The best times to visit Shimoniikawa for ideal weather are
April 23rd to July 1st
September 10th to November 18th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Shimoniikawa Travel Guide
Other Shimoniikawa Travel Info
Weather in Shimoniikawa
Average temperatures in Shimoniikawa vary drastically. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 23rd 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 Shimoniikawa, 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 90.5°F (32.5°C) with temperatures rarely dropping below 75°F (23.9°C) at night.
Shimoniikawa Temperatures (Fahrenheit)
Shimoniikawa Temperatures (Celsius)
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.
Shimoniikawa Perceived Temperature (F)
Shimoniikawa Perceived Temperature (C)
Average Shimoniikawa 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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Shimoniikawa are May, June, and then August. 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 early to mid December with an average of 5 days of significant precipitation the week of December 10th.
When can you find snow in Shimoniikawa? Weather stations report a good amount of seasonal snow likely to be deepest around February, especially close to early January. The best time to ski (if at all) in Shimoniikawa is often around around February 5th 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 Shimoniikawa.
Snow on the Ground
The graph below shows the average snow on the ground in Shimoniikawa (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Shimoniikawa has some very humid months, with other comfortably humid months. The least humid month is April (59% relative humidity), and the most humid month is December (75%).
Wind in Shimoniikawa is usually calm. The windiest month is March, followed by April and May. March’s average wind speed of around 6.3 knots (7.3 MPH or 11.7 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 13.6 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Shimoniikawa.
The graph below shows wind speed (max and average) in knots.
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||5.3||Light breeze||10||Gentle breeze|
|Feb||5.4||Light breeze||10.4||Gentle breeze|
|Mar||6.3||Light breeze||12.4||Gentle breeze|
|Apr||6.3||Light breeze||12.6||Significant breeze|
|May||6||Light breeze||12||Gentle breeze|
|Jun||4.9||Light breeze||9.7||Gentle breeze|
|Jul||5.1||Light breeze||10.1||Gentle breeze|
|Aug||5.2||Light breeze||10||Gentle breeze|
|Sep||5.2||Light breeze||10||Gentle breeze|
|Oct||5.5||Light breeze||10.6||Gentle breeze|
|Nov||5.6||Light breeze||10.4||Gentle breeze|
|Dec||5.8||Light breeze||10.9||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Shimoniikawa?
Our best data indicates this area is generally safe, except in a few regions. As of Oct 07, 2019 there are regional travel advisories for Japan; exercise normal security precautions and avoid some areas. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 01, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Shimoniikawa, 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 Shimoniikawa 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
Overall Shimoniikawa Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 75.3°F (24.1°C) and 48.4°F (9.1°C) with warmer temperatures in the later months. Rain is very common with 8 to 14 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 least precipitation with 8 to 12 days of precipitation per month. June – August is fairly slow season for tourism in Shimoniikawa, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 83.8°F (28.8°C) and 55.5°F (13.1°C), which will feel comfortable given the humidity and wind. It rains or snows a good amount: 9 to 16 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 too cold this time of year in Shimoniikawa to be enjoyable for warm weather travelers. The average high during this season is between 51.1°F (10.6°C) and 41.8°F (5.4°C). On average, it rains or snows a very great amount: 15 to 21 times per month. These times of year are the slowest with tourists.