The best times to visit Shiraoi 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 Shiraoi Travel Info

Weather in Shiraoi


Average temperatures in Shiraoi 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 27th 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 Shiraoi, 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 76.6°F (24.8°C) with temperatures rarely dropping below 66.3°F (19.1°C) at night.

Shiraoi Temperatures (Fahrenheit)


Shiraoi 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.

Shiraoi Perceived Temperature (F)


Shiraoi Perceived Temperature (C)



Average Shiraoi 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 32.6 25.3 15.7
Feb 33.6 26.3 16
Mar 39.9 32.9 24.5
Apr 49.1 41.4 33.3
May 58 50.2 43.3
Jun 63.9 57.9 53.1
Jul 70.8 65.4 61
Aug 75.2 69.6 64.4
Sep 71.9 64.8 56.7
Oct 61 52.6 42.1
Nov 48.8 41 31.5
Dec 37.8 30.8 22.2

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 0.3 -3.7 -9.1
Feb 0.9 -3.2 -8.9
Mar 4.4 0.5 -4.2
Apr 9.5 5.2 0.7
May 14.4 10.1 6.3
Jun 17.7 14.4 11.7
Jul 21.6 18.6 16.1
Aug 24 20.9 18
Sep 22.2 18.2 13.7
Oct 16.1 11.4 5.6
Nov 9.3 5 -0.3
Dec 3.2 -0.7 -5.4



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Shiraoi are January, March, and then February. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid January. For example, on the week of January 15th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early September with an average of 3 days of significant precipitation the week of September 3rd.

When can you find snow in Shiraoi? Weather stations report no annual snow. 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 Shiraoi.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 12% 0 1.4
Feb 20% 0 1.6
Mar 20% 0 2.3
Apr 23% 0 3.7
May 28% 0 5.3
Jun 20% 0 4
Jul 26% 0 6.5
Aug 27% 0 7.1
Sep 29% 0 7.8
Oct 25% 0 4.8
Nov 24% 0 3.5
Dec 20% 0 2.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 12 0 3.6
Feb 20 0 4.1
Mar 20 0 5.8
Apr 23 0 9.4
May 28 0 13.5
Jun 20 0 10.2
Jul 26 0 16.5
Aug 27 0 18
Sep 29 0 19.8
Oct 25 0 12.2
Nov 24 0 8.9
Dec 20 0 6.9


Humidity and Wind

Shiraoi has some extremely humid months, with other comfortably humid months. The least humid month is January (58.9% relative humidity), and the most humid month is July (85%).

Wind in Shiraoi is usually calm. The windiest month is October, followed by April and November. October’s average wind speed of around 6.7 knots (7.7 MPH or 12.4 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid October where average top sustained speeds reach 13.9 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 6 Light breeze 11.7 Significant breeze
Feb 6.4 Light breeze 12.5 Significant breeze
Mar 6.5 Light breeze 12.6 Significant breeze
Apr 6.6 Light breeze 12.8 Significant breeze
May 6.3 Light breeze 11.8 Significant breeze
Jun 5 Light breeze 9.2 Gentle breeze
Jul 5.3 Light breeze 9.6 Significant breeze
Aug 5.4 Light breeze 9.8 Gentle breeze
Sep 6.2 Light breeze 11.5 Significant breeze
Oct 6.7 Light breeze 12.8 Significant breeze
Nov 6.5 Light breeze 12.8 Significant breeze
Dec 6.4 Light breeze 12.7 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 58.9%
Feb 60.7%
Mar 62.8%
Apr 65.6%
May 72.6%
Jun 83.8%
Jul 85%
Aug 82.8%
Sep 74.4%
Oct 66.9%
Nov 63.2%
Dec 60.3%


Is it Safe to Travel to Shiraoi?

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 Shiraoi, 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 Shiraoi 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 Shiraoi Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 60.3°F (15.7°C) and 35.5°F (1.9°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 9 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 8 days of precipitation per month. June – August is fairly slow season for tourism in Shiraoi, 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 43°F (6.1°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 7 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 Shiraoi to be enjoyable for warm weather travelers. The average high during this season is between 40.5°F (4.7°C) and 30.9°F (-0.6°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 TravelJapan › Shiraoi, Japan