Climate averages 1991–2020
Izumo weather
in April.
A mild, wet month: the 7th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Izumo: daytime highs average 16.0°C and nights cool to about 9.7°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 104 mm of rain on roughly 11 days, which makes April a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 04 min on an average April day.
The nearest other city in this atlas is Matsue (29 km away). In April its highs average 15.4°C, 0.6°C cooler than Izumo, with 108 mm of rain.
Among the 303 cities listed in Japan, Izumo ranks joint 235th of 303 for the warmest April highs and joint 35th of 303 for the driest April (rainfall, lowest first). The mean April high of those 303 cities is 16.7°C; Izumo is 0.7°C cooler than that mean.
From April to May, average highs rise by 4.3°C to 20.3°C, and monthly rainfall rises from 104 mm to 117 mm.
The annual picture
April 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, selected | 16.0°C9.7°C | 9.7°C | 104 | 10.7 | 13.113 h |
| May | 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
April in nearby cities
- Matsue in AprilJapan · 29 kmHigh 15.4°C · Low 10.4°C · 108 mm rain
- Yonago in AprilJapan · 52 kmHigh 16.2°C · Low 9.1°C · 110 mm rain
- Higashihiroshima in AprilJapan · 107 kmHigh 17.3°C · Low 8.1°C · 117 mm rain
- Mihara in AprilJapan · 111 kmHigh 18.4°C · Low 8.9°C · 110 mm rain
- Hiroshima in AprilJapan · 111 kmHigh 18.3°C · Low 8.7°C · 124 mm rain
- Fukuyama in AprilJapan · 112 kmHigh 18.5°C · Low 9.2°C · 107 mm rain
- Onomichi in AprilJapan · 113 kmHigh 17.9°C · Low 8.9°C · 107 mm rain
- Tsuyama in AprilJapan · 117 kmHigh 18.3°C · Low 7.6°C · 120 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.