The best times to visit Okayama for ideal weather are

April 9th to June 17th

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

 

 


Other Okayama Travel Info

Weather in Okayama

Temperature

Average temperatures in Okayama vary drastically. Considering humidity, temperatures feel nice some of the year, but often too hot in the summer and cold in the winter with a fair chance of precipitation about half 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 Okayama, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally mid August where highs are regularly around 92.9°F (33.8°C) with temperatures rarely dropping below 77.8°F (25.4°C) at night.

Okayama Temperatures (Fahrenheit)

Key
High
Average
Low

Okayama 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.

Okayama Perceived Temperature (F)

Key
High
Average
Low

Okayama Perceived Temperature (C)

Key
High
Average
Low

 

Average Okayama 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 48.4 40.9 33
Feb 50.5 42.9 34.5
Mar 56.9 48.5 38.7
Apr 66.9 57.8 47.4
May 77.3 67.5 57.2
Jun 82.2 74.5 67.3
Jul 89.2 81.5 74.9
Aug 91.3 83.5 76.9
Sep 84.1 76.4 68.9
Oct 73.7 65.7 57.2
Nov 62.6 54.8 46.4
Dec 52.3 44.7 36.8

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 9.1 4.9 0.6
Feb 10.3 6.1 1.4
Mar 13.8 9.2 3.7
Apr 19.4 14.3 8.6
May 25.2 19.7 14
Jun 27.9 23.6 19.6
Jul 31.8 27.5 23.8
Aug 32.9 28.6 24.9
Sep 28.9 24.7 20.5
Oct 23.2 18.7 14
Nov 17 12.7 8
Dec 11.3 7.1 2.7

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Okayama 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 Okayama? Weather stations report a bit of annual snow likely to be deepest around February, especially close to early February. The best time to ski (if at all) in Okayama 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 Okayama.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Okayama (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 9% 0 1.2
Feb 19% 1.7 2.1
Mar 23% 0 3.3
Apr 22% 0 3.3
May 20% 0 4.2
Jun 24% 0 5.6
Jul 29% 0 7
Aug 20% 0 4
Sep 21% 0 5.9
Oct 20% 0 3.6
Nov 18% 0 2.8
Dec 15% 0 2.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 9 0 3
Feb 19 4.3 5.3
Mar 23 0 8.4
Apr 22 0 8.4
May 20 0 10.7
Jun 24 0 14.2
Jul 29 0 17.8
Aug 20 0 10.2
Sep 21 0 15
Oct 20 0 9.1
Nov 18 0 7.1
Dec 15 0 5.3

 

Humidity and Wind

Okayama has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is April (47.8% relative humidity), and the most humid month is July (65.4%).

Wind in Okayama is usually calm. The windiest month is December, followed by January and March. December’s average wind speed of around 6.5 knots (7.5 MPH or 12.1 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 late December where average top sustained speeds reach 14.4 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 6.3 Light breeze 13 Significant breeze
Feb 6 Light breeze 12.4 Significant breeze
Mar 6.3 Light breeze 13.2 Significant breeze
Apr 6.2 Light breeze 12.7 Significant breeze
May 5.8 Light breeze 11.7 Significant breeze
Jun 5.5 Light breeze 10.5 Gentle breeze
Jul 5.6 Light breeze 11 Significant breeze
Aug 5.7 Light breeze 10.9 Gentle breeze
Sep 5.3 Light breeze 10.1 Significant breeze
Oct 4.9 Light breeze 9.9 Gentle breeze
Nov 5.2 Light breeze 10.8 Significant breeze
Dec 6.5 Light breeze 13.4 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 51.5%
Feb 52.1%
Mar 49.7%
Apr 47.8%
May 49.5%
Jun 61.5%
Jul 65.4%
Aug 62.1%
Sep 60%
Oct 57.5%
Nov 57.9%
Dec 55.5%

 

Is it Safe to Travel to Okayama?

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 Okayama, Japan is February, followed by March and July. 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 Okayama in October. 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 48 in October means 48% of the tourists vs. February.

 

 

Overall Okayama Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 79.8°F (26.6°C) and 53°F (11.7°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 7 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

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 6 to 9 days of precipitation per month. June – August is the busiest season for tourism in Okayama, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 87.4°F (30.8°C) and 58.2°F (14.6°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 5 to 6 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 too cold this time of year in Okayama to be enjoyable for warm weather travelers. The average high during this season is between 54.3°F (12.4°C) and 48.1°F (8.9°C). On average, it rains or snows a fair amount: 3 to 5 times per month. These times of year are the second busiest with tourists.

 

Best Times to TravelJapan › Okayama, Japan