The best times to visit Omachi for ideal weather are

April 30th to July 1st

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

 

 


Other Omachi Travel Info

Weather in Omachi

Temperature

Average temperatures in Omachi vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a fair chance of precipitation about half 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 Omachi, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 90°F (32.2°C) with temperatures rarely dropping below 69.7°F (20.9°C) at night.

Omachi Temperatures (Fahrenheit)

Key
High
Average
Low

Omachi 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.

Omachi Perceived Temperature (F)

Key
High
Average
Low

Omachi Perceived Temperature (C)

Key
High
Average
Low

 

Average Omachi 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 40.5 31 21.2
Feb 43.7 33.5 22.9
Mar 52.3 40.7 29.2
Apr 63.3 50.7 38
May 74.3 61.4 48.9
Jun 80 68.7 59.1
Jul 86.3 75.9 67.4
Aug 88.2 77.2 68.7
Sep 79.8 69 60.2
Oct 68.2 57.2 47.4
Nov 56.6 46.1 36.2
Dec 46 36.7 27.4

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 4.7 -0.6 -6
Feb 6.5 0.8 -5.1
Mar 11.3 4.8 -1.6
Apr 17.4 10.4 3.3
May 23.5 16.3 9.4
Jun 26.7 20.4 15.1
Jul 30.2 24.4 19.7
Aug 31.2 25.1 20.4
Sep 26.6 20.6 15.7
Oct 20.1 14 8.6
Nov 13.7 7.8 2.3
Dec 7.8 2.6 -2.6

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Omachi are January, December, and then November. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early July with an average of 3 days of significant precipitation the week of July 2nd.

When can you find snow in Omachi? 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 Omachi.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Omachi (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 10% 0 1.2
Feb 14% 0 2
Mar 20% 0 2.9
Apr 22% 0 3.4
May 21% 0 3.9
Jun 27% 0 4.7
Jul 29% 0 4.7
Aug 22% 0 5
Sep 22% 0 5.3
Oct 20% 0 4.1
Nov 14% 0 2.5
Dec 13% 0 1.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 10 0 3
Feb 14 0 5.1
Mar 20 0 7.4
Apr 22 0 8.6
May 21 0 9.9
Jun 27 0 11.9
Jul 29 0 11.9
Aug 22 0 12.7
Sep 22 0 13.5
Oct 20 0 10.4
Nov 14 0 6.4
Dec 13 0 4.3

 

Humidity and Wind

Omachi has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is April (44.5% relative humidity), and the most humid month is September (64.1%).

Wind in Omachi is usually calm. The windiest month is April, followed by March and May. April’s average wind speed of around 5.4 knots (6.2 MPH or 10 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 March where average top sustained speeds reach 12.4 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 4.1 Light breeze 8.6 Gentle breeze
Feb 4.6 Light breeze 9.6 Gentle breeze
Mar 5.3 Light breeze 11.2 Gentle breeze
Apr 5.4 Light breeze 10.9 Gentle breeze
May 5.2 Light breeze 10.5 Gentle breeze
Jun 4.3 Light breeze 9.1 Gentle breeze
Jul 4.8 Light breeze 9.6 Gentle breeze
Aug 4.4 Light breeze 8.9 Gentle breeze
Sep 4.1 Light breeze 8.6 Gentle breeze
Oct 4 Light breeze 8.3 Gentle breeze
Nov 4.3 Light breeze 8.8 Gentle breeze
Dec 4.9 Light breeze 9.8 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 53.5%
Feb 52.1%
Mar 46.9%
Apr 44.5%
May 45.4%
Jun 58.7%
Jul 62.7%
Aug 62.4%
Sep 64.1%
Oct 63.6%
Nov 60.2%
Dec 56.3%

 

Is it Safe to Travel to Omachi?

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 Omachi, Japan is May, followed by October and March. 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 Omachi in July. 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 82.7 in July means 82.7% of the tourists vs. May.

 

 

Overall Omachi Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 76.6°F (24.8°C) and 46.8°F (8.2°C) with warmer temperatures in the later months. Rain is somewhat common with roughly 6 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 quite warm. These months see the most precipitation with 7 to 9 days of precipitation per month. June – August is fairly slow season for tourism in Omachi, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 83.4°F (28.6°C) and 52.3°F (11.3°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 4 to 6 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.

Winter (December through February)

Weather is far too cold this time of year in Omachi to be enjoyable for warm weather travelers. The average high during this season is between 48.4°F (9.1°C) and 38.7°F (3.7°C). On average, it rains or snows a smalll amount: 3 to 4 times per month. These times of year are the slowest with tourists.

 

Best Times to Travel› Japan › Omachi, Japan