The weather was great throughout the trip, and every photo I took looked beautiful. The tour guide was very friendly, speaking four languages: Mandarin, English, Japanese, and Cantonese, and providing detailed explanations. The time allotted at each attraction was just right, allowing ample time for taking pictures. I'd like to try a summer day trip in the future.
Anonymous User
Family
Muroran Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Muroran year round climate
Spring (March–May): Average 36–53°F, 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 60–73°F, 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 44–68°F, 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–-32.4°F, 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. 49.5°F / Annual rainfall: approx. 1146 mm / Summer humidity: 70%–80% / Rainiest month: August
Muroran monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
28.9°F
62.5
February
29.8°F
29.6
March
36.7°F
53.2
April
46.6°F
53.1
May
53.4°F
66.8
June
60.8°F
149.2
July
70.5°F
116.1
August
73°F
218.8
September
68°F
166.8
October
56.8°F
118.4
November
45°F
73.2
December
31.6°F
38.6
Muroran weather for the next seven days
5/14
Thursday
Patchy rain nearby
50.9°F/44.3°F
5/15
Friday
Sunny
58.5°F/43.8°F
5/16
Saturday
Sunny
60.1°F/48.6°F
5/17
Sunday
Sunny
58.5°F/47.4°F
5/18
Monday
Patchy rain nearby
56.5°F/46.9°F
5/19
Tuesday
Partly Cloudy
56.7°F/49.5°F
5/20
Wednesday
Partly Cloudy
56.8°F/49°F
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