Ito-gun (Kōyasan)
September
Weather in Ito-gun for September 2026
Your guide to Ito-gun weather in September - trends and predictions
In general, the average temperature in Ito-gun at the beginning of September is 29.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 25.9 °C by the end of September.
Ito-gun in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 124 mm.
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Temperatures
Rain 🌧️
More
12
Dry days
18
Rainy days
0
Snow days
29°/20°
Temperatures
9 km/h
Avg max wind
80 %
Avg humidity
Ito-gun Weather September
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Temperatures trend during September in Ito-gun
See the weather trend as well as the moving average line
September weather in Ito-gun day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Heavy rain at times | 30° /21° | 2.3 mm | 7 | |
| 2 Sept. |  Overcast | 32° /21° | 0.4 mm | 7 | |
| 3 Sept. | Heavy rain at times | 31° /20° | 3 mm | 7 | |
| 4 Sept. | Overcast | 27° /20° | 11.4 mm | 6 | |
| 5 Sept. |  Patchy rain possible | 28° /19° | 9.7 mm | 7 | |
| 6 Sept. |  Cloudy | 30° /19° | 0 mm | 7 | |
| 7 Sept. | Cloudy | 31° /19° | 0 mm | 8 | |
| 8 Sept. | Cloudy | 31° /20° | 0.1 mm | 7 | |
| 9 Sept. | Overcast | 33° /21° | 0.6 mm | 7 | |
| 10 Sept. | Heavy rain at times | 33° /21° | 2.6 mm | 7 | |
| 11 Sept. | Heavy rain at times | 29° /20° | 6.4 mm | 7 | |
| 12 Sept. |  Moderate or heavy rain shower | 30° /20° | 8.5 mm | 7 | |
| 13 Sept. | Moderate rain at times | 31° /20° | 1.4 mm | 7 | |
| 14 Sept. | Moderate or heavy rain shower | 31° /21° | 3.6 mm | 7 | |
| 15 Sept. | Heavy rain at times | 29° /21° | 2.4 mm | 7 | |
| 16 Sept. | Moderate or heavy rain shower | 31° /20° | 10.4 mm | 7 | |
| 17 Sept. | Patchy rain possible | 31° /20° | 2.1 mm | 7 | |
| 18 Sept. | Patchy rain possible | 30° /19° | 2.2 mm | 7 | |
| 19 Sept. |  Partly cloudy | 30° /19° | 0.2 mm | 7 | |
| 20 Sept. |  Sunny | 30° /20° | 2.2 mm | 7 | |
| 21 Sept. | Overcast | 27° /19° | 4.1 mm | 6 | |
| 22 Sept. | Moderate or heavy rain shower | 26° /16° | 20.5 mm | 6 | |
| 23 Sept. | Overcast | 24° /16° | 0 mm | 5 | |
| 24 Sept. | Patchy rain possible | 25° /16° | 0.6 mm | 6 | |
| 25 Sept. | Sunny | 27° /15° | 0.1 mm | 7 | |
| 26 Sept. | Overcast | 28° /17° | 0.6 mm | 6 | |
| 27 Sept. | Patchy rain possible | 27° /17° | 0.2 mm | 7 | |
| 28 Sept. | Heavy rain at times | 26° /17° | 0.9 mm | 6 | |
| 29 Sept. | Moderate rain at times | 23° /16° | 5 mm | 5 | |
| 30 Sept. | Moderate or heavy rain shower | 25° /14° | 12.7 mm | 6 | |
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Important Notice
Our weather forecast for Ito-gun 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 Ito-gun forecast closer to your planned date for the most up-to-date weather information.
Change Month
Ito-gun weather in September vs August vs October
Compare September weather in Ito-gun 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 | 30°/21° | 29°/20° | 23°/14° |
| Rainfall | 313 mm | 124 mm | 230 mm |
| Wind | 11.4 km/h | 8.8 km/h | 9.5 km/h |
| Humidity | 79% | 80% | 83% |
| Rainy days | 26 days | 18 days | 19 days |
| Dry days | 5 days | 12 days | 12 days |
Planning a trip to Ito-gun? Discover the best time to visit
Ito-gun in September - FAQ
What are the expected maximum and minimum temperatures in Ito-gun during September?
During September, expect a variety of temperatures with highs around 29° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ito-gun during September?
Significant rainfall exceeding 124 mm is expected in Ito-gun during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Ito-gun during September?
The average wind speed in Ito-gun during September is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Ito-gun in September?
As you prepare for your trip to Ito-gun 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 Ito-gun, 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 Ito-gun
Explore the daily rainfall trends and prepare for Ito-guns September weather 💧
Typically, Ito-gun has 18 rainy days in September with a total of 124 mm of rainfall.
UV exposure in Ito-gun during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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