Climate averages 1991–2020
Seto weather
in May.
A warm, wet month: the 5th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Seto: daytime highs average 22.5°C and nights cool to about 12.5°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 144 mm of rain on roughly 11 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 00 min on an average May day.
The nearest other city in this atlas is Tajimi (10 km away). In May its highs average 22.2°C, about as warm as Seto, with 178 mm of rain.
Among the 303 cities listed in Japan, Seto ranks joint 68th of 303 for the warmest May highs and joint 155th of 303 for the driest May (rainfall, lowest first). The mean May high of those 303 cities is 21.3°C; Seto is 1.1°C warmer than that mean.
From May to June, average highs rise by 3.1°C to 25.6°C, and monthly rainfall rises from 144 mm to 178 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Tajimi in MayJapan · 10 kmHigh 22.2°C · Low 12.0°C · 178 mm rain
- Kasugai in MayJapan · 12 kmHigh 22.9°C · Low 12.7°C · 144 mm rain
- Toyota in MayJapan · 17 kmHigh 22.6°C · Low 12.6°C · 172 mm rain
- Komaki in MayJapan · 18 kmHigh 22.5°C · Low 12.2°C · 144 mm rain
- Nagoya in MayJapan · 19 kmHigh 22.7°C · Low 12.7°C · 144 mm rain
- Kani in MayJapan · 19 kmHigh 22.1°C · Low 11.6°C · 177 mm rain
- Ama in MayJapan · 28 kmHigh 22.6°C · Low 12.8°C · 176 mm rain
- Ichinomiya in MayJapan · 28 kmHigh 22.4°C · Low 12.3°C · 176 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.