The best times to visit Koka for ideal weather are

April 23rd to June 24th

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



Other Koka Travel Info

Weather in Koka


Average temperatures in Koka 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 22nd 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 Koka, 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 92.7°F (33.7°C) with temperatures rarely dropping below 73.5°F (23.1°C) at night.

Koka Temperatures (Fahrenheit)


Koka 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.

Koka Perceived Temperature (F)


Koka Perceived Temperature (C)



Average Koka 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 46.6 37.9 29.3
Feb 48.8 39.7 30.6
Mar 56 45.3 34.4
Apr 66.1 54.4 41.9
May 75.4 64.1 52.7
Jun 80.8 71.6 63.4
Jul 88.3 78.8 71.2
Aug 90.6 80.5 72.4
Sep 82.9 73.1 64.6
Oct 72.8 62.5 53
Nov 61.4 51.4 41.5
Dec 51.3 42.2 33.2

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 8.1 3.3 -1.5
Feb 9.3 4.3 -0.8
Mar 13.3 7.4 1.3
Apr 18.9 12.4 5.5
May 24.1 17.8 11.5
Jun 27.1 22 17.4
Jul 31.3 26 21.8
Aug 32.6 26.9 22.4
Sep 28.3 22.8 18.1
Oct 22.7 16.9 11.7
Nov 16.3 10.8 5.3
Dec 10.7 5.7 0.7



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Koka are January, December, and then October. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late November to early December. For example, on the week of November 26th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early July with an average of 4 days of significant precipitation the week of July 2nd.

When can you find snow in Koka? 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 Koka.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 15% 0 2.1
Feb 22% 0 3.2
Mar 27% 0 4.9
Apr 25% 0 4.3
May 24% 0 5.3
Jun 33% 0 7.8
Jul 35% 0 7.8
Aug 23% 0 5
Sep 26% 0 8.4
Oct 19% 0 4.9
Nov 20% 0 3
Dec 17% 0 2.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 15 0 5.3
Feb 22 0 8.1
Mar 27 0 12.4
Apr 25 0 10.9
May 24 0 13.5
Jun 33 0 19.8
Jul 35 0 19.8
Aug 23 0 12.7
Sep 26 0 21.3
Oct 19 0 12.4
Nov 20 0 7.6
Dec 17 0 5.3


Humidity and Wind

Koka has some very humid months, with other comfortably humid months. The least humid month is April (57.1% relative humidity), and the most humid month is July (72%).

Wind in Koka is usually calm. The windiest month is December, followed by January and March. December’s average wind speed of around 5.8 knots (6.6 MPH or 10.7 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 mid March where average top sustained speeds reach 13.2 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 5.8 Light breeze 12 Significant breeze
Feb 5.6 Light breeze 11.7 Significant breeze
Mar 5.7 Light breeze 12.4 Significant breeze
Apr 5.3 Light breeze 11.7 Significant breeze
May 5.1 Light breeze 11.2 Significant breeze
Jun 4.4 Light breeze 9.5 Gentle breeze
Jul 4.2 Light breeze 9.6 Significant breeze
Aug 4.2 Light breeze 9.5 Gentle breeze
Sep 4.5 Light breeze 9.9 Significant breeze
Oct 4.2 Light breeze 9.8 Gentle breeze
Nov 4.3 Light breeze 9.7 Significant breeze
Dec 5.8 Light breeze 11.9 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 62.9%
Feb 62.3%
Mar 59.3%
Apr 57.1%
May 58.9%
Jun 68.6%
Jul 72%
Aug 69.8%
Sep 70.4%
Oct 68.9%
Nov 69.3%
Dec 63.6%


Is it Safe to Travel to Koka?

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 Koka, 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 Koka 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

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 somewhat 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 Koka Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 77.9°F (25.5°C) and 52.4°F (11.3°C) with warmer temperatures in the later months. Rain is somewhat common with roughly 8 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 11 days of precipitation per month. June – August is fairly slow season for tourism in Koka, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 85.8°F (29.9°C) and 57.2°F (14°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 6 to 8 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 Koka to be enjoyable for warm weather travelers. The average high during this season is between 53.7°F (12.1°C) and 46.2°F (7.9°C). On average, it rains or snows a fair amount: 5 to 6 times per month. These times of year are the slowest with tourists.


Best Times to TravelJapan › Koka, Japan