Annual mean 20°C · wettest around June · prevailing wind NE
Warmest
30.0 °C
Coldest
12.4 °C
Wettest
45%
Windiest
6.4 m/s
Prevailing
NE
5.0 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Yakushima over the whole year is 20°C. August is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 10°C. The rainy (wet) season in Yakushima runs from May to June, peaking in June with a 40% chance of rain on a given day. The dry season is October to April; October is the driest month, at 20%. Winds in Yakushima are highest in February, averaging 5.5 m/s (20 km/h), and lightest in June, at 3.6 m/s (13 km/h). The prevailing wind is from the NE. The clearest skies in Yakushima come in August, when the sky is typically 46% covered; November is the cloudiest month, at 73%.
Month by month Yakushima climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
13°C
10°C
8°C
23%
68%
5.4 m/s
12
0
56
February
13°C
11°C
9°C
26%
69%
5.5 m/s
15
0
55
March
17°C
13°C
13°C
27%
63%
4.9 m/s
38
1
71
April
20°C
16°C
17°C
28%
49%
4.8 m/s
68
5
73
May
23°C
20°C
22°C
32%
67%
4.2 m/s
77
24
50
June
25°C
23°C
27°C
40%
53%
3.6 m/s
49
53
16
July
29°C
26°C
32°C
29%
57%
3.7 m/s
9
47
1
August
30°C
26°C
33°C
25%
46%
3.9 m/s
5
39
1
September
28°C
25°C
30°C
30%
68%
4.0 m/s
20
62
5
October
24°C
21°C
24°C
20%
66%
4.4 m/s
68
38
42
November
20°C
17°C
18°C
20%
73%
4.3 m/s
69
9
72
December
15°C
12°C
10°C
20%
70%
5.4 m/s
24
1
62
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Yakushima weather by season
Year round, Yakushima has days of about 13°C at their warmest in January, its coolest month, and 30°C in August, its warmest; the coolest hours of the day run from 10°C to 26°C through the year, and the average temperature over the year is 20°C around the clock. Rain is most likely around June and least likely around October. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Yakushima weather in winterDecember to February
High 14°CLow 11°CRain 23%
Winter in Yakushima has typical daily highs of about 14°C and lows of about 11°C, with a 23% chance of rain on a given day.
Yakushima weather in springMarch to May
High 20°CLow 16°CRain 29%
Spring in Yakushima has typical daily highs of about 20°C and lows of about 16°C, with a 29% chance of rain on a given day.
Yakushima weather in summerJune to August
High 28°CLow 25°CRain 31%
Summer in Yakushima has typical daily highs of about 28°C and lows of about 25°C, with a 31% chance of rain on a given day.
Yakushima weather in autumnSeptember to November
High 24°CLow 21°CRain 23%
Autumn in Yakushima has typical daily highs of about 24°C and lows of about 21°C, with a 23% chance of rain on a given day.
When is the rainy season in Yakushima?
The rainy (wet) season in Yakushima runs from May to June, peaking in June with a 40% chance of rain on a given day. The dry season is October to April; October is the driest month, at 20%.
What time of year is Yakushima windiest?
Winds in Yakushima are highest in February, averaging 5.5 m/s (20 km/h), and lightest in June, at 3.6 m/s (13 km/h). The prevailing wind is from the NE.
What is the average temperature in Yakushima year round?
The average temperature in Yakushima over the whole year is 20°C. August is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 10°C.