Gunma (Kusatsu)
September
Weather in Gunma for September 2027
Your guide to Gunma weather in September - trends and predictions
In general, the average temperature in Gunma at the beginning of September is 24.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.4 °C by the end of September.
Gunma experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 219.5 mm.
Is September a good time to visit Gunma? check out the best time to travel to Gunma page.
✨ Is September a good time to visit Gunma? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
9
Dry days
21
Rainy days
0
Snow days
22°/15°
Temperatures
9 km/h
Avg max wind
88 %
Avg humidity
Gunma Weather September
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What’s the Weather Like in Gunma This September?
Discover the average temperatures and weather trends across Gunma’s cities this September.
Temperatures trend during September in Gunma
See the weather trend as well as the moving average line
September weather in Gunma day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 27° /18° | 1.3 mm | 5 | |
| 2 Sept. |  Light rain | 29° /18° | 4.3 mm | 5 | |
| 3 Sept. |  Moderate rain | 24° /17° | 12.7 mm | 4 | |
| 4 Sept. | Light rain | 22° /16° | 7 mm | 4 | |
| 5 Sept. | Moderate rain | 22° /16° | 19.3 mm | 4 | |
| 6 Sept. | Light rain | 23° /16° | 7.1 mm | 5 | |
| 7 Sept. |  Heavy rain | 25° /16° | 31.4 mm | 4 | |
| 8 Sept. | Moderate rain | 24° /18° | 17.2 mm | 4 | |
| 9 Sept. | Moderate rain | 24° /17° | 15 mm | 4 | |
| 10 Sept. | Light rain | 21° /16° | 6.9 mm | 4 | |
| 11 Sept. | Moderate rain | 22° /16° | 11.9 mm | 4 | |
| 12 Sept. | Light rain | 21° /17° | 6 mm | 4 | |
| 13 Sept. | Light rain | 23° /17° | 5.3 mm | 4 | |
| 14 Sept. | Light rain | 26° /17° | 3.9 mm | 5 | |
| 15 Sept. | Light rain | 24° /18° | 4.4 mm | 4 | |
| 16 Sept. | Moderate rain | 23° /17° | 13.3 mm | 4 | |
| 17 Sept. | Light rain | 25° /17° | 4.2 mm | 4 | |
| 18 Sept. | Light rain | 24° /15° | 3.9 mm | 5 | |
| 19 Sept. | Light rain shower | 20° /14° | 1.9 mm | 3 | |
| 20 Sept. | Light rain | 21° /16° | 5.1 mm | 4 | |
| 21 Sept. | Light rain | 21° /16° | 5.7 mm | 4 | |
| 22 Sept. | Light rain shower | 22° /13° | 1.7 mm | 5 | |
| 23 Sept. | Patchy rain possible | 18° /13° | 0.8 mm | 4 | |
| 24 Sept. |  Fog | 18° /11° | 0.3 mm | 3 | |
| 25 Sept. |  Partly cloudy | 21° /11° | 0 mm | 4 | |
| 26 Sept. | Light rain | 21° /14° | 7.8 mm | 4 | |
| 27 Sept. | Light rain shower | 21° /13° | 1.2 mm | 4 | |
| 28 Sept. | Moderate rain | 20° /14° | 10.1 mm | 3 | |
| 29 Sept. | Light rain | 18° /12° | 9.2 mm | 3 | |
| 30 Sept. | Fog | 17° /11° | 0.7 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Gunma 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 Gunma forecast closer to your planned date for the most up-to-date weather information.
Change Month
Gunma weather in September vs August vs October
Compare September weather in Gunma 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 | 26°/18° | 22°/15° | 16°/9° |
| Rainfall | 220 mm | 220 mm | 109 mm |
| Wind | 8.6 km/h | 8.7 km/h | 9 km/h |
| Humidity | 85% | 88% | 83% |
| Rainy days | 25 days | 21 days | 12 days |
| Dry days | 6 days | 9 days | 19 days |
Planning a trip to Gunma? Discover the best time to visit
Gunma in September - FAQ
What are the expected maximum and minimum temperatures in Gunma during September?
During September, expect a variety of temperatures with highs around 22° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Gunma during September?
Significant rainfall exceeding 219.5 mm is expected in Gunma during September, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Gunma during September?
The average wind speed in Gunma during September is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Gunma
Explore the daily rainfall trends and prepare for Gunmas September weather 💧
Typically, Gunma has 21 rainy days in September with a total of 219.5 mm of rainfall.
UV exposure in Gunma during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
What to pack to Gunma in September?
Mild · highs around 22 °C, frequent showers
As you prepare for your trip to Gunma 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 Gunma, during September, is comfortable and enjoyable, regardless of the weather conditions.
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