Omihachiman Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Omihachiman.
Climate overview of Omihachiman
Omihachiman, Shiga, Japan, experiences significant temperature variation throughout the year. Summers bring daytime highs of 32°C (90°F) in August, while winters cool to 8°C (46°F) in January.
The city receives considerable rain/snowfall, with around 1634 mm (64 in) annually. July is the wettest month. It has very warm summers and cold winters. The most sunshine falls in May, with an average of 6.2 hours of daily sunshine.
Omihachiman Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Omihachiman - and find the best time to visit.
Monthly Temperature in Omihachiman
Depending on the time of the year, temperatures range from very warm to chilly in Omihachiman. Typically, average maximum daytime temperatures range from a very warm 32°C (90°F) in August to a chilly 8°C (46°F) in the coolest month, January.
Nights vary from 24°C (75°F) in August to around 0°C (32°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Omihachiman
Omihachiman has a relatively rain/snowy climate with high precipitation levels, averaging 1634 mm (64 in) of rain/snowfall annually. The climate in Omihachiman shows significant variation throughout the year. Expect heavy rainfall in July, the wettest month, with an average of 212 mm (8.3 in) of precipitation over 19 rainy days.
In contrast, the driest month December offers drier and sunnier days, with around 75 mm (3 in) of rainfall over 20 rainy days. For more details, please visit our Omihachiman Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Omihachiman
Omihachiman offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between May (6.2 hours daily) and February (4.0 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Omihachiman by Month
The relative humidity is high throughout the year in Omihachiman.
The city experiences its highest humidity in July, reaching 70%. In April, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Omihachiman
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and October
- Warmest weather: July and August
- Most sunshine: April, May and August
- Seasonal pattern: Very warm summers and cold winters
Frequently asked questions about the climate in Omihachiman
What is the best time to visit Omihachiman?
May and October typically offer the most optimal weather in Omihachiman. In contrast, January, February, March and July tend to have less optimal conditions. Omihachiman has very warm summers and cold winters.
What temperatures can I expect in Omihachiman?
Daytime highs range from 8°C (46°F) in January to 32°C (90°F) in August. Nighttime lows range from 0°C (32°F) to 24°C (75°F). Temperatures vary considerably through the year.
How much rain does Omihachiman get?
Annual rainfall is around 1634 mm (64 in). July is the wettest month with 212 mm (8.3 in), while December is the driest with 75 mm (3 in).
How sunny is Omihachiman?
Omihachiman receives around 1,805 hours of sunshine per year. May is the sunniest month with 185 hours, while February is the cloudiest with just 120 hours.
Omihachiman 3-Day Forecast
Omihachiman on the map
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