Climate Insights for Izumo

The climate in Izumo is temperate. The average annual temperature is 16°C and approximately 1875mm of precipitation falls per year. Izumo receives a notable amount of rainfall throughout the year, including during its driest month. Izumo is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, January, December, when temperatures can drop to 6°C. Snowfall occurs from January to December, with around 58cm accumulating over the season.

Temperatures in Izumo vary considerably across the year, with a 22°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 28°C and the mean temperature sits around 27°C. February is the coolest month, with minimum temperatures around 6°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between November and December, with a 5°C shift in average temperatures.

Izumo is a fairly wet location, receiving approximately 1875mm of precipitation annually, which averages out to around 156mm per month. The wettest month is September, averaging 261mm of rainfall. July and June also tend to see above-average precipitation. The driest month is November, with just 69mm. That's 192mm less than September, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 58cm accumulating over the season. January typically sees the most snow at around 26cm.

Izumo is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 7km/h in winter, 6km/h in spring, 5km/h in summer, 6km/h in autumn.

It is currently summer in Izumo, which began on June 21, 2026. Izumo is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 28°C, while the coldest stretch bottoms out in February near 6°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Izumo is during May, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 92mm per month. By contrast, August can be uncomfortably hot with highs reaching 28°C, while February is the coldest period with lows dropping to 6°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Izumo based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.