🥶On 8/11/2025, North #Japan (especially #Hokkaido) experienced a strong cold spell for this time of year, with some stations having a Tmax similar to mid-December : Tmax at #Sapporo was 🌡️1.9°C, the coldest for this time of year (until 12/11) in 34 years (1.2°C on 5/11/1991).

In #Hokkaido, under the influence of unusually 🥶strong cold spell for this time of year, some areas experienced the first significant snowfall in October in 8 to 9 years.
On 29-10-2025, ❄️9 cm of snow in Asahikawa, marking the deepest snow in October in 9 years.

🥵Latest 35°C in #Japan🇯🇵 on 12 October 2025 : 🌡️35.0°C in Kimotsuki-Maeda, 3 days later than the previous latest 35℃ (35.1°C, 9-10-2013, Itoigawa).
Monthly records at older stations
34.0°C Kagoshima [measured since 1883]
32.6 Hiroshima [1879]
28.9 Mt. Unzen [1924]
etc...

🥵🌉MONTHLY NATIONAL RECORD for OCTOBER for the HIGHEST DAILY MINIMUM TEMPERATURE in #JAPAN🇯🇵 on 4 October 2025 : the Tmin from midnight to midnight was 🌡️28.9°C in #Ishigakijima Island (#Okinawa).
Previous record : 28.6°C, 7-10-2019, Minamitorishima Island.
www.data.jma.go.jp/stats/etrn/v...

🥵As of 3 September 2025, the number of extremely hot days (🌡️>= 35°C) in #Tokyo in 2025 has risen further to 28 days, significantly exceeding the 22 days recorded during the summer of 2023 !

🥵The anomaly in #Japan's average surface temperature during summer 2025 (June to August) was 🌡️+2.36°C, significantly exceeding the previous summer record high of +1.76°C set in 2023 and 2024 since records began in 1898 !
www.data.jma.go.jp/cpdinfo/temp...
weathernews.jp/news/202509/...

🌡️From 18 August to 27 August 2025, Tmax>=35°C were observed for 10 consecutive days, setting a new record for the longest such period.
Previous longest record : 9 days from 25 June to 3 July 2022 (measurements since 1875)

23 days of extreme heat (🌡️>= 35°C) in #Tokyo this summer 2025, a record for the Japanese capital in 150 years of measurements, beating the 22 days recorded in the summers of 2023.

🥵ALL-TIME NATIONAL RECORD for HIGHEST TEMPERATURE in #JAPAN🇯🇵 broken by a WIDE MARGIN on 5 August 2025 : the Tmax reached 🌡️41.8°C on #Isesaki (#Gunma).
Previous record : 41.2°C, 30-7-2025, Kaibara.

📈The monthly anomaly of the average surface temperature over Japan in July 2025 was 🌡️+2.89°C. This significantly surpasses the previous July record of +2.16°C set in July 2024, marking the highest record since statistics began in 1898 for 3 consecutive years !!

Source : JMA & WEATHERNEWS INC.

🥵ALL-TIME NATIONAL RECORD for the HIGHEST TEMPERATURE in #JAPAN🇯🇵 on 30 July 2025 : the Tmax reached 🌡️41.2°C on #Kaibara (#Kinnki).
Previous record : 41.1°C, 23-7-2018, Kumagaya & 17-8-2020, Hamamatsu.

🥵13 hot summer days (🌡️>= 30°C) in #Tokyo in June 2025, a record for the Japanese capital in 151 years of measurements, beating the 10 days in June 1979.

🥵An unusually early heatwave has hit a large part of #Japan🇯🇵, with many monthly records being broken every day. Examples of old stations <1950 :
🌡️13.2°C Mt. Fuji🗻 20/6/2025 ->12.3, 1977&2006&2013
🌡️36.5℃ Tottori 20/6
🌡️35.2℃ Hagi 20/6
🌡️34.5℃ Miyakonojo 19/6
🌡️34.5℃ Onahama 17/6
🌡️36.2℃ Miyako 16/6
etc.

🥵On 21 May 2025, 🌡️35.0°C in Kamioka, earlier than usual, first Tx ≧ 35°C of this season in #Japan🇯🇵 !
The first Tx >= 35°C in #Japan in the season were on 12/06 in 2024, 17/05 in 2023, 29/05 in 2022 and 09/06 in 2021.
Earliest record : 13-5-1993

🥵Yesterday, 20-5-2025, a record high temperature for the month of May was broken in Okinawa, western Japan and elsewhere :
🌡️32.3℃ Naha ->32.0, 20-5-1906 !! [measured since 1891]
🌡️31.0℃ Yuya ->30.7, 9-5-2011
🌡️30.2℃ Ikawa ->30.0, 17-5-2023
etc...

❄️❄️❄️59 cm of #snow fell in #Obihiro, Hokkaido, in the "3 hours" up to 3am on 4/02/2025, significantly more than the 48 cm that fell in Otoineppu, Hokkaido, on 26/01/2013, making it the national record for 3-hour snowfall in #Japan🇯🇵 !!

❄️❄️❄️87 cm of #snow fell in #Memuro, Hokkaido, in the 6 hours up to 7am on 4/02/2025, significantly more than the 66 cm that fell in Otoineppu, Hokkaido, on 26/01/2013, making it the national record for 6-hour snowfall in #Japan🇯🇵 !!
www.jma.go.jp/jma/press/18...

❄️❄️❄️120 cm of #snow fell in #Obihiro, Hokkaido, in the 12 hours up to 9am on 4/02/2025, significantly more than the 91 cm that fell in Oguni, Yamagata Prefecture, on 24/12/2022, making it the national record for 12-hour snowfall in #Japan🇯🇵 !! via JMA
weathernews.jp/s/topics/202...