easeweather.com
Units
°C
°F
Osaka
Forecast Today Tomorrow
more
JapanUnited States

Weather in Osaka for September 2025

Your guide to Osaka weather in September - trends and predictions
  • In general, the average temperature in Osaka at the beginning of September is 32.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 29 °C by the end of September.

  • Expect significant rainfall in Osaka during September, with an average of 16 rainy days.

  • Is September a good time to visit Osaka? check out the best time to travel to Osaka page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
30°/23°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
68 %
Avg humidity

Osaka in September average weather

Move between months or click on a day
Select a date

You can click on date

Access Osaka weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Got it

Temperatures trend during September in Osaka

See the weather trend as well as the moving average line
Weather Expert

Are you interested in traveling to Osaka in September?

Leave your details and get the best deals for September. Speak with a holiday expert specializing in Osaka today.

September weather day by day

Click on a date for more information
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
32° /23° 2.6 mm 7
2 Sept. Overcast
Overcast
32° /24° 2.2 mm 7
3 Sept. Partly cloudy
Partly cloudy
33° /24° 0.7 mm 8
4 Sept. Patchy rain possible
Patchy rain possible
33° /24° 0.4 mm 7
5 Sept. Patchy rain possible
Patchy rain possible
33° /24° 3.2 mm 8
6 Sept. Light rain shower
Light rain shower
31° /24° 1.8 mm 7
7 Sept. Overcast
Overcast
31° /23° 0 mm 8
8 Sept. Light rain shower
Light rain shower
30° /24° 0.4 mm 7
9 Sept. Patchy rain possible
Patchy rain possible
33° /24° 1.3 mm 8
10 Sept. Light rain shower
Light rain shower
32° /24° 3.9 mm 7
11 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
31° /24° 6.1 mm 7
12 Sept. Partly cloudy
Partly cloudy
31° /24° 4.1 mm 7
13 Sept. Partly cloudy
Partly cloudy
31° /24° 0.7 mm 8
14 Sept. Partly cloudy
Partly cloudy
33° /24° 0.3 mm 8
15 Sept. Cloudy
Cloudy
29° /25° 1.6 mm 7
16 Sept. Partly cloudy
Partly cloudy
32° /25° 2.9 mm 8
17 Sept. Patchy rain possible
Patchy rain possible
32° /25° 0.3 mm 7
18 Sept. Patchy rain possible
Patchy rain possible
32° /25° 1.1 mm 7
19 Sept. Patchy rain possible
Patchy rain possible
32° /25° 0.8 mm 8
20 Sept. Patchy rain possible
Patchy rain possible
31° /24° 1.2 mm 8
21 Sept. Patchy rain possible
Patchy rain possible
31° /25° 6.3 mm 7
22 Sept. Light rain shower
Light rain shower
27° /22° 17.7 mm 6
23 Sept. Patchy rain possible
Patchy rain possible
28° /20° 0.2 mm 6
24 Sept. Patchy rain possible
Patchy rain possible
28° /20° 0.4 mm 6
25 Sept. Sunny
Sunny
29° /19° 0 mm 7
26 Sept. Partly cloudy
Partly cloudy
30° /21° 0 mm 7
27 Sept. Partly cloudy
Partly cloudy
31° /23° 0.7 mm 8
28 Sept. Light rain shower
Light rain shower
29° /23° 3.3 mm 6
29 Sept. Partly cloudy
Partly cloudy
28° /22° 0.9 mm 7
30 Sept. Light rain shower
Light rain shower
28° /21° 0.2 mm 6
Next
Important Notice
Our weather forecast for Osaka in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Osaka forecast closer to your planned date for the most up-to-date weather information.

Guide for Osaka in September

In September, Osaka, Japan experiences a transition from the hot and humid summer to a more temperate autumn. At the beginning of the month, the weather remains quite warm and humid, with average daytime temperatures around 28° to 30°.

Nights are slightly cooler but still relatively warm, averaging around 22° to 24°. The humidity can be quite high, often exceeding 70%, which can make the heat feel more intense.

Rain is also common in early September, as the tail end of the typhoon season can bring heavy showers and occasional storms.

As the month progresses, the weather starts to cool down gradually. By the end of September, daytime temperatures typically range from 24° to 26°, while nighttime temperatures drop to a more comfortable range of 18° to 20°.

The humidity levels also begin to decrease, making the air feel fresher and more pleasant. Rainfall becomes less frequent, although occasional showers can still occur.

Overall, September in Osaka is a month of change, moving from the intense heat of summer to the more moderate and enjoyable conditions of autumn.

Visitors should be prepared for a mix of warm and cooler days, and it’s advisable to carry an umbrella due to the unpredictable nature of the weather during this transitional period.

Osaka in September - FAQ

Is September a good time to visit Osaka?
Yes, September is a good time to traveling to Osaka, read more about the best time to visit Osaka.
What are the expected maximum and minimum temperatures in Osaka during September?
During September, expect a variety of temperatures with highs around 30° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Osaka during September?
Moderate rainfall is anticipated in Osaka during September, with a total of 87.1 mm spread over approximately 16 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Osaka during September?
The average wind speed in Osaka during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Osaka in September?

As you prepare for your trip to Osaka in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Osaka, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
    • Sandals/Flip-flops: Comfortable for warm climates
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips

September rainfall patterns in Osaka

Explore the daily rainfall trends and prepare for Osakas September weather 💧

UV exposure in Osaka during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Ōsaka
Select a province for an accurate weather forecast

Quick links

Location coordinates Where is Osaka?

Get accurate weather forecasts for Osaka, located at latitude 34.694 and longitude 135.502. Stay updated with localized weather information tailored for Osaka.

Related locations
Select a location for accurate weather forecast
More Locations
Found a mistake?
We appreciate your attention to details. Tell us here.