# List of extreme temperatures in Japan

Since the establishment of the first weather station in Hakodate in 1872, Japan has recorded temperature changes across the country. According to the data provided by Japan Meteorological Agency, the maximum recorded temperature in Japan was 41.1°C in Hamamatsu on August 17, 2020, and Kumagaya on July, 23, 2018, while the minimum recorded temperature was −41.0 °C (−41.8 °F) in Asahikawa on January 25, 1902. Below is a list of the most extreme temperatures recorded in Japan.
In the whole of Japan, the place with the lowest annual average temperature is not Hokkaido, but Mount Fuji at the junction of Shizuoka and Yamanashi prefecture. The annual average temperature is −5.9 °C (21.4 °F), which is the average annual temperature of all weather stations in Japan so far. The only area with a negative value, Mount Fuji's extreme maximum temperature was only 17.8 °C (64.0 °F), which was measured on August 13, 1942.
In contrast, Minami-Tori-shima has the highest annual average temperature in Japan. This is a small island in the Pacific Ocean, some 1850 km from Honshu. It has an annual average temperature of 25.8 °C (78.4 °F), exceeding the value recorded by all weather stations including Okinawa Prefecture. And the extreme minimum temperature in the region is 13.8 °C (56.8 °F), which is unique in the whole of Japan, because even in Okinawa Prefecture, the minimum temperature of the year tends to be lower than 10 °C (50 °F).
Climate data for Japan, extremes 1872−present :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 29.7 (85.5) | 29.1 (84.4) | 30.4 (86.7) | 33.7 (92.7) | 39.5 (103.1) | 39.8 (103.6) | 41.1 (106.0) | 41.1 (106.0) | 40.4 (104.7) | 36.0 (96.8) | 34.2 (93.6) | 31.6 (88.9) | 41.1 (106.0) |
| Record low °C (°F) | −41.0 (−41.8) | −38.3 (−36.9) | −35.2 (−31.4) | −27.8 (−18.0) | −18.9 (−2.0) | −13.1 (8.4) | −6.9 (19.6) | −4.3 (24.3) | −10.8 (12.6) | −19.5 (−3.1) | −28.1 (−18.6) | −34.2 (−29.6) | −41.0 (−41.8) |
| Source: Japan Meteorological Agency ||||||||||||||

## Maximum temperatures

Japan maximum temperature extremes, by month :
| Month | Highest maximum temperatures | Highest maximum temperatures | Highest maximum temperatures | Lowest maximum temperatures | Lowest maximum temperatures | Lowest maximum temperatures |
| Month | °C | °F | Location and date | °C | °F | Location and date |
| January | 29.7 | 85.5 | Minami-Tori-shima (9 Jan 2021) | −32.0 | −25.6 | Mount Fuji (31 Jan 1936) |
| February | 29.1 | 84.4 | Ishigaki, Okinawa (16 Feb 1898) | −30.2 | −22.4 | Mount Fuji (17 Feb 1977) |
| March | 30.4 | 86.7 | Naze, Amami, Kagoshima (26 Mar 1999) | −30.1 | −22.2 | Mount Fuji (5 Mar 1977) |
| April | 33.7 | 92.7 | Yonago (28 Apr 2005) | −21.2 | −6.2 | Mount Fuji (12 Apr 1996) |
| May | 39.5 | 103.1 | Saroma, Hokkaido (26 May 2019) | −13.4 | 7.9 | Mount Fuji (6 May 1945) |
| June | 40.2 | 104.4 | Isesaki (25 Jun 2022) | −6.6 | 20.1 | Mount Fuji (2 Jun 1981) |
| July | 41.1 | 106.0 | Kumagaya (23 Jul 2018) | −1.2 | 29.8 | Mount Fuji (8 Jul 1945) |
| August | 41.1 | 106.0 | Hamamatsu (17 Aug 2020) | 0.6 | 33.1 | Mount Fuji (25 Aug 1972) |
| September | 40.4 | 104.7 | Sanjō, Niigata (3 Sep 2020) | −6.2 | 20.8 | Mount Fuji (24 Sep 1976) |
| October | 36.0 | 96.8 | Sanjō, Niigata (6 Oct 2018) | −13.7 | 7.3 | Mount Fuji (24 Oct 1947) |
| November | 34.2 | 93.6 | Minami-Tori-shima (4 Nov 1953) | −24.8 | −12.6 | Mount Fuji (30 Nov 1970) |
| December | 31.6 | 88.9 | Minami-Tori-shima (5 Dec 1952) | −28.7 | −19.7 | Mount Fuji (26 Dec 1995) |

## Minimum temperatures

Japan minimum temperature extremes, by month :
| Month | Highest minimum temperatures | Highest minimum temperatures | Highest minimum temperatures | Lowest minimum temperatures | Lowest minimum temperatures | Lowest minimum temperatures |
| Month | °C | °F | Location and date | °C | °F | Location and date |
| January | 26.0 | 78.8 | Minami-Tori-shima (9 Jan 2021) | −41.0 | −41.8 | Asahikawa (25 Jan 1902) |
| February | 24.5 | 76.1 | Iriomote Island (11 Feb 2010) Ishigaki, Okinawa (11 Feb 2010) | −38.3 | −36.9 | Asahikawa (11 Feb 1902) |
| March | 25.2 | 77.4 | Minami-Tori-shima (22 Mar 1999) | −35.2 | −31.4 | Obihiro (3 Mar 1895) |
| April | 26.9 | 80.4 | Ishigaki, Okinawa (30 Apr 2019) | −27.8 | −18.0 | Mount Fuji (3 Apr 1965) |
| May | 28.7 | 83.7 | Tarama, Okinawa (29 May 2016) | −18.9 | −2.0 | Mount Fuji (3 May 1934) |
| June | 29.7 | 85.5 | Ishigaki, Okinawa (30 Jun 2015) | −13.1 | 8.4 | Mount Fuji (2 Jun 1981) |
| July | 30.3 | 86.5 | Komatsu, Ishikawa (31 Jul 2000) | −6.9 | 19.6 | Mount Fuji (4 Jul 1966) |
| August | 31.3 | 88.3 | Itoigawa (15 Aug 2019) | −4.3 | 24.3 | Mount Fuji (25 Aug 1972) |
| September | 29.8 | 85.6 | Koshino, Fukui (3 Sep 2020) | −10.8 | 12.6 | Mount Fuji (23 Sep 1976) |
| October | 28.6 | 83.5 | Minami-Tori-shima (7 Oct 2019) | −19.5 | −3.1 | Mount Fuji (30 Oct 1984) |
| November | 27.6 | 81.7 | Minami-Tori-shima (6 Nov 2020) | −28.1 | −18.6 | Mount Fuji (30 Nov 1970) |
| December | 26.3 | 79.3 | Minami-Tori-shima (4 Dec 1998) | −34.2 | −29.6 | Obihiro (30 Dec 1907) |