Lake Biwa is beautiful, but the round-trip cable car ticket to the observation deck costs ¥5000 😱 It was surprisingly cold on the mountain even in summer, and very windy… Since the round trip from Osaka took almost 6 hours, it was a bit of a shame that we didn't have enough time for each attraction. Our guide, Effy, was very dedicated, explaining the sights in Chinese, English, and Japanese!
Excellent pick-up and drop-off service, highly recommended, will subscribe again next time.
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
8/25
Tuesday
Sunny
32.1°C/25.6°C
8/26
Wednesday
Overcast
32.3°C/25.4°C
8/27
Thursday
Light rain shower
28.4°C/21.9°C
8/28
Friday
Light rain shower
26.3°C/22.8°C
8/29
Saturday
Light rain shower
26.4°C/23.8°C
8/30
Sunday
Patchy rain nearby
28.7°C/23.7°C
8/31
Monday
Patchy rain nearby
27.8°C/24.4°C
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