Temperature Observation Results

The Institute of Environmental Science conducts temperature observations at several elementary schools in the city every year to understand the heat situation in the city, which has become hot due to global warming and the heat island phenomenon.
This page contains the results of temperature observations in 2024 and past observations.
For information on measures against heat in cities by the Institute of Environmental Science, see the City Heat Measures page.

-The average temperature from July to August at all observation points is the highest ever.

The number of hot days at all the observed points (36 points) was the highest since the start of observations at the Institute of Environmental Science, the average temperature from July to August was also record highs, and the number of tropical nights was 32 points. It became severe heat throughout the city, including the highest number.

(Note)

• Hot day: Days when the maximum daily temperature is 35°C or higher
• Tropical night: Nights with a minimum temperature of 25°C or more from evening to the following day in Japan and North Korea

• Recorded the highest number of hot days since the start of observation (2004)
• We observe many hot days from the north to the central part, and the number of hot days in the southern part tends to decrease.
• The maximum number of hot days observed at each point was 33 days (Ikumugi, Tsurumi-ku, Tsuzuki-ku), the minimum number was 5 days (Kashio-cho, Totsuka-ku).

• Recorded more than 9 consecutive days of intense heat days at 21 locations, the largest number was 14 consecutive days (Tsuzuki-ku-ku-no-zaka).
• (In 2023, 7 consecutive days were the highest (Tsurumi-ku, Ikumugi, Tsuzuki-ku))

• High temperature in the northeastern part of the city, and in the western part of the city, it is less likely to be higher than in the eastern part of the city.
• The highest average temperature at each point is 29.8 ° C (Nishimachi, Tsurumi-ku, Isogo-ku), and the lowest is 28.4 ° C (Shinji-cho, Midori-ku).
• Compared to the past 10 years from 2014 to 2023, it was the highest at all points.
• It was 1.5 to 2.4°C higher than the average for the past 10 years from 2014 to 2023 at each point.

The average temperature at all locations was 29.2°C, a record high since the start of observations at the Institute for Environmental Science.

• Tropical nights tend to occur in the eastern part of the city
• The maximum number of tropical nights observed at each point was 57 days (Ikumugi, Tsurumi-ku, Shinyoshida-Higashi and Kikuna, Kohoku-ku), and the minimum number was 29 days (Shinji-cho, Midori-ku).

This is a list of temperature observation results for the past 10 years from 2014 to 2023 and 2024.