| * | Normal statistics are 1991-2020 averages. |
| ** | Blanks in the tables indicate an absence of tropical cyclones for the month in question during the period 1991-2020. |
| *** | The annual number of tropical cyclones approaching Japan does not always match the sum of monthly numbers because some approaches span two consecutive months.
|
Table 1 Numbers of tropical cyclones with maximum wind speeds of 17.2 m/s or higher forming over the western North Pacific, those approaching Japan, and those making landfall in Japan
|
Jan. |
Feb. |
Mar. |
Apr. |
May |
Jun. |
Jul. |
Aug. |
Sep. |
Oct. |
Nov. |
Dec. |
Annual |
| Formation |
0.3 |
0.3 |
0.3 |
0.6 |
1.0 |
1.7 |
3.7 |
5.7 |
5.0 |
3.4 |
2.2 |
1.0 |
25.1 |
| Approach |
|
|
|
0.2 |
0.7 |
0.8 |
2.1 |
3.3 |
3.3 |
1.7 |
0.5 |
0.1 |
11.7 |
| Landfall |
|
|
|
|
0.0 |
0.2 |
0.6 |
0.9 |
1.0 |
0.3 |
|
|
3.0 |
Table 2 Numbers of tropical cyclones with maximum wind speeds of 17.2 m/s or higher approaching the mainland of Japan and Okinawa/Amami
|
Jan. |
Feb. |
Mar. |
Apr. |
May |
Jun. |
Jul. |
Aug. |
Sep. |
Oct. |
Nov. |
Dec. |
Annual |
| Mainland of Japan |
|
|
|
0.0 |
0.2 |
0.4 |
1.0 |
1.6 |
1.9 |
0.9 |
|
|
5.8 |
| Okinawa/Amami |
|
|
|
0.0 |
0.4 |
0.6 |
1.5 |
2.3 |
2.0 |
1.1 |
0.3 |
0.0 |
7.9 |
Table 3 Numbers of tropical cyclones with maximum wind speeds of 17.2 m/s or higher approaching each district of Japan
|
Jan. |
Feb. |
Mar. |
Apr. |
May |
Jun. |
Jul. |
Aug. |
Sep. |
Oct. |
Nov. |
Dec. |
Annual |
| Okinawa |
|
|
|
0.0 |
0.4 |
0.6 |
1.5 |
2.2 |
1.9 |
1.1 |
0.3 |
0.0 |
7.7 |
| Kyushu (South) and Amami |
Amami |
|
|
|
0.0 |
0.2 |
0.4 |
0.7 |
1.1 |
1.3 |
0.7 |
|
|
4.3 |
| Kyushu (South) |
|
|
|
0.0 |
0.1 |
0.4 |
0.7 |
1.0 |
1.2 |
0.5 |
|
|
3.9 |
| Kyushu (North) |
|
|
|
0.0 |
0.1 |
0.3 |
0.8 |
1.1 |
1.1 |
0.4 |
|
|
3.8 |
| Shikoku |
|
|
|
|
0.1 |
0.3 |
0.7 |
0.9 |
1.0 |
0.4 |
|
|
3.3 |
| Chugoku |
|
|
|
|
0.1 |
0.2 |
0.6 |
0.8 |
1.1 |
0.3 |
|
|
3.0 |
| Kinki |
|
|
|
|
0.1 |
0.3 |
0.6 |
0.7 |
1.1 |
0.7 |
|
|
3.4 |
| Tokai |
|
|
|
|
0.1 |
0.2 |
0.6 |
0.8 |
1.2 |
0.7 |
|
|
3.5 |
| Hokuriku |
|
|
|
|
|
0.2 |
0.5 |
0.7 |
1.0 |
0.4 |
|
|
2.8 |
| Kanto/Koshin |
Kanto and Koshin |
|
|
|
|
0.0 |
0.2 |
0.4 |
0.8 |
1.2 |
0.7 |
|
|
3.3 |
| Izu Islands and Ogasawara Islands |
|
|
|
0.1 |
0.4 |
0.4 |
0.7 |
1.0 |
1.5 |
1.3 |
0.3 |
0.0 |
5.4 |
| Tohoku |
|
|
|
|
0.0 |
0.2 |
0.3 |
0.8 |
0.9 |
0.5 |
|
|
2.7 |
| Hokkaido |
|
|
|
|
|
0.1 |
0.2 |
0.7 |
0.7 |
0.2 |
|
|
1.9 |
|
