What is the national average of Typhoon approach frequency (center within 300km, yearly average)?

The simple average across all 47 prefectures is 2.80times/yr (2026), based on JMA — RSMC Tokyo best-track data.

Climate · National ranking

Typhoon approach frequency (center within 300km, yearly average)

2026Unit: times/yrlower is better

Average yearly count of typhoons whose center passed within 300km of the prefectural capital over the past 30 years. A geographic approach frequency that cannot capture within-prefecture variation.

Source: JMA — RSMC Tokyo best-track data

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In 2026, Okinawa recorded the highest Typhoon approach frequency (center within 300km, yearly average) (4.20times/yr) and Hokkaido the lowest (1.63times/yr) among Japan's 47 prefectures. The simple 47-prefecture average is 2.80times/yr. Source: JMA — RSMC Tokyo best-track data.

47OkinawaOkinawa4.20times/yr
46KagoshimaKyushu3.33times/yr
45NagasakiKyushu3.20times/yr
44MiyazakiKyushu3.17

FAQ — Typhoon approach frequency (center within 300km, yearly average)

Which prefecture has the highest Typhoon approach frequency (center within 300km, yearly average) in Japan?: As of 2026, Okinawa has the highest Typhoon approach frequency (center within 300km, yearly average) at 4.20times/yr among all 47 prefectures.
Which prefecture has the lowest Typhoon approach frequency (center within 300km, yearly average)?: Hokkaido has the lowest Typhoon approach frequency (center within 300km, yearly average) at 1.63times/yr (2026).
What is the national average of Typhoon approach frequency (center within 300km, yearly average)?: The simple average across all 47 prefectures is 2.80times/yr (2026), based on JMA — RSMC Tokyo best-track data.

▲ The top 5 prefectures are tinted sky, ▼ the bottom 5 amber — just enough colour to follow the two ends of the “desirable direction.”

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FAQ — Typhoon approach frequency (center within 300km, yearly average)

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