Naomi arranged the entire trip very well. Her explanations in Chinese, English, and Japanese were very clear. When we arrived at each attraction, she also carefully explained the key points so that everyone could easily grasp the information. I really enjoyed today's trip. I must give Naomi two thumbs up (one for me and one for my family 😄).
Anonymous User
Family
Omihachiman Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Omihachiman year round climate
Spring (March–May): 8.7–17.7°C on average, mild climate but with relatively high rainfall, especially in April and May. Common activities: Cherry blossom viewing, visiting Hikone Castle, exploring the water towns. Recommended clothing: Light jacket, comfortable long-sleeved clothing, rain gear.
Summer (June–August): 22.7–28.5°C on average, hot and humid with relatively high rainfall, especially in June and July. Common activities: Swimming at Lake Biwa, enjoying outdoor activities (pay attention to sun protection). Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): 18.3–13.0°C on average, pleasant and comfortable climate with reduced rainfall. Common activities: Maple leaf viewing, cycling through the old streets of Omihachiman. Recommended clothing: Comfortable long-sleeved clothing, light jacket.
Winter (December–February): 6.7–5.0°C on average, cold and dry with low rainfall. Common activities: Tasting local cuisine, experiencing onsen. Recommended clothing: Warm jacket, hat, scarf, gloves.
Omihachiman climatological average
Annual average temperature: approx. 15.7°C / Annual rainfall: approx. 1670 mm / Summer humidity: 70%–80% / Rainiest month: July
Omihachiman monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
4.1°C
90.8
February
5°C
79.7
March
8.7°C
123.8
April
14.5°C
152.2
May
17.7°C
188.3
June
22.7°C
223.6
July
27.6°C
235.1
August
28.5°C
165.1
September
26.1°C
117.4
October
18.3°C
124.5
November
13°C
96.9
December
6.7°C
72.7
Omihachiman weather for the next seven days
7/11
Saturday
Sunny
30.1°C/22.1°C
7/12
Sunday
Partly Cloudy
28.6°C/23.2°C
7/13
Monday
Partly Cloudy
30.5°C/23.4°C
7/14
Tuesday
Partly Cloudy
31.6°C/23.5°C
7/15
Wednesday
Sunny
31.9°C/23.7°C
7/16
Thursday
Patchy rain nearby
31.1°C/24.3°C
7/17
Friday
Patchy rain nearby
30.7°C/23.8°C
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