Onomichi weather in September (Hiroshima, Japan)

What should you pack for a trip to Onomichi in September? Find all the essential weather information for this month in our guide.

Temperatures

September in Onomichi generally includes high temperatures and heavy rainfall. The summer season is characteristic of September. Expect temperatures to climb to 29°C during the day, with nighttime readings dropping to 21°C. Note that these temperatures are average, but some days may be hotter. Dress in cool, breathable fabrics to stay comfortable in the heat.

Precipitation

Onomichi in September usually receives heavy rainfall, averaging around 162 mm for the month. Expect around 16 days of rain based on historical data.

Average sunshine

The area experiences a moderate amount of sunshine, with approximately 169 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

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, March, June, July and December tend to have less optimal conditions.

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

 

Onomichi, monthly averages in September

Min Temperature 21°C  

Max Temperature 29°C  

Chance of Rain 53%  

Precipitation 162 mm  

Rainy days 16 days  

Humidity 68% *  

Windspeed 7 km/h *  

Sunshine 169 hours *  

Percentage Sunshine 43% *  

Data from: Hiroshima, Japan (24 KM, 15 Miles).

Where to go in Japan in September

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

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

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.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Onomichi.

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 travel conditions. Find out where to go with our weather planner.