Temperature records for Miyagi
―
Miyagi, ―
Stations in Miyagi
All-time records in Miyagi
Records among the stations on this page (statistics as of November 1, 2026).
| Record | Station | Value | Date |
|---|---|---|---|
| Highest temperature | Shizugawa | 38.0°C | Aug 14, 1994 |
| Lowest temperature | Yoneyama | -19.5°C | Dec 30, 1976 |
| Heaviest daily rainfall | Shiroishi | 342.0 mm | Oct 12, 2019 |
Range of records by station
Each bar is one station: the left dot is its record low and the right dot its record high. The statistical period differs by station, depending on when observations began or the station moved. The dates are on each station's page.
The climate of Miyagi
Trace Miyagi Prefecture's records and September keeps coming up. The record high among the stations covered here is 37.4°C at Sendai, dated September 2, 2025. The daily rainfall record is also at Sendai, 312.7 mm, set on September 16, 1948. Ishinomaki's daily rainfall record of 227 mm likewise falls on September 21, 2011. In the season when autumn rain arrives while summer warmth lingers, the top values among the stations covered here for heat and heavy rain have lined up together.
Winter records, by contrast, were set in long-ago years. The record low among the stations covered here is -14.6°C at Ishinomaki on January 6, 1919, and Sendai also observed -11.7°C on January 26, 1945. The normal picture, however, is much milder: on the 30-year average for 1996–2025, the January minimum is -1.3°C in Sendai and -2.2°C in Ishinomaki. On the inner side of the Ou Mountains, which catch the snow clouds of the Sea of Japan side, plains that open gently toward the sea create this calm winter.
Sendai and Ishinomaki are close to each other, and their climates read much alike. The average August maximum is 28.8°C in Sendai and 27.5°C in Ishinomaki, a difference of 1.3°C, and the difference in the January minimum is only 0.9°C. The annual share of days with less than 1 mm of precipitation is also close, 74.6% in Ishinomaki and 73.1% in Sendai; both rise in January, to 85.2% and 82.8% respectively, and drop in July to 62.5% and 58.2%. The 2 cities follow the same calendar side by side: dry, sunny winters and cloudy midsummers.
Record values in this description are based on data collected as of September 2026, and the normal statistics on the 30 years 1996–2025.
Monthly normals for Miyagi (Sendai)
The normals for Sendai represent the stations in Miyagi. Normals for the other stations are on each station's page.
Temperature (monthly normals)
The lines show monthly normals: the upper line is the monthly mean of the daily high and the lower line the monthly mean of the daily low, and the middle line is the monthly mean temperature. Touch the point for a month to read its values. Normals are the 1991–2020 average.
Precipitation (monthly normals, mm)
Table of monthly normals
| Month | Mean | High | Low | Precipitation |
|---|---|---|---|---|
| Jan | 2.0 | 5.6 | -1.3 | 42.3 |
| Feb | 2.4 | 6.5 | -1.1 | 33.9 |
| Mar | 5.5 | 10.0 | 1.4 | 74.4 |
| Apr | 10.7 | 15.5 | 6.3 | 90.2 |
| May | 15.6 | 20.2 | 11.7 | 110.2 |
| Jun | 19.2 | 23.1 | 16.1 | 143.7 |
| Jul | 22.9 | 26.6 | 20.2 | 178.4 |
| Aug | 24.4 | 28.2 | 21.6 | 157.8 |
| Sep | 21.2 | 25.0 | 18.0 | 192.6 |
| Oct | 15.7 | 19.8 | 11.9 | 150.6 |
| Nov | 9.8 | 14.1 | 5.6 | 58.7 |
| Dec | 4.5 | 8.3 | 0.9 | 44.1 |
Temperatures are in degrees Celsius (°C) and precipitation in mm. Blank cells have no normal.
Annual mean temperature (1996–2025)
The yearly average of the daily mean temperature (the line is broken in years with many missing values). Observing conditions at Sendai changed on December 4, 2007; June 25, 2008 (for example, a relocation or new instruments), so the statistics may not be continuous across those dates.
The normals listed here are averages over the 30 years from 1991 to 2020. They are fixed values that stay the same until the next revision of the normals, and they show how warm or cold that month usually is in that area.