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Izumo Weather by Month
Average temperatures, rainfall and humidity for Izumo, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Izumo month looks like before you travel — then check the live Izumo forecast for the days ahead.
Warmest month
August
31°C average high
Coolest month
January
2°C average low
Wettest month
June
113 mm of rain
Driest month
November
60 mm of rain
Average temperature and rainfall in Izumo by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 8°C | 2°C | -5°C / 18°C | 61 mm | 74% | 17 km/h |
| February | 9°C | 2°C | -8°C / 23°C | 63 mm | 73% | 16 km/h |
| March | 13°C | 5°C | -3°C / 25°C | 81 mm | 69% | 15 km/h |
| April | 18°C | 9°C | 0°C / 27°C | 96 mm | 69% | 14 km/h |
| May | 23°C | 14°C | 4°C / 32°C | 66 mm | 69% | 13 km/h |
| June | 26°C | 19°C | 11°C / 37°C | 113 mm | 78% | 11 km/h |
| July | 30°C | 24°C | 18°C / 36°C | 78 mm | 78% | 12 km/h |
| August | 31°C | 24°C | 17°C / 38°C | 96 mm | 76% | 12 km/h |
| September | 27°C | 20°C | 11°C / 36°C | 108 mm | 78% | 12 km/h |
| October | 21°C | 14°C | 5°C / 32°C | 78 mm | 75% | 13 km/h |
| November | 16°C | 9°C | 1°C / 27°C | 60 mm | 72% | 14 km/h |
| December | 10°C | 4°C | -2°C / 23°C | 73 mm | 72% | 16 km/h |
Best time to visit Izumo
The most comfortable time to visit Izumo is generally May to June and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around June, totalling about 972 mm a year.
Travellers who prefer heat should aim for August, when highs average 31°C. June is the month to avoid if rain would spoil your plans — it averages 113 mm, roughly 2× the rainfall of the driest month (November).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Izumo forecast for what is happening now.