The tables below give monthly averages for rainfall during August at cities and towns in Japan. Each place has a total for how many days of wet weather it usually gets this month and for the normal amount of precipitation.
The calculation of days only includes the days when precipitation totalled at least one millimetre (0.04 inches). The month's rainfall statistics are long-term historical averages of weather data collected from 1981 to 2010.
You can jump to a separate table for each section of the country: Hokkaidō, Tōhoku, Kantō, Chūbu, Kansai, Chūgoku Shikoku, Kyūshū and Okinawa.
Hokkaidō
Average monthly precipitation in August
| Days |
Place |
Inches |
Millimetres |
| 9 |
Abashiri |
4.0 |
101 |
| 10 |
Asahikawa |
5.3 |
134 |
| 9 |
Hakodate |
6.1 |
154 |
| 9 |
Obihiro |
5.5 |
139 |
| 9 |
Sapporo |
4.9 |
124 |
| 11 |
Tomakomai |
8.1 |
205 |
| 9 |
Wakkanai |
4.6 |
116 |
Tōhoku
August averages for total rainfall
| Days |
Place |
Inches |
Millimetres |
| 10 |
Aomori |
4.8 |
123 |
| 10 |
Fukushima |
6.1 |
154 |
| 8 |
Iwaki |
5.3 |
136 |
| 11 |
Morioka |
7.2 |
184 |
| 11 |
Sendai |
6.6 |
167 |
Kantō
Average amount of rain in August
| Days |
Place |
Inches |
Millimetres |
| 7 |
Chiba |
5.3 |
134 |
| 11 |
Hachijo-jima Island |
7.1 |
179 |
| 12 |
Maebashi |
8.0 |
202 |
| 15 |
Nikko |
15.5 |
394 |
| 8 |
Tokyo |
6.6 |
168 |
| 11 |
Utsunomiya |
8.3 |
210 |
| 8 |
Yokohama |
6.5 |
165 |
Chūbu
Precipitation totals for August
| Days |
Place |
Inches |
Millimetres |
| 8 |
Aikawa, Sado Island |
4.9 |
125 |
| 9 |
Gifu |
5.9 |
149 |
| 8 |
Hamamatsu |
5.9 |
151 |
| 9 |
Kanazawa |
5.5 |
139 |
| 9 |
Nagano |
3.9 |
98 |
| 8 |
Nagoya |
5.0 |
126 |
| 9 |
Niigata |
5.5 |
141 |
| 10 |
Shizuoka |
9.9 |
251 |
Kansai
August rainfall averages
| Days |
Place |
Inches |
Millimetres |
| 7 |
Himeji |
3.8 |
96 |
| 6 |
Kobe |
3.6 |
91 |
| 8 |
Kyoto |
5.2 |
132 |
| 8 |
Nara |
4.4 |
112 |
| 7 |
Osaka |
3.6 |
91 |
| 9 |
Tsu |
5.4 |
137 |
| 6 |
Wakayama |
3.4 |
86 |
Chūgoku
Total rainfall in August
| Days |
Place |
Inches |
Millimetres |
| 6 |
Fukuyama |
3.3 |
83 |
| 7 |
Hiroshima |
4.4 |
111 |
| 6 |
Kure |
3.8 |
97 |
| 9 |
Matsue |
4.5 |
114 |
| 6 |
Okayama |
3.4 |
87 |
| 9 |
Tottori |
4.6 |
117 |
| 9 |
Yamaguchi |
6.8 |
172 |
Shikoku
Average August rainfall
| Days |
Place |
Inches |
Millimetres |
| 11 |
Kochi |
11.1 |
283 |
| 7 |
Matsuyama |
3.5 |
90 |
| 7 |
Takamatsu |
3.4 |
86 |
| 8 |
Tokushima |
6.8 |
173 |
Kyūshū
Total precipitation during August
| Days |
Place |
Inches |
Millimetres |
| 9 |
Fukuoka |
6.8 |
172 |
| 11 |
Kagoshima |
8.8 |
223 |
| 10 |
Kumamoto |
6.8 |
174 |
| 13 |
Miyazaki |
11.4 |
290 |
| 9 |
Nagasaki |
7.7 |
195 |
| 9 |
Oita |
6.8 |
172 |
| 9 |
Wadomari, Okinoerabu Island |
7.1 |
179 |
| 13 |
Yakushima Island Airport |
10.6 |
269 |
Okinawa
Amount of rain in August
| Days |
Place |
Inches |
Millimetres |
| 12 |
Iriomote Island |
10.8 |
274 |
| 12 |
Ishigaki Island |
10.3 |
262 |
| 10 |
Kume |
7.2 |
182 |
| 11 |
Miyakojima |
10.3 |
263 |
| 13 |
Nago |
9.8 |
248 |
| 12 |
Naha |
9.5 |
241 |
| 10 |
Yonaguni Island |
8.4 |
213 |