Climate averages 1991–2020
Seto weather
in July.
A hot, very wet month: the 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Seto: daytime highs average 28.9°C and nights cool to about 21.8°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 190 mm of rain on roughly 15 days, which makes July a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 17 min on an average July day.
The nearest other city in this atlas is Tajimi (10 km away). In July its highs average 28.6°C, about as warm as Seto, with 268 mm of rain.
Among the 303 cities listed in Japan, Seto ranks joint 81st of 303 for the warmest July highs and joint 126th of 303 for the driest July (rainfall, lowest first). The mean July high of those 303 cities is 27.9°C; Seto is 1.0°C warmer than that mean.
From July to August, average highs rise by 1.6°C to 30.5°C, and monthly rainfall falls from 190 mm to 111 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Seto climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.8°C-1.1°C | -1.1°C | 54 | 5.7 | 10.110 h |
| February | 9.0°C-0.9°C | -0.9°C | 61 | 6.6 | 10.911 h |
| March | 12.9°C2.0°C | 2.0°C | 110 | 10.1 | 11.912 h |
| April | 18.0°C7.1°C | 7.1°C | 123 | 10.6 | 13.113 h |
| May | 22.5°C12.5°C | 12.5°C | 144 | 10.6 | 14.014 h |
| June | 25.6°C17.4°C | 17.4°C | 178 | 14.3 | 14.514 h |
| July, selected | 28.9°C21.8°C | 21.8°C | 190 | 14.9 | 14.314 h |
| August | 30.5°C22.9°C | 22.9°C | 111 | 11.7 | 13.513 h |
| September | 26.9°C19.2°C | 19.2°C | 186 | 12.1 | 12.412 h |
| October | 21.4°C12.8°C | 12.8°C | 171 | 10.3 | 11.311 h |
| November | 15.7°C6.4°C | 6.4°C | 85 | 7.2 | 10.310 h |
| December | 10.2°C1.1°C | 1.1°C | 55 | 6.0 | 9.810 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Tajimi in JulyJapan · 10 kmHigh 28.6°C · Low 21.4°C · 268 mm rain
- Kasugai in JulyJapan · 12 kmHigh 29.3°C · Low 22.2°C · 190 mm rain
- Toyota in JulyJapan · 17 kmHigh 28.9°C · Low 22.0°C · 278 mm rain
- Komaki in JulyJapan · 18 kmHigh 29.0°C · Low 21.7°C · 190 mm rain
- Nagoya in JulyJapan · 19 kmHigh 29.2°C · Low 22.1°C · 190 mm rain
- Kani in JulyJapan · 19 kmHigh 28.5°C · Low 21.1°C · 271 mm rain
- Ama in JulyJapan · 28 kmHigh 29.2°C · Low 22.2°C · 276 mm rain
- Ichinomiya in JulyJapan · 28 kmHigh 29.0°C · Low 21.7°C · 276 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Seto) is explained once on the Seto year overview and on the Sources, method and limits page.
Nagoya, Kasugai and Komaki lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.