

Muroran
Muroran is a town in Hokkaido, Japan, close to the sea. It has a population of about 81,580 (2020). The climate is classified as warm-summer humid continental (Köppen Dfb), with warm summers, cold winters and precipitation in every season.
Best: Jul–Sep. Warmth, sunshine and dry days, month by month.
Muroran at a glance
The months with the highest weather score
Average high in August
Average low in January
83 mm of rain
59 mm of rain
August
1 of them World Heritage
How Muroran has grown
People living in the built-up area (61 km² today), every five years since 1975; 2030 is the projection.
-34%143k in 1975 → 95k in 2025Weather in Muroran
Now and the next ten days. The 14 and 30-day outlooks are one click away.
Cloudy · wind 38 km/h · humidity 58%
When to go to Muroran
Each month's weather score (warmth, sun, dry days) with its temperatures and rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Score | 20 | 20 | 23 | 28 | 25 | 47 | 57 | 58 | 62 | 43 | 23 | 20 |
| High | -1° | -1° | 2° | 6° | 11° | 16° | 20° | 22° | 20° | 14° | 6° | 1° |
| Low | -5° | -5° | -2° | 1° | 6° | 12° | 16° | 19° | 17° | 10° | 2° | -3° |
| Rain (mm) | 78 | 59 | 62 | 86 | 117 | 116 | 179 | 229 | 190 | 113 | 101 | 83 |
| Wet days | 20 | 18 | 13 | 11 | 13 | 14 | 14 | 21 | 14 | 16 | 18 | 23 |
| Sea | 6° | 4° | 4° | 6° | 9° | 14° | 18° | 21° | 20° | 17° | 12° | 9° |
What's on in Muroran
Concerts, football matches, the public holidays ahead and the town's festivals through the year.
Monuments and museums in Muroran
More museums: 室蘭市民美術館 · 室蘭市白鳥大橋記念館 · 旧・港の文学館 · 港の文学館
Outdoors around Muroran
Hiking routes from the town, and what there is to do within 15 km: huts, viewpoints, climbing, camping, ski areas and dive sites.
Nature around Muroran
Wildlife in October
The birds and mammals of Japan seen most this month, compared with the rest of their year.
The sky over Muroran
Earthquakes around Muroran
The last 30 days within 300 km, and the record since 1950.
Strongest nearby since 1950
Tropical storms · Muroran
Universities and research institutes
Towns and villages around Muroran
Each with its own page: weather, climate and the best time to visit.
Muroran from above
Postal codes
Getting to Muroran
Places near Muroran
Places with a climate like Muroran
Matched month by month on temperature, rain and sunshine.