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Yakushima weather by month
Check out Yakushima weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Yakushima (°C)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 11 |
11 |
14 |
18 |
21 |
24 |
27 |
27 |
25 |
22 |
17 |
13 |
| Min temperature (night-time) | 5 |
5 |
7 |
11 |
14 |
18 |
21 |
21 |
20 |
15 |
11 |
7 |
| Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
L |
H |
H |
M |
0 |
0 |
0 |
| Sea temperature | 20 |
19 |
20 |
21 |
23 |
25 |
28 |
29 |
28 |
26 |
24 |
22 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Yakushima
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 10 |
11 |
12 |
13 |
14 |
14 |
14 |
13 |
12 |
11 |
11 |
10 |
| UV Index (Maximum) | 4 |
6 |
8 |
10 |
11 |
11 |
11 |
11 |
9 |
7 |
5 |
4 |
Rainfall in Yakushima
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 23 |
21 |
23 |
20 |
20 |
22 |
20 |
21 |
20 |
18 |
17 |
21 |
| Average monthly rainfall (mm) | 170 |
211 |
312 |
331 |
407 |
531 |
302 |
260 |
330 |
224 |
203 |
162 |
More about Yakushima
Yakushima by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Japan
The climate guide for Japan (Yakushima) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Yakushima?
Yakushima has a temperate climate with hot summers and some rainfall in all months.
Yakushima weather in January
Expect daytime maximum temperatures of 11°C in Yakushima, Japan in January based on long-term weather averages. There are 3 hours of sunshine per day on average with 23 days with some rainfall and typically 170 mm of rainfall in the month.
- 11°C max day temperature
11 - 3 hours of sunshine per day
- 23 days with some rainfall
23 - 5°C min night temperature
5 - 10 hours of daylight per day
10 - No heat & humidity
0 - 170 mm of monthly rainfall
170 - 4 (Moderate) UV index
4 - 20°C sea temperature
20
Yakushima weather in February
Expect daytime maximum temperatures of 11°C in Yakushima, Japan in February based on long-term weather averages. There are 3 hours of sunshine per day on average with 21 days with some rainfall and typically 211 mm of rainfall in the month.
- 11°C max day temperature
11 - 3 hours of sunshine per day
- 21 days with some rainfall
21 - 5°C min night temperature
5 - 11 hours of daylight per day
11 - No heat & humidity
0 - 211 mm of monthly rainfall
211 - 6 (High) UV index
6 - 19°C sea temperature
19
Yakushima weather in March
Expect daytime maximum temperatures of 14°C in Yakushima, Japan in March based on long-term weather averages. There are 4 hours of sunshine per day on average with 23 days with some rainfall and typically 312 mm of rainfall in the month.
- 14°C max day temperature
14 - 4 hours of sunshine per day
- 23 days with some rainfall
23 - 7°C min night temperature
7 - 12 hours of daylight per day
12 - No heat & humidity
0 - 312 mm of monthly rainfall
312 - 8 (Very High) UV index
8 - 20°C sea temperature
20
Yakushima weather in April
Expect daytime maximum temperatures of 18°C in Yakushima, Japan in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 20 days with some rainfall and typically 331 mm of rainfall in the month.
- 18°C max day temperature
18 - 5 hours of sunshine per day
- 20 days with some rainfall
20 - 11°C min night temperature
11 - 13 hours of daylight per day
13 - No heat & humidity
0 - 331 mm of monthly rainfall
331 - 10 (Very High) UV index
10 - 21°C sea temperature
21
Yakushima weather in May
Expect daytime maximum temperatures of 21°C in Yakushima, Japan in May based on long-term weather averages. There are 5 hours of sunshine per day on average with 20 days with some rainfall and typically 407 mm of rainfall in the month.
- 21°C max day temperature
21 - 5 hours of sunshine per day
- 20 days with some rainfall
20 - 14°C min night temperature
14 - 14 hours of daylight per day
14 - No heat & humidity
0 - 407 mm of monthly rainfall
407 - 11 (Extreme) UV index
11 - 23°C sea temperature
23
Yakushima weather in June
Expect daytime maximum temperatures of 24°C in Yakushima, Japan in June based on long-term weather averages. There are 4 hours of sunshine per day on average with 22 days with some rainfall and typically 531 mm of rainfall in the month.
- 24°C max day temperature
24 - 4 hours of sunshine per day
- 22 days with some rainfall
22 - 18°C min night temperature
18 - 14 hours of daylight per day
14 - Low heat & humidity
L - 531 mm of monthly rainfall
531 - 11 (Extreme) UV index
11 - 25°C sea temperature
25
Yakushima weather in July
Expect daytime maximum temperatures of 27°C in Yakushima, Japan in July and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 20 days with some rainfall and typically 302 mm of rainfall in the month.
- 27°C max day temperature
27 - 7 hours of sunshine per day
- 20 days with some rainfall
20 - 21°C min night temperature
21 - 14 hours of daylight per day
14 - High heat & humidity
H - 302 mm of monthly rainfall
302 - 11 (Extreme) UV index
11 - 28°C sea temperature
28
Yakushima weather in August
Expect daytime maximum temperatures of 27°C in Yakushima, Japan in August and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 21 days with some rainfall and typically 260 mm of rainfall in the month.
- 27°C max day temperature
27 - 7 hours of sunshine per day
- 21 days with some rainfall
21 - 21°C min night temperature
21 - 13 hours of daylight per day
13 - High heat & humidity
H - 260 mm of monthly rainfall
260 - 11 (Extreme) UV index
11 - 29°C sea temperature
29
Yakushima weather in September
Expect daytime maximum temperatures of 25°C in Yakushima, Japan in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 20 days with some rainfall and typically 330 mm of rainfall in the month.
- 25°C max day temperature
25 - 5 hours of sunshine per day
- 20 days with some rainfall
20 - 20°C min night temperature
20 - 12 hours of daylight per day
12 - Moderate heat & humidity
M - 330 mm of monthly rainfall
330 - 9 (Very High) UV index
9 - 28°C sea temperature
28
Yakushima weather in October
Expect daytime maximum temperatures of 22°C in Yakushima, Japan in October based on long-term weather averages. There are 5 hours of sunshine per day on average with 18 days with some rainfall and typically 224 mm of rainfall in the month.
- 22°C max day temperature
22 - 5 hours of sunshine per day
- 18 days with some rainfall
18 - 15°C min night temperature
15 - 11 hours of daylight per day
11 - No heat & humidity
0 - 224 mm of monthly rainfall
224 - 7 (High) UV index
7 - 26°C sea temperature
26
Yakushima weather in November
Expect daytime maximum temperatures of 17°C in Yakushima, Japan in November based on long-term weather averages. There are 4 hours of sunshine per day on average with 17 days with some rainfall and typically 203 mm of rainfall in the month.
- 17°C max day temperature
17 - 4 hours of sunshine per day
- 17 days with some rainfall
17 - 11°C min night temperature
11 - 11 hours of daylight per day
11 - No heat & humidity
0 - 203 mm of monthly rainfall
203 - 5 (Moderate) UV index
5 - 24°C sea temperature
24
Yakushima weather in December
Expect daytime maximum temperatures of 13°C in Yakushima, Japan in December based on long-term weather averages. There are 3 hours of sunshine per day on average with 21 days with some rainfall and typically 162 mm of rainfall in the month.
- 13°C max day temperature
13 - 3 hours of sunshine per day
- 21 days with some rainfall
21 - 7°C min night temperature
7 - 10 hours of daylight per day
10 - No heat & humidity
0 - 162 mm of monthly rainfall
162 - 4 (Moderate) UV index
4 - 22°C sea temperature
22
More about Yakushima
Yakushima by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Japan
- Explore latest offers on Fred Olsen Cruises in 2026/2027
- Find last minute deals or early bird discounts
- Filter offers by price, destination, ship & departure point
The climate guide for Japan (Yakushima) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Compare Yakushima weather with the UK
The weather chart below compares the average monthly maximum daytime temperature for Yakushima, Japan and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
More about Japan
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