2026 Climate Averages

Weather: Osaka — September

Conditions are pleasant for sightseeing, though you might encounter occasional showers.

👍 Climate Overview

September is a good time to visit Osaka. Hot conditions with temperatures reaching 31°C—stay hydrated and seek shade. Rain is common, so pack an umbrella. Being off-peak, you'll find better deals and fewer crowds.

7.8
GoTripzi Score Great

Based on weather comfort, crowds, prices, and activity options

Avg High

31°C

Avg Low

24°C

Rainy days

12days

Daylight

12.4h

Feels like 35°C / 28°C — humidity makes it feel warmer

Rainfall

130mm

Sunshine

8.6h/day

Humidity

72%

Muggy
Sun Strength

5.9

High
Wind

13 km/h (gusts 31)

Is September a good time to visit Osaka?

Conditions are pleasant for sightseeing, though you might encounter occasional showers.

Now

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Feels like --
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Air Quality

Travel Context

  • Crowds
    Moderate
  • Travel Costs Shoulder Rates

Daylight

Sunrise

05:41

Sunset

18:07

12.4h daylight

Visiting Osaka in September: Pros & Cons

Pros

  • Fewer crowds and better hotel deals

Things to Do in September

Events & Festivals

🎉
Kishiwada Danjiri Festival
September Festival

Recommended for This Weather

🌅 Early morning sightseeing (before the heat)
🥾 Hiking & nature trails
🏛️ Museums & galleries
🍳 Cooking classes & food tours
🎭 Cultural tours & local experiences

Osaka Weather by Month

Month Avg High Avg Low Rain Sunshine Humidity UV Index Crowds Condition
Jan 10°C 3°C 7d (48mm) 7.5h
70% Humid
3.7 Moderate
Good
Feb 11°C 3°C 7d (61mm) 7.9h
68% Humid
4.9 Moderate
Good
Mar 16°C 7°C 11d (116mm) 8.2h
67% Humid
6.1 High
Excellent
Apr 21°C 11°C 9d (140mm) 9h
64% Moderate
7.4 Very High
Excellent
May 25°C 16°C 12d (189mm) 8.8h
68% Humid
7.6 Very High
Good
Jun 28°C 21°C 13d (224mm) 8.6h
73% Humid
7.4 Very High
Wet
Jul 32°C 26°C 16d (255mm) 9.2h
75% Muggy
7.3 Very High
Wet
Aug 34°C 27°C 12d (163mm) 10.1h
71% Muggy
7.4 Very High
Good
Sep Current 31°C 24°C 12d (130mm) 8.6h
72% Muggy
5.9 High
Good
Oct 24°C 16°C 11d (143mm) 8h
72% Humid
5 Moderate
Excellent
Nov 19°C 10°C 5d (72mm) 7.9h
72% Humid
4 Moderate
Excellent
Dec 12°C 5°C 5d (36mm) 7.8h
70% Humid
3.6 Moderate
Good

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3.4

Where to Stay

See hotels, apartments & rentals around Osaka – live prices from Booking.com, Expedia, Vrbo and more

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Osaka

Food capital with neon-lit Dotonbori, street food, Osaka Castle, and vibrant nightlife.

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What to Pack for September

Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool. A waterproof jacket and shoes are non-negotiable — showers are frequent.

Moderate Moderate

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📋Essentials
👕Clothing
👟Footwear
🎒Accessories
🧴Toiletries & Health

Planning a trip to Osaka?

💰 Off-peak — great deals available now

Frequently Asked Questions

Is September a good time to visit Osaka?
September is typically good for visiting Osaka, with average highs of 31°C and around 12 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.
Does it get cold at night in Osaka in September?
Nights stay pleasantly warm in Osaka during September, around 24°C. Light evening wear is sufficient, and outdoor dining is very comfortable. Many locals and visitors enjoy late-night walks and outdoor activities after sunset.
What should I pack for Osaka in September?
With highs of 31°C and lows of 24°C in September, we recommend: Compact umbrella, Waterproof jacket/shell, Lightweight breathable clothes, Sunscreen SPF 30+. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.
Does it rain a lot in Osaka in September?
Osaka typically sees around 12 rainy days in September. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.
How many hours of daylight are there in Osaka in September?
In September, Osaka gets approximately 12.4 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.
Is September peak season in Osaka?
No, September is not peak season in Osaka. Expect better value on accommodation, shorter queues at attractions, and fewer tourists at popular spots. This is an excellent time to experience the city like a local and enjoy a more authentic atmosphere.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Solar calculations: SunCalc (timezone: Asia/Tokyo)

Last Updated: February 2026

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