Niigata
September
Weather in Niigata for September 2025
Your guide to Niigata weather in September - trends and predictions
In general, the average temperature in Niigata at the beginning of September is 27.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.7 °C by the end of September.
Niigata experiences an exceptionally high level of rainfall in September, with more than 20 rainy days on average.
Is September a good time to visit Niigata? check out the best time to travel to Niigata page.
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9
Dry days
21
Rainy days
0
Snow days
26°/22°
Temperatures
19 km/h
Avg max wind
76 %
Avg humidity
Niigata in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2 27° | 3 28° | 4 27° | 5 29° | 6  27° | 7 26° |
| 8  25° | 9  28° | 10 29° | 11  30° | 12 29° | 13 28° | 14 28° |
| 15  27° | 16  27° | 17 28° | 18 28° | 19 26° | 20 26° | 21 24° |
| 22 24° | 23 22° | 24 23° | 25 25° | 26 25° | 27 23° | 28 24° |
| 29 23° | 30 23° |
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Temperatures trend during September in Niigata
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. | Patchy rain possible | 29° /24° | 0.9 mm | 7 | |
| 2 Sept. | Light rain shower | 27° /23° | 5 mm | 6 | |
| 3 Sept. | Patchy rain possible | 28° /23° | 0.1 mm | 7 | |
| 4 Sept. | Light rain shower | 27° /22° | 3.8 mm | 7 | |
| 5 Sept. | Light rain shower | 29° /23° | 3.9 mm | 7 | |
| 6 Sept. | Torrential rain shower | 27° /23° | 33.6 mm | 6 | |
| 7 Sept. | Light rain shower | 26° /23° | 1.8 mm | 6 | |
| 8 Sept. | Moderate rain | 25° /22° | 9.9 mm | 6 | |
| 9 Sept. | Partly cloudy | 28° /23° | 0.6 mm | 7 | |
| 10 Sept. | Light rain shower | 29° /23° | 0.7 mm | 7 | |
| 11 Sept. | Cloudy | 30° /25° | 0.1 mm | 7 | |
| 12 Sept. | Partly cloudy | 29° /24° | 0.2 mm | 7 | |
| 13 Sept. | Partly cloudy | 28° /24° | 1 mm | 7 | |
| 14 Sept. | Partly cloudy | 28° /23° | 2 mm | 7 | |
| 15 Sept. | Overcast | 27° /24° | 23.2 mm | 6 | |
| 16 Sept. | Patchy light drizzle | 27° /23° | 1 mm | 6 | |
| 17 Sept. | Patchy rain possible | 28° /23° | 2.6 mm | 7 | |
| 18 Sept. | Light rain shower | 28° /24° | 5 mm | 6 | |
| 19 Sept. | Patchy rain possible | 26° /22° | 25.8 mm | 6 | |
| 20 Sept. | Light rain shower | 26° /22° | 15.4 mm | 6 | |
| 21 Sept. | Light rain shower | 24° /21° | 29.3 mm | 6 | |
| 22 Sept. | Light rain shower | 24° /19° | 29.8 mm | 5 | |
| 23 Sept. | Overcast | 22° /19° | 2.4 mm | 5 | |
| 24 Sept. | Partly cloudy | 23° /17° | 0.2 mm | 6 | |
| 25 Sept. | Overcast | 25° /16° | 0 mm | 7 | |
| 26 Sept. | Overcast | 25° /20° | 0 mm | 6 | |
| 27 Sept. | Light rain | 23° /20° | 7.6 mm | 5 | |
| 28 Sept. | Light rain shower | 24° /20° | 8.4 mm | 5 | |
| 29 Sept. | Light rain shower | 23° /20° | 1 mm | 5 | |
| 30 Sept. | Light rain shower | 23° /18° | 2.5 mm | 5 | |
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Important Notice
Our weather forecast for Niigata 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 Niigata forecast closer to your planned date for the most up-to-date weather information.
Niigata in September - FAQ
What are the expected maximum and minimum temperatures in Niigata during September?
During September, expect a variety of temperatures with highs around 26° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in Niigata during September?
Significant rainfall exceeding 194.4 mm is expected in Niigata during September, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Niigata during September?
The average wind speed in Niigata during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Niigata in September?
As you prepare for your trip to Niigata 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 Niigata, 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
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