The best times to visit Muroran for ideal weather are

May 28th to October 7th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other Muroran Travel Info

Weather in Muroran

Temperature

Average temperatures in Muroran vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 30th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Muroran, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 78.1°F (25.6°C) with temperatures rarely dropping below 67.5°F (19.7°C) at night.

Muroran Temperatures (Fahrenheit)

Key
High
Average
Low

Muroran Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Muroran Perceived Temperature (F)

Key
High
Average
Low

Muroran Perceived Temperature (C)

Key
High
Average
Low

 

Average Muroran Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 33 28.6 23.9
Feb 33.8 29.1 24
Mar 40.3 34.4 29.1
Apr 50.2 42.8 36.7
May 59 51 44.9
Jun 65.7 58.8 53.9
Jul 72.1 66.1 61.8
Aug 76.1 70.3 65.9
Sep 71.8 65.8 60.2
Oct 60.8 55 48.7
Nov 49.2 43.9 38
Dec 38.1 33.6 28.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 0.6 -1.9 -4.5
Feb 1 -1.6 -4.4
Mar 4.6 1.3 -1.6
Apr 10.1 6 2.6
May 15 10.6 7.2
Jun 18.7 14.9 12.2
Jul 22.3 18.9 16.6
Aug 24.5 21.3 18.8
Sep 22.1 18.8 15.7
Oct 16 12.8 9.3
Nov 9.6 6.6 3.3
Dec 3.4 0.9 -1.9

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Muroran are February, March, and then January. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid January. For example, on the week of January 8th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid July with an average of 3 days of significant precipitation the week of July 9th.

When can you find snow in Muroran? Weather stations report a good amount of seasonal snow likely to be deepest around March, especially close to early to mid March. The best time to ski (if at all) in Muroran is often around around March 12th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Muroran.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Muroran (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 19% 2.5 1.9
Feb 15% 4.5 1.6
Mar 18% 6.6 2.1
Apr 20% 0 3.1
May 23% 0 4.6
Jun 20% 0 3.3
Jul 29% 0 6.7
Aug 27% 0 6.4
Sep 25% 0 4.9
Oct 27% 0 4.7
Nov 29% 0.5 4
Dec 20% 0.4 2.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 19 6.4 4.8
Feb 15 11.4 4.1
Mar 18 16.8 5.3
Apr 20 0 7.9
May 23 0 11.7
Jun 20 0 8.4
Jul 29 0 17
Aug 27 0 16.3
Sep 25 0 12.4
Oct 27 0 11.9
Nov 29 1.3 10.2
Dec 20 1 6.9

 

Humidity and Wind

Muroran has some extremely humid months, and above average humidity throughout the year. The least humid month is January (61.7% relative humidity), and the most humid month is July (88.5%).

Wind in Muroran is usually moderate. The windiest month is December, followed by January and November. December’s average wind speed of around 12.2 knots (14 MPH or 22.5 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late December where average top sustained speeds reach 20.2 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Muroran.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 11.2 Significant breeze 17.4 Strong breeze
Feb 10 Gentle breeze 16.2 Significant breeze
Mar 9.5 Gentle breeze 16.1 Strong breeze
Apr 8.7 Gentle breeze 15.3 Significant breeze
May 8.1 Gentle breeze 14.1 Strong breeze
Jun 6.7 Light breeze 11.7 Significant breeze
Jul 6.7 Light breeze 11.7 Strong breeze
Aug 6.4 Light breeze 10.9 Gentle breeze
Sep 7.2 Gentle breeze 12.6 Strong breeze
Oct 9.3 Gentle breeze 15.7 Significant breeze
Nov 10.3 Gentle breeze 17.3 Strong breeze
Dec 12.2 Significant breeze 18.8 Strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 61.7%
Feb 63.2%
Mar 66.6%
Apr 67.2%
May 76.1%
Jun 86.4%
Jul 88.5%
Aug 87%
Sep 79.2%
Oct 69.2%
Nov 64.9%
Dec 62.7%

 

Is it Safe to Travel to Muroran?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for Japan; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Nov 14, 2023.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Muroran, Japan is January, followed by March and April. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Muroran in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 73.3 in December means 73.3% of the tourists vs. January.

 

 

Overall Muroran Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 61.5°F (16.4°C) and 36.2°F (2.3°C) with warmer temperatures in the later months. Rain is somewhat common with 5 to 7 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 6 to 9 days of precipitation per month. June – August is fairly slow season for tourism in Muroran, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 73.9°F (23.3°C) and 43.4°F (6.3°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 8 to 9 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is far too cold this time of year in Muroran to be enjoyable for warm weather travelers. The average high during this season is between 40.7°F (4.8°C) and 30.6°F (-0.8°C). On average, it rains or snows a fair amount: 4 to 6 times per month. These times of year are the second busiest with tourists.

 

Best Times to Travel› Japan › Muroran, Japan