Shinjuku
September
Weather in Shinjuku for September 2025
Your guide to Shinjuku weather in September - trends and predictions
In general, the average temperature in Shinjuku at the beginning of September is 26.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 23.9 °C by the end of September.
The climate of Shinjuku in September is notably wet, with an average of 12 rainy days, and a total of 135.6 mm of precipitation.
Is September a good time to visit Shinjuku? check out the best time to travel to Shinjuku page.
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Temperatures
Rain 🌧️
More
18
Dry days
12
Rainy days
0
Snow days
27°/24°
Temperatures
29 km/h
Avg max wind
81 %
Avg humidity
Shinjuku Weather September
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  27° | 2  27° | 3 27° | 4 25° | 5  26° | 6  27° | 7 27° |
| 8  27° | 9 29° | 10 28° | 11 28° | 12 28° | 13 28° | 14  28° |
| 15 28° | 16 27° | 17 27° | 18 29° | 19 29° | 20 30° | 21 29° |
| 22 28° | 23 24° | 24 23° | 25 24° | 26 25° | 27 25° | 28 24° |
| 29 23° | 30  23° |
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Temperatures trend during September in Shinjuku
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Moderate or heavy rain shower | 27° /26° | 16.7 mm | 6 | |
| 2 Sept. | Patchy rain possible | 27° /27° | 0.1 mm | 6 | |
| 3 Sept. | Moderate or heavy rain shower | 27° /23° | 60.7 mm | 6 | |
| 4 Sept. | Patchy rain possible | 25° /23° | 1.5 mm | 6 | |
| 5 Sept. | Partly cloudy | 26° /23° | 0 mm | 7 | |
| 6 Sept. | Sunny | 27° /25° | 0 mm | 7 | |
| 7 Sept. | Sunny | 27° /25° | 0 mm | 7 | |
| 8 Sept. | Cloudy | 27° /26° | 0 mm | 6 | |
| 9 Sept. | Moderate rain at times | 29° /25° | 1.8 mm | 6 | |
| 10 Sept. | Patchy rain possible | 28° /25° | 2 mm | 6 | |
| 11 Sept. | Sunny | 28° /27° | 0 mm | 7 | |
| 12 Sept. | Sunny | 28° /27° | 0 mm | 7 | |
| 13 Sept. | Sunny | 28° /27° | 0 mm | 7 | |
| 14 Sept. | Overcast | 28° /27° | 0.1 mm | 6 | |
| 15 Sept. | Cloudy | 28° /27° | 0 mm | 6 | |
| 16 Sept. | Moderate rain at times | 27° /24° | 2.2 mm | 6 | |
| 17 Sept. | Partly cloudy | 27° /24° | 0 mm | 7 | |
| 18 Sept. | Partly cloudy | 29° /27° | 0 mm | 7 | |
| 19 Sept. | Moderate or heavy rain shower | 29° /26° | 1.7 mm | 6 | |
| 20 Sept. | Partly cloudy | 30° /27° | 0.1 mm | 8 | |
| 21 Sept. | Cloudy | 29° /27° | 0 mm | 6 | |
| 22 Sept. | Moderate rain at times | 28° /23° | 3.5 mm | 6 | |
| 23 Sept. | Patchy rain possible | 24° /22° | 0.9 mm | 5 | |
| 24 Sept. | Patchy rain possible | 23° /20° | 0.1 mm | 5 | |
| 25 Sept. | Patchy rain possible | 24° /20° | 0.2 mm | 5 | |
| 26 Sept. | Overcast | 25° /22° | 0 mm | 6 | |
| 27 Sept. | Moderate or heavy rain shower | 25° /22° | 40.6 mm | 6 | |
| 28 Sept. | Patchy rain possible | 24° /22° | 2 mm | 5 | |
| 29 Sept. | Overcast | 23° /21° | 0.2 mm | 5 | |
| 30 Sept. | Light drizzle | 23° /22° | 1.2 mm | 5 | |
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Important Notice
Our weather forecast for Shinjuku 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 Shinjuku forecast closer to your planned date for the most up-to-date weather information.
Shinjuku in September - FAQ
What are the expected maximum and minimum temperatures in Shinjuku during September?
During September, expect a variety of temperatures with highs around 27° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Shinjuku during September?
Significant rainfall exceeding 135.6 mm is expected in Shinjuku during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Shinjuku during September?
The average wind speed in Shinjuku during September is 29 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Shinjuku in September?
As you prepare for your trip to Shinjuku 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 Shinjuku, 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
- 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 Shinjuku
Explore the daily rainfall trends and prepare for Shinjukus September weather 💧
UV exposure in Shinjuku during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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