Nagano Shi (Nagano)
September
Weather in Nagano Shi for September 2027
Your guide to Nagano Shi weather in September - trends and predictions
In general, the average temperature in Nagano Shi at the beginning of September is 25.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 23.1 °C by the end of September.
Nagano Shi in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 232.1 mm.
Is September a good time to visit Nagano Shi? check out the best time to travel to Nagano Shi page.
✨ Is September a good time to visit Nagano Shi? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
11
Dry days
19
Rainy days
0
Snow days
25°/14°
Temperatures
8 km/h
Avg max wind
85 %
Avg humidity
Nagano Shi Weather September
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Temperatures trend during September in Nagano Shi
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September weather in Nagano Shi day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 28° /16° | 6 mm | 6 | |
| 2 Sept. |  Moderate rain | 26° /17° | 10.4 mm | 5 | |
| 3 Sept. | Moderate rain | 26° /15° | 12 mm | 5 | |
| 4 Sept. |  Moderate or heavy rain shower | 25° /15° | 9.6 mm | 5 | |
| 5 Sept. | Moderate rain | 26° /16° | 15.9 mm | 6 | |
| 6 Sept. | Moderate or heavy rain shower | 26° /15° | 7 mm | 5 | |
| 7 Sept. | Light rain | 26° /14° | 5.8 mm | 5 | |
| 8 Sept. |  Heavy rain | 23° /16° | 27 mm | 5 | |
| 9 Sept. | Moderate rain | 27° /15° | 14.3 mm | 5 | |
| 10 Sept. | Light rain | 27° /16° | 4.6 mm | 6 | |
| 11 Sept. | Moderate or heavy rain shower | 26° /16° | 7.3 mm | 6 | |
| 12 Sept. |  Patchy rain possible | 27° /16° | 2.3 mm | 6 | |
| 13 Sept. | Light rain | 27° /16° | 3.8 mm | 6 | |
| 14 Sept. | Light rain | 28° /16° | 4.6 mm | 6 | |
| 15 Sept. | Light rain | 26° /17° | 3.5 mm | 5 | |
| 16 Sept. | Light rain | 26° /15° | 5.4 mm | 5 | |
| 17 Sept. | Light rain | 27° /16° | 4 mm | 6 | |
| 18 Sept. | Moderate rain | 27° /15° | 13.4 mm | 6 | |
| 19 Sept. | Light rain | 25° /15° | 3.8 mm | 5 | |
| 20 Sept. | Moderate rain | 24° /14° | 16 mm | 5 | |
| 21 Sept. | Light rain | 22° /14° | 4.7 mm | 5 | |
| 22 Sept. | Moderate rain | 22° /12° | 12.2 mm | 5 | |
| 23 Sept. | Light rain | 22° /11° | 9.2 mm | 5 | |
| 24 Sept. | Light rain | 22° /11° | 4.9 mm | 5 | |
| 25 Sept. |  Partly cloudy | 24° /11° | 0.2 mm | 5 | |
| 26 Sept. | Light rain | 23° /12° | 4.5 mm | 5 | |
| 27 Sept. | Light rain | 23° /12° | 5.3 mm | 5 | |
| 28 Sept. | Light rain | 23° /12° | 9.1 mm | 5 | |
| 29 Sept. | Light rain | 23° /11° | 4.8 mm | 5 | |
| 30 Sept. | Patchy rain possible | 24° /11° | 0.6 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Nagano Shi 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 Nagano Shi forecast closer to your planned date for the most up-to-date weather information.
Change Month
Nagano Shi weather in September vs August vs October
Compare September weather in Nagano Shi with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 29°/18° | 25°/14° | 18°/7° |
| Rainfall | 240 mm | 232 mm | 146 mm |
| Wind | 8.8 km/h | 8.3 km/h | 9.1 km/h |
| Humidity | 83% | 85% | 81% |
| Rainy days | 23 days | 19 days | 14 days |
| Dry days | 8 days | 11 days | 17 days |
Planning a trip to Nagano Shi? Discover the best time to visit
Nagano Shi in September - FAQ
What are the expected maximum and minimum temperatures in Nagano Shi during September?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Nagano Shi during September?
Significant rainfall exceeding 232.1 mm is expected in Nagano Shi during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Nagano Shi during September?
The average wind speed in Nagano Shi during September is 8 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Nagano Shi
Explore the daily rainfall trends and prepare for Nagano Shis September weather 💧
Typically, Nagano Shi has 19 rainy days in September with a total of 232.1 mm of rainfall.
UV exposure in Nagano Shi during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
What to pack to Nagano Shi in September?
Mild & changeable · highs around 25 °C, frequent showers
As you prepare for your trip to Nagano Shi 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 Nagano Shi, during September, is comfortable and enjoyable, regardless of the weather conditions.
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