Nagasaki
September
Weather in Nagasaki for September 2025
Your guide to Nagasaki weather in September - trends and predictions
In general, the average temperature in Nagasaki at the beginning of September is 28.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.6 °C by the end of September.
The climate of Nagasaki in September is notably wet, with an average of 14 rainy days, and a total of 79.8 mm of precipitation.
Is September a good time to visit Nagasaki? check out the best time to travel to Nagasaki page.
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Temperatures
Rain 🌧️
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16
Dry days
14
Rainy days
0
Snow days
29°/25°
Temperatures
14 km/h
Avg max wind
76 %
Avg humidity
Nagasaki Weather September
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2 28° | 3  28° | 4  28° | 5 28° | 6 29° | 7  29° |
| 8 30° | 9 31° | 10 31° | 11 30° | 12 30° | 13 30° | 14 32° |
| 15 32° | 16 31° | 17 30° | 18 31° | 19 32° | 20 30° | 21 28° |
| 22  28° | 23  26° | 24 27° | 25 26° | 26 28° | 27  29° | 28 28° |
| 29 28° | 30 27° |
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Temperatures trend during September in Nagasaki
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. | Sunny | 29° /23° | 0 mm | 7 | |
| 2 Sept. | Sunny | 28° /24° | 0 mm | 7 | |
| 3 Sept. | Patchy rain possible | 28° /24° | 0.9 mm | 6 | |
| 4 Sept. | Patchy light drizzle | 28° /24° | 1.2 mm | 6 | |
| 5 Sept. | Patchy rain possible | 28° /25° | 0.6 mm | 6 | |
| 6 Sept. | Patchy rain possible | 29° /24° | 0 mm | 6 | |
| 7 Sept. | Partly cloudy | 29° /25° | 0 mm | 7 | |
| 8 Sept. | Patchy rain possible | 30° /25° | 0 mm | 7 | |
| 9 Sept. | Sunny | 31° /25° | 0 mm | 8 | |
| 10 Sept. | Partly cloudy | 31° /26° | 0 mm | 8 | |
| 11 Sept. | Light rain shower | 30° /26° | 2.9 mm | 7 | |
| 12 Sept. | Patchy rain possible | 30° /26° | 0.5 mm | 7 | |
| 13 Sept. | Sunny | 30° /26° | 0 mm | 8 | |
| 14 Sept. | Patchy rain possible | 32° /26° | 0 mm | 7 | |
| 15 Sept. | Light rain shower | 32° /27° | 3.9 mm | 7 | |
| 16 Sept. | Light rain shower | 31° /27° | 3.5 mm | 7 | |
| 17 Sept. | Patchy rain possible | 30° /26° | 0.1 mm | 7 | |
| 18 Sept. | Light rain shower | 31° /26° | 2.1 mm | 7 | |
| 19 Sept. | Patchy rain possible | 32° /26° | 1 mm | 7 | |
| 20 Sept. | Light rain shower | 30° /26° | 6.4 mm | 7 | |
| 21 Sept. | Light rain shower | 28° /26° | 14.4 mm | 6 | |
| 22 Sept. | Moderate or heavy rain shower | 28° /24° | 38.3 mm | 6 | |
| 23 Sept. | Cloudy | 26° /22° | 0.1 mm | 6 | |
| 24 Sept. | Cloudy | 27° /21° | 0 mm | 6 | |
| 25 Sept. | Light rain shower | 26° /23° | 3.1 mm | 6 | |
| 26 Sept. | Sunny | 28° /23° | 0 mm | 7 | |
| 27 Sept. | Overcast | 29° /24° | 0 mm | 6 | |
| 28 Sept. | Patchy rain possible | 28° /24° | 0.3 mm | 6 | |
| 29 Sept. | Sunny | 28° /23° | 0 mm | 7 | |
| 30 Sept. | Patchy rain possible | 27° /23° | 0.6 mm | 6 | |
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Important Notice
Our weather forecast for Nagasaki 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 Nagasaki forecast closer to your planned date for the most up-to-date weather information.
Nagasaki in September - FAQ
What are the expected maximum and minimum temperatures in Nagasaki during September?
During September, expect a variety of temperatures with highs around 29° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Nagasaki during September?
Moderate rainfall is anticipated in Nagasaki during September, with a total of 79.8 mm spread over approximately 14 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Nagasaki during September?
The average wind speed in Nagasaki during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Nagasaki in September?
As you prepare for your trip to Nagasaki 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 Nagasaki, 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 Nagasaki
Explore the daily rainfall trends and prepare for Nagasakis September weather 💧
UV exposure in Nagasaki during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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