Osaka Climate & Weather: Monthly Averages & Seasonal Tips

Osaka

Posted: Friday, August 1, 2025

For foreign expats moving to Osaka from overseas or other parts of Japan, this guide provides helpful information on Osaka’s weather.

Osaka experiences four distinct seasons, with generally mild and pleasant weather throughout the year. However, it’s important to note that the typhoon season typically runs from July to October, with peak activity in August and September. During this time, strong winds and heavy rain can occur when a storm passes near the region. Typhoons (a type of tropical cyclone that brings strong winds and heavy rain) can impact travel and daily life during this period.

We hope this guide will help you prepare appropriate seasonal clothing and better enjoy your life in Japan.

Rainfall Level & Average Temperature in Osaka (2024)

Below is an overview of the rainfall levels and average temperatures in Osaka.
Rainfall is more frequent from March through October, including the rainy season in June and July, and the peak of typhoon season in August and September. Rainfall during the typhoon season in Osaka is generally lower than in Tokyo or Yokohama.

In recent years, the weather has been changing compared to historical averages. Due to the heat island effect, Osaka often experiences extended periods of extreme heat in the summer, with temperatures exceeding 35°C. As a result, air conditioning has become essential for daily life during the summer months.

	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sept.	Oct.	Nov.	Dec.
Rainfall Level (mm)	36.0	78.5	188.5	115.5	201.5	350.0	206.5	381.0	111.5	174.5	82.0	0.5
Max.Temp( °C)	11.8	12.5	14.8	21.8	24.8	27.7	33.5	33.6	30.9	24.5	17.8	13.2
Min.Temp( °C)	2.9	4.1	5.1	13.1	15.6	19.3	25.0	25.7	23.5	17.4	10.2	3.8
Ave.Temp( °C)	7.1	8.0	9.6	17.1	20.0	23.1	28.7	29.0	26.6	20.6	13.7	8.1
Humidity(%)	54	63	599	72	72	79	78	79	81	79	69	54

The data source: the Japan Meteorological Agency

Seasonal Clothing Guide for Osaka & Surrounding Areas

Spring (March – May): Light jackets and sweaters
Summer (June – August): Light clothing, short sleeves
Autumn (September – November): Similar to spring—light jackets and sweaters
Winter (December – February): Topcoats, wool suits, warm sweaters, and jackets

The best times to visit Osaka are April to May, when cherry blossoms bloom and the weather is pleasant, and October to November, when autumn leaves change color and the climate is enjoyable.
July and August can be hot and extremely humid. Winters rarely bring snow, and temperatures drop below freezing only a few days each year.

For more detailed clothing ideas, please refer to the seasonal clothing list above.

The Weather in Osaka and Advice for Every Season

Osaka is a large city where most people get around by public transit, bicycles, or on foot. Here are some handy tips to help you handle whatever weather Mother Nature throws your way:

Precipitation

Always check the weather forecast before heading out, and bring an umbrella if rain is expected.

Pro tip: If you’re unsure about the forecast, take a quick look outside before you leave. See if people are carrying umbrellas and follow their lead. And if you do get caught in the rain, you can always pop into a nearby convenience store to buy a cheap umbrella—they’re everywhere!

Heat

Osaka can get quite hot, so dress appropriately. The city is a concrete jungle that experiences the “heat island” effect common in large metropolitan areas.

Pro tip: If you’re heading to work, check if your office follows the “cool biz” dress code—a set of relaxed dress guidelines encouraged by the Japanese government to help office workers stay comfortable during the hot summer months.