Osaka weather
Our guide to the weather in Osaka during September
We've looked at the most up-to-date weather data for Osaka, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Osaka weather in September.
What's the weather like in Osaka during September?
It was very warm and humid when I visited towards the end of September. Apparently, that was a little unusual. We did see some rain but it was never cold.
Answered by ScribbleStu
How warm is it in Osaka during September?
The temperature reaches around 29℃ during the daytime in September, falling away to 20℃ at night. Of course, the high humidity will make it feel even hotter. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it rain in Osaka during September?
On average, there will be 8 rainy days during the month, amounting to 243.6mm in total. That's a lot of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. Due to the high temperature and humidity, you might expect lots of thunderstorms, however they're actually fairly infrequent at this time of year. On average, September will see just 1 days that produce a storm.
Is it windy in Osaka during September?
You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in September. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.
How warm is the sea in Osaka during September?
The water around Osaka reaches a very pleasant 26℃ during September. This is very warm, and will feel bath-like. People who normally feel the cold will find this temperature perfectly acceptable. The hot air temperature and relatively high humidity will mean that you will feel comfortably warm when coming out of the water.
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