 5:46 |
| 31 | 10.5 | 7:15 | 5:47 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 2.43 kWh/m².
For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 5.86 kWh/m² in July across the year — January's 2.43 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.4 | 2.4 | 2.4 | 2.4 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.4 | 2.4 | 2.4 | 2.4 | 2.4 | 2.5 | 2.5 | 2.5 | 2.5 | 2.6 | 2.6 | 2.6 | 2.6 | 2.7 | 2.7 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.4 | Moderate |
| 2 | 2.4 | Moderate |
| 3 | 2.4 | Moderate |
| 4 | 2.4 | Moderate |
| 5 | 2.3 | Moderate |
| 6 | 2.3 | Moderate |
| 7 | 2.3 | Moderate |
| 8 | 2.3 | Moderate |
| 9 | 2.3 | Moderate |
| 10 | 2.3 | Moderate |
| 11 | 2.3 | Moderate |
| 12 | 2.3 | Moderate |
| 13 | 2.3 | Moderate |
| 14 | 2.3 | Moderate |
| 15 | 2.3 | Moderate |
| 16 | 2.3 | Moderate |
| 17 | 2.4 | Moderate |
| 18 | 2.4 | Moderate |
| 19 | 2.4 | Moderate |
| 20 | 2.4 | Moderate |
| 21 | 2.4 | Moderate |
| 22 | 2.5 | Moderate |
| 23 | 2.5 | Moderate |
| 24 | 2.5 | Moderate |
| 25 | 2.5 | Moderate |
| 26 | 2.6 | Moderate |
| 27 | 2.6 | Moderate |
| 28 | 2.6 | Moderate |
| 29 | 2.6 | Moderate |
| 30 | 2.7 | Moderate |
| 31 | 2.7 | Moderate |
Hazard calendar for Yakushima
In January, Yakushima sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Yakushima sits in the Pacific typhoon belt; the season peaks July–October.
Is January a good time to visit Yakushima?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a weaker month for outdoor sightseeing in Yakushima.
What to pack for Yakushima in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Yakushima sees daytime highs around 14°C and nights near 12°C. Pack a windbreaker. Worth having: a warm layer and rain gear. About 13 days see rain.
Sea temperature near Yakushima in January
The nearest coast averages about 21°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 29°C and coldest in February near 20°C.
It's comfortable for a long swim from Feb 25 to Feb 7 — about 11.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 20 | 20 | 21 | 23 | 25 | 28 | 29 | 28 | 26 | 24 | 22 |
| Comfort | Refreshing | Cool | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Warm | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 20 | Cool |
| Mar | 20 | Refreshing |
| Apr | 21 | Refreshing |
| May | 23 | Refreshing |
| Jun | 25 | Warm |
| Jul | 28 | Warm |
| Aug | 29 | Tropical |
| Sep | 28 | Warm |
| Oct | 26 | Warm |
| Nov | 24 | Warm |
| Dec | 22 | Refreshing |
UV index in Yakushima in January
Clear-sky midday UV in January peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Yakushima peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 4 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 6 | 7 | 9 | 9 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Level | Moderate | High | Very high | Very high | Very high | Extreme | Extreme | Very high | Extreme | High | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 6 | High |
| Mar | 7 | Very high |
| Apr | 9 | Very high |
| May | 9 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 10 | Very high |
| Sep | 10 | Extreme |
| Oct | 7 | High |
| Nov | 5 | High |
| Dec | 4 | Moderate |
Air quality in Yakushima in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in Yakushima is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 10 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 13 | 16 | 20 | 21 | 19 | 13 | 10 | 11 | 10 | 10 | 11 | 10 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 16 | Moderate |
| Mar | 20 | Moderate |
| Apr | 21 | Moderate |
| May | 19 | Moderate |
| Jun | 13 | Moderate |
| Jul | 10 | Good |
| Aug | 11 | Good |
| Sep | 10 | Good |
| Oct | 10 | Good |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is Yakushima?
Yakushima sits at 30.4°N, 130.6°E, 0 m above sea level, in Japan. The nearest listed city is Nishinoomote, 51 km away.
Topography around Yakushima
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Yakushima.
Within 3 km, the terrain around Yakushima has large variations in elevation — a maximum elevation change of 608 m around an average of 81 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,916 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,893 m.
The land around Yakushima is covered by trees (54%) and water (44%) within 3 km, water (67%) and trees (33%) within 16 km, and water (93%) within 80 km.
Japan travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 100 V · 50 / 60 Hz
- Prices
- ≈ 65% of US
- price level, 2025
- GDP per capita
- $35,951
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.2
- per 100k, 2023
- Road deaths
- 3.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very low
- EF EPI 446
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Yakushima (30.388°, 130.6492°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).