Temperature Observation in the City

The Institute of Environmental Science conducts temperature observations at several elementary schools in the city to understand the heat situation in the city, which has become hot due to global warming and the heat island phenomenon.
This page introduces the tendency of heat in the city known in previous surveys. .

For detailed observation results and past observation results, see the Temperature Observation Results page.

What is the Heat Island phenomenon?　／　Heat Island countermeasures　／　Temperature Observation in the City　／　 Heat Environment Survey　／　 Future forecast of city temperature

As a result of a survey conducted by the Institute of Environmental Science, it has been found that there are regional differences in the heat conditions in the city, and that areas that tend to be hot during the day and at night are different.

• The average temperature is hot in the eastern part of the city, and in the western part of the city, it is less hot than in the eastern part of the city.
• Midsummer days tend to be more common in the northeastern part of the city and in part of the western part of the city. In particular, in 2023, except for a part of the southern part of the city, it increased throughout the city.
• The number of hot summer days tends to be higher in the northern and northeastern parts of the city, among areas where the number of midsummer days was observed.
• Tropical nights tend to be more common in the eastern part of the city.

These trends are generally consistent every year.

In addition, the guide for creating an environment that overcomes the heat using the urban environmental climate map introduces that winds blowing from the sea have the effect of suppressing the rise in temperature during the day, and green spaces have the effect of reducing nighttime temperatures. I am.
Depending on conditions such as the arrival time of the wind and the existence of green spaces, the areas that tend to be hot during the day and at night in the same city are different.

Detailed temperature observation results are posted on the Temperature Observation Results page.
The results of past observations are also posted on this page.