Your holiday weather, at a glance

Japan in August: where is it warmest?

In August, Okayama is the warmest place with 31 °C by day, Hakodate the coolest with 24 °C. 12 of 33 destinations have good holiday weather.

All destinations in August, warmest first

Long-term averages for the month: daytime high, sea, sunshine and rainy days.

Place	Score	Air	Sea	Sun	Rain days
Okayama	59	31°	27°	7 h	8
Kyoto	55	31°	–	7 h	10
Nara	54	31°	–	7 h	10
Osaka	49	31°	–	7 h	12
Nagoya	48	31°	–	7 h	13
Kagoshima	40	31°	28°	7 h	18
Kobe	64	30°	27°	7 h	11
Tokyo	56	30°	26°	6 h	11
Kanazawa	56	30°	27°	7 h	13
Chiba	56	30°	26°	6 h	12
Minato	55	30°	26°	6 h	11
Kitakyūshū	52	30°	27°	6 h	13
Fukuoka	51	30°	27°	7 h	15
Kumamoto	49	30°	28°	6 h	13
Hamamatsu	43	30°	27°	7 h	17
Itsukushima	82	29°	27°	7 h	11
Naha, Okinawa	76	29°	29°	7 h	15
Okinawa	76	29°	29°	7 h	15
Hiroshima	63	29°	27°	7 h	11
Yokohama	63	29°	26°	6 h	11
Yokosuka	63	29°	26°	6 h	11
Kawasaki	59	29°	26°	6 h	11
Niigata	59	29°	27°	7 h	15
Nagasaki	58	29°	28°	7 h	14
Shizuoka	54	29°	27°	6 h	17
Nagano	50	29°	–	7 h	21
Kamakura	68	28°	26°	6 h	11
Matsumoto	59	28°	–	6 h	17
Aomori	68	27°	23°	6 h	14
Sendai	61	27°	–	5 h	15
Hakone	57	26°	–	5 h	19
Sapporo	67	25°	–	5 h	14
Hakodate	65	24°	23°	5 h	14

Japan in August: where is it warmest?

The warmest places in August are Okayama (31 °C), Kyoto (31 °C) and Nara (31 °C).

Japan in August: where is the sea warmest?

The sea is warmest at Naha, Okinawa (29 °C), Okinawa (29 °C) and Kagoshima (28 °C).

Japan in August: where is the weather best?

The best holiday weather in August – warm, sunny and dry – is in Itsukushima, Naha, Okinawa and Okinawa.

Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences