Okayama weather in September (Okayama, Japan)

What can you expect from the weather in Okayama during September? Here's what the weather might have in store during this month.

In September, Okayama generally has high temperatures and heavy rainfall. September falls within the summer season. Daytime temperatures hover around 29°C (show in °F), while nights can cool down to about 21°C. Bear in mind, these are average temperatures, and it can get even warmer on particular days. Make sure to choose clothing that accommodates the warmth.

Okayama in September usually receives heavy rainfall, averaging around 175 mm (show in inches) for the month. Typically around 17 days of rainfall is expected.

The area enjoys a balanced 159 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

So this is a great month to visit if you prefer dry days with pleasant temperatures. April, May, September, October and November typically offer the most optimal weather. In contrast, January, February, July and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Okayama climate page with graphs.


Okayama, monthly averages in September

Show in Fahrenheit
Min Temperature 21.3°C  
Max Temperature 29.2°C  
Chance of Rain 56%  
Precipitation 175 mm  
Rainy days 17 days  
Humidity 71%  
Sunshine 159 hours  
Percentage Sunshine  

Where to go in Japan in September

Find out more about the weather in Japan in September and which places have the best weather conditions in this month.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So, what should you wear in Okayama in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Outdoor sports

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Okayama.

Our site offers climate and forecast data for every country in the world. Are you going to Japan? On this website you can find historical weather averages for many cities in Japan. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.