Climate averages 1991–2020
Izumo weather
in May.
A mild, 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 mild month in Izumo: daytime highs average 20.3°C and nights cool to about 14.3°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 117 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 Matsue (29 km away). In May its highs average 19.5°C, 0.8°C cooler than Izumo, with 120 mm of rain.
Among the 303 cities listed in Japan, Izumo ranks joint 245th of 303 for the warmest May highs and 39th of 303 for the driest May (rainfall, lowest first). The mean May high of those 303 cities is 21.3°C; Izumo is 1.1°C cooler than that mean.
From May to June, average highs rise by 3.4°C to 23.7°C, and monthly rainfall rises from 117 mm to 160 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
Izumo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.5°C3.5°C | 3.5°C | 96 | 17.3 | 10.110 h |
| February | 8.2°C3.4°C | 3.4°C | 89 | 14.7 | 10.911 h |
| March | 11.3°C5.6°C | 5.6°C | 116 | 14.1 | 11.912 h |
| April | 16.0°C9.7°C | 9.7°C | 104 | 10.7 | 13.113 h |
| May, selected | 20.3°C14.3°C | 14.3°C | 117 | 10.5 | 14.014 h |
| June | 23.7°C18.7°C | 18.7°C | 160 | 12.7 | 14.515 h |
| July | 27.2°C23.2°C | 23.2°C | 213 | 15.2 | 14.314 h |
| August | 28.7°C24.6°C | 24.6°C | 149 | 13.8 | 13.513 h |
| September | 25.0°C20.9°C | 20.9°C | 190 | 13.6 | 12.412 h |
| October | 20.2°C15.8°C | 15.8°C | 103 | 10.3 | 11.311 h |
| November | 15.3°C10.7°C | 10.7°C | 87 | 11.1 | 10.310 h |
| December | 10.2°C6.0°C | 6.0°C | 103 | 16.3 | 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
- Matsue in MayJapan · 29 kmHigh 19.5°C · Low 14.8°C · 120 mm rain
- Yonago in MayJapan · 52 kmHigh 20.5°C · Low 13.8°C · 121 mm rain
- Higashihiroshima in MayJapan · 107 kmHigh 21.7°C · Low 13.0°C · 134 mm rain
- Mihara in MayJapan · 111 kmHigh 22.9°C · Low 13.9°C · 129 mm rain
- Hiroshima in MayJapan · 111 kmHigh 22.8°C · Low 13.8°C · 143 mm rain
- Fukuyama in MayJapan · 112 kmHigh 22.9°C · Low 14.0°C · 124 mm rain
- Onomichi in MayJapan · 113 kmHigh 22.4°C · Low 13.8°C · 124 mm rain
- Tsuyama in MayJapan · 117 kmHigh 22.9°C · Low 12.8°C · 144 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 Izumo) is explained once on the Izumo year overview and on the Sources, method and limits page.