Osaka features a humid subtropical climate with four distinct seasons. Summers are hot, humid, and rainy, while winters are generally mild and dry with occasional cold winds. The city experiences abundant rainfall, especially during the summer rainy season, and enjoys vibrant cherry blossoms in spring and colourful foliage in autumn, making it a year-round travel destination.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Osaka’s climate is characterised by hot, humid summers and mild, relatively dry winters. From June to August, average highs reach 31–34°C, with high humidity making the heat feel more intense. The rainy season, known as Baiu, occurs from mid-June to late July, bringing steady light rain and occasional heavy downpours. August is the hottest and sunniest month, but also sees the risk of typhoons, especially in late summer. Autumn (September–November) brings milder temperatures, from 29°C in September to 17°C in November, and is known for vibrant autumn leaves and comfortable weather for outdoor activities.
Winters (December–February) are generally mild, with average highs of 9–12°C and lows around 3–5°C. Snowfall is rare and usually light, but cold winds from Osaka Bay can make it feel colder, especially at night. Spring (March–May) is one of the best seasons, with mild temperatures (13–23°C), moderate rainfall, and cherry blossoms blooming in late March to early April. Annual precipitation is about 1,300–1,500 mm, with June and July being the wettest months. Osaka enjoys around 1,900–2,000 hours of sunshine per year, with the most sunshine in summer. Winds are generally light to moderate, but can be brisk during storms or typhoons.
| Average climate data for Osaka, Japan | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 10 | 10 | 14 | 20 | 25 | 28 | 32 | 33 | 29 | 23 | 18 | 12 | 33 |
| Average minimum temperature (°C) | 3 | 3 | 6 | 11 | 16 | 20 | 24 | 25 | 22 | 16 | 10 | 5 | 3 |
| Average precipitation (mm) | 45 | 61 | 103 | 103 | 144 | 184 | 157 | 92 | 159 | 113 | 69 | 44 | 1,274 |
| Average rainfall days (days) | 6 | 6 | 10 | 9 | 10 | 11 | 10 | 7 | 9 | 8 | 6 | 6 | 98 |
| Average snowfall (mm) | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 |
| Average snowfall days (days) | 5 | 6 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 16 |
| Average relative humidity (%) | 62 | 60 | 59 | 60 | 63 | 69 | 70 | 67 | 68 | 66 | 65 | 63 | 64 |
| Average water temperature (°C) | 15 | 14 | 14 | 16 | 18 | 23 | 26 | 28 | 26 | 23 | 21 | 18 | 20 |
| Average daily daylight hours (h) | 10 | 10 | 12 | 13 | 14 | 14 | 14 | 13 | 12 | 11 | 10 | 9 | 12 |
| Average daily sunshine hours (h) | 4 | 4 | 5 | 6 | 6 | 5 | 5 | 7 | 5 | 5 | 5 | 4 | 5 |
| Average UV index | 3 | 4 | 6 | 8 | 9 | 10 | 11 | 10 | 8 | 6 | 3 | 2 | 7 |
The best time to visit Osaka is in spring (March to May) and autumn (September to November). These seasons offer mild, comfortable temperatures, lower humidity, and the city’s most spectacular scenery – cherry blossoms or colourful autumn leaves. Outdoor activities, festivals, and sightseeing are especially enjoyable during these clear, pleasant months.
The least favourable time to visit Osaka is from mid-June to early September, when the city experiences its rainy season, peak summer heat, and high humidity. Typhoons may also occur in late summer, bringing heavy rain and possible travel disruptions. Outdoor activities can be uncomfortable during this period.
Osaka has a humid subtropical climate with hot, humid summers and mild, dry winters. Rainfall is abundant, especially in summer, while spring and autumn are mild and comfortable.
The rainy season, or Baiu, in Osaka typically lasts from mid-June to late July, bringing steady light rain and high humidity. September can also be wet due to typhoons.
Snowfall in Osaka is rare and usually light. Winters are generally mild, with temperatures rarely dropping below freezing, but cold winds from the bay can make it feel colder.
Summer temperatures in Osaka range from 20°C at night to 34°C during the day. Humidity is high, making it feel hotter, especially in July and August.
Yes, Osaka can be affected by typhoons, mainly from August to September. Typhoons bring heavy rain and strong winds, so travellers should monitor weather forecasts during this period.
Cherry blossoms in Osaka usually bloom from late March to early April. This period offers mild weather and is ideal for outdoor activities and hanami (flower viewing) parties.
Osaka receives about 1,300–1,500 mm of precipitation each year, with the wettest months being June and July. Winter is the driest season.
The warmest month, with the highest average maximum temperature, is August (33.4 °C). The month with the lowest average maximum temperature is January (9.6 °C). Overall, the average maximum temperature over the whole year is 21.1 °C.
The month with the highest average minimum temperature is August (25.3 °C). The coldest month, with the lowest average minimum temperature, is January (2.9 °C). Overall, the average minimum temperature over the whole year is 13.3 °C.
The month with the highest average water temperature is August (27.8 °C). The month with the lowest average water temperature is February (13.9 °C). Overall, the average water temperature over the whole year is 20.2 °C.
The wettest month, with the highest amount of precipitation, is June (183.7 mm). The driest month, with the least amount of precipitation, is December (44 mm). Over the whole year there are 1,274.2 mm of rainfall on average.
The month with the most days of rain is June (11.2 days). The month with the fewest days of rain is December (5.5 days). Over the whole year there are 98.1 days of rain on average.
The month with the most snowfall is February (10.1 mm). The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0 mm). Over the whole year there are 20.1 mm of snowfall on average.
The month with the most days of snowfall is February (6.3 days). The months with the fewest days of snowfall are May, July, August and September (0 days). Over the whole year there are 15.8 days of snowfall on average.
The month with the highest average relative humidity is July (70 %). The month with the lowest average relative humidity is March (59.3 %). The overall average relative humidity over the whole year is 64.2 %.
The month with the longest days, so the most daylight, is June (Average daylight: 14 h). The month with the shortest days, so the least daylight, is December (Average daylight: 9.1 h). Over the whole year there are 11.9 h of daylight per day on average.
The month with the most sunshine per day is August (Average sunshine: 7.1 h). The month with the least sunshine per day is December (Average sunshine: 4 h). Over the whole year there are 5.1 h of sunlight per day on average.
The month with the highest average UV index is July (UV index: 11). The month with the lowest average UV index is December (UV index: 2). Over the whole year the average UV index is 6.7.
