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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.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
9
Dry days
Average rainy days
21
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/22°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Niigata in September average weather

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Temperatures trend during September in Niigata

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
29° /24° 0.9 mm 7
2 Sept. Light rain shower
Light rain shower
27° /23° 5 mm 6
3 Sept. Patchy rain possible
Patchy rain possible
28° /23° 0.1 mm 7
4 Sept. Light rain shower
Light rain shower
27° /22° 3.8 mm 7
5 Sept. Light rain shower
Light rain shower
29° /23° 3.9 mm 7
6 Sept. Torrential rain shower
Torrential rain shower
27° /23° 33.6 mm 6
7 Sept. Light rain shower
Light rain shower
26° /23° 1.8 mm 6
8 Sept. Moderate rain
Moderate rain
25° /22° 9.9 mm 6
9 Sept. Partly cloudy
Partly cloudy
28° /23° 0.6 mm 7
10 Sept. Light rain shower
Light rain shower
29° /23° 0.7 mm 7
11 Sept. Cloudy
Cloudy
30° /25° 0.1 mm 7
12 Sept. Partly cloudy
Partly cloudy
29° /24° 0.2 mm 7
13 Sept. Partly cloudy
Partly cloudy
28° /24° 1 mm 7
14 Sept. Partly cloudy
Partly cloudy
28° /23° 2 mm 7
15 Sept. Overcast
Overcast
27° /24° 23.2 mm 6
16 Sept. Patchy light drizzle
Patchy light drizzle
27° /23° 1 mm 6
17 Sept. Patchy rain possible
Patchy rain possible
28° /23° 2.6 mm 7
18 Sept. Light rain shower
Light rain shower
28° /24° 5 mm 6
19 Sept. Patchy rain possible
Patchy rain possible
26° /22° 25.8 mm 6
20 Sept. Light rain shower
Light rain shower
26° /22° 15.4 mm 6
21 Sept. Light rain shower
Light rain shower
24° /21° 29.3 mm 6
22 Sept. Light rain shower
Light rain shower
24° /19° 29.8 mm 5
23 Sept. Overcast
Overcast
22° /19° 2.4 mm 5
24 Sept. Partly cloudy
Partly cloudy
23° /17° 0.2 mm 6
25 Sept. Overcast
Overcast
25° /16° 0 mm 7
26 Sept. Overcast
Overcast
25° /20° 0 mm 6
27 Sept. Light rain
Light rain
23° /20° 7.6 mm 5
28 Sept. Light rain shower
Light rain shower
24° /20° 8.4 mm 5
29 Sept. Light rain shower
Light rain shower
23° /20° 1 mm 5
30 Sept. Light rain shower
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

September rainfall patterns in Niigata

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

UV exposure in Niigata during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Niigata?

Get accurate weather forecasts for Niigata, located at latitude 37.886 and longitude 139.006. Stay updated with localized weather information tailored for Niigata.

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