The best times to visit Rankoshi for ideal weather are

May 28th to October 14th

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



Other Rankoshi Travel Info

Weather in Rankoshi


Average temperatures in Rankoshi 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 26th 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 Rankoshi, 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 79.5°F (26.4°C) with temperatures rarely dropping below 67.3°F (19.6°C) at night.

Rankoshi Temperatures (Fahrenheit)


Rankoshi Temperatures (Celsius)


“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.

Rankoshi Perceived Temperature (F)


Rankoshi Perceived Temperature (C)



Average Rankoshi 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 31.5 27.7 23
Feb 32.4 28.4 22.7
Mar 39.1 34.1 28.2
Apr 50.3 43.5 36.1
May 59.5 52.1 45
Jun 68 60.7 54.7
Jul 74 67.5 62.2
Aug 77.7 71.1 65.3
Sep 71.9 65.3 58.7
Oct 60 54 46.5
Nov 47.4 42.4 36
Dec 36.1 32 26.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -0.3 -2.4 -5
Feb 0.2 -2 -5.2
Mar 3.9 1.2 -2.1
Apr 10.2 6.4 2.3
May 15.3 11.2 7.2
Jun 20 15.9 12.6
Jul 23.3 19.7 16.8
Aug 25.4 21.7 18.5
Sep 22.2 18.5 14.8
Oct 15.6 12.2 8.1
Nov 8.6 5.8 2.2
Dec 2.3 0 -3



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Rankoshi are June, April, and then July. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early June. For example, on the week of June 4th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late December with an average of 5 days of significant precipitation the week of December 24th.

When can you find snow in Rankoshi? Weather stations report very large amounts of snow likely to be deepest around February, especially close to early to mid February. The best time to ski (if at all) in Rankoshi 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 Rankoshi.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 57% 16.8 5.2
Feb 43% 20.8 3.9
Mar 32% 15.9 3.4
Apr 19% 0 2.7
May 22% 0 3
Jun 17% 0 2
Jul 21% 0 4.3
Aug 24% 0 5.2
Sep 32% 0 6.7
Oct 38% 0 5.4
Nov 52% 0.6 7
Dec 63% 4.1 7.2

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 57 42.7 13.2
Feb 43 52.8 9.9
Mar 32 40.4 8.6
Apr 19 0 6.9
May 22 0 7.6
Jun 17 0 5.1
Jul 21 0 10.9
Aug 24 0 13.2
Sep 32 0 17
Oct 38 0 13.7
Nov 52 1.5 17.8
Dec 63 10.4 18.3


Humidity and Wind

Rankoshi has some very humid months, with other comfortably humid months. The least humid month is March (57.1% relative humidity), and the most humid month is July (80.8%).

Wind in Rankoshi is usually moderate. The windiest month is February, followed by May and January. February’s average wind speed of around 8.7 knots (10 MPH or 16.1 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early May where average top sustained speeds reach 15.9 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

Avg. Relative Humidity


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

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 8.4 Gentle breeze 13.9 Significant breeze
Feb 8.7 Gentle breeze 14.5 Significant breeze
Mar 8 Gentle breeze 13.9 Significant breeze
Apr 8.4 Gentle breeze 14.8 Significant breeze
May 8.6 Gentle breeze 15.1 Significant breeze
Jun 7.8 Gentle breeze 13.1 Significant breeze
Jul 7.4 Gentle breeze 12.3 Significant breeze
Aug 6.6 Light breeze 11.4 Significant breeze
Sep 6.8 Light breeze 11.6 Significant breeze
Oct 7.3 Gentle breeze 12.8 Significant breeze
Nov 7.5 Gentle breeze 13 Significant breeze
Dec 8.4 Gentle breeze 14.1 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 57.9%
Feb 57.4%
Mar 57.1%
Apr 57.6%
May 68.3%
Jun 77.4%
Jul 80.8%
Aug 78.6%
Sep 72.2%
Oct 63%
Nov 60.4%
Dec 59.8%


Is it Safe to Travel to Rankoshi?

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 Rankoshi, 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 Rankoshi 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

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 Rankoshi Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 64.1°F (17.8°C) and 34.6°F (1.4°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 10 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 the least precipitation with 5 to 7 days of precipitation per month. June – August is fairly slow season for tourism in Rankoshi, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 74.5°F (23.6°C) and 41.5°F (5.3°C), which will feel chilly given the humidity and wind. It rains or snows a good amount: 10 to 16 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 Rankoshi to be enjoyable for warm weather travelers. The average high during this season is between 38.6°F (3.7°C) and 29°F (-1.7°C). On average, it rains or snows a very great amount: 12 to 19 times per month. These times of year are the second busiest with tourists.


Best Times to TravelJapan › Rankoshi, Japan