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Muroran
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Muroran Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
Muroran year round climate
- Spring (March–May): Average 2.6–11.9°C, cold climate with occasional snowfall, gradually becoming milder. March and April remain relatively cold, warming up in May. Common activities: Flower viewing (mainly not cherry blossoms), outdoor excursions (be mindful of weather changes). Recommended clothing: Warm coat, sweater, scarf, hat.
- Summer (June–August): Average 16.0–22.8°C, warm and humid climate with more rainfall, especially in August. Common activities: Beach activities, mountain hiking (be mindful of weather changes and sun protection). Recommended clothing: Light and breathable clothing, rain gear.
- Autumn (September–November): Average 7.2–20.0°C, pleasant climate, but with large temperature differences between day and night, and more rainfall. Common activities: Maple leaf viewing, outdoor leisure activities. Recommended clothing: Light jacket, long-sleeved clothing.
- Winter (December–February): Average -1.7–-0.2°C, cold climate with light snowfall but low temperatures, requiring attention to cold protection. Common activities: Skiing (depending on snow conditions), indoor activities. Recommended clothing: Thick warm coat, warm hat, gloves, scarf, waterproof and windproof clothing.
Muroran climatological average
Annual average temperature: approx. 9.7°C / Annual rainfall: approx. 1146 mm / Summer humidity: 70%–80% / Rainiest month: August
Muroran monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-1.7°C
62.5
February
-1.2°C
29.6
March
2.6°C
53.2
April
8.1°C
53.1
May
11.9°C
66.8
June
16°C
149.2
July
21.4°C
116.1
August
22.8°C
218.8
September
20°C
166.8
October
13.8°C
118.4
November
7.2°C
73.2
December
-0.2°C
38.6
Muroran weather for the next seven days
9/25
Friday
Overcast
18.3°C/14.9°C
9/26
Saturday
Sunny
17.9°C/15.1°C
9/27
Sunday
Overcast
19.5°C/18°C
9/28
Monday
Light rain shower
19.6°C/16.8°C
9/29
Tuesday
Patchy rain nearby
21.8°C/16.1°C
9/30
Wednesday
Sunny
19°C/16.8°C
10/1
Thursday
Patchy rain nearby
18.2°C/14.3°C
