Biei
September
Weather in Biei for September 2026
Your guide to Biei weather in September - trends and predictions
In general, the average temperature in Biei at the beginning of September is 22.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.3 °C by the end of September.
Biei in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 106.9 mm.
Is September a good time to visit Biei? check out the best time to travel to Biei page.
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Temperatures
Rain 🌧️
More
13
Dry days
17
Rainy days
0
Snow days
20°/12°
Temperatures
12 km/h
Avg max wind
79 %
Avg humidity
Biei Weather September
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Temperatures trend during September in Biei
See the weather trend as well as the moving average line
September weather in Biei day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 26° /15° | 5.1 mm | 6 | |
| 2 Sept. | Light rain shower | 22° /18° | 9.6 mm | 5 | |
| 3 Sept. | Light rain shower | 20° /15° | 2.8 mm | 5 | |
| 4 Sept. |  Sunny | 23° /12° | 0 mm | 6 | |
| 5 Sept. | Sunny | 24° /13° | 0 mm | 6 | |
| 6 Sept. |  Overcast | 24° /13° | 0 mm | 5 | |
| 7 Sept. |  Light drizzle | 20° /16° | 0.8 mm | 5 | |
| 8 Sept. | Patchy rain possible | 24° /15° | 0.5 mm | 5 | |
| 9 Sept. | Patchy rain possible | 21° /15° | 0.1 mm | 5 | |
| 10 Sept. | Overcast | 23° /15° | 0 mm | 5 | |
| 11 Sept. | Light rain shower | 22° /13° | 1.6 mm | 5 | |
| 12 Sept. | Sunny | 23° /9° | 0 mm | 6 | |
| 13 Sept. | Overcast | 23° /11° | 1 mm | 5 | |
| 14 Sept. | Light rain shower | 18° /12° | 21.7 mm | 4 | |
| 15 Sept. | Sunny | 24° /11° | 0.2 mm | 6 | |
| 16 Sept. | Sunny | 21° /14° | 0.1 mm | 6 | |
| 17 Sept. | Light drizzle | 20° /13° | 1.3 mm | 5 | |
| 18 Sept. | Light rain shower | 17° /11° | 1.4 mm | 4 | |
| 19 Sept. | Patchy rain possible | 17° /9° | 0 mm | 4 | |
| 20 Sept. | Patchy light drizzle | 17° /7° | 18.2 mm | 4 | |
| 21 Sept. | Light rain shower | 13° /8° | 22.2 mm | 3 | |
| 22 Sept. | Patchy light drizzle | 17° /5° | 1.3 mm | 4 | |
| 23 Sept. | Overcast | 18° /9° | 0 mm | 4 | |
| 24 Sept. | Overcast | 19° /8° | 0 mm | 4 | |
| 25 Sept. | Light rain shower | 16° /12° | 12 mm | 4 | |
| 26 Sept. | Light rain shower | 19° /12° | 4.2 mm | 4 | |
| 27 Sept. | Patchy rain possible | 19° /10° | 0.4 mm | 4 | |
| 28 Sept. |  Partly cloudy | 20° /10° | 0 mm | 6 | |
| 29 Sept. | Light rain shower | 16° /11° | 2.4 mm | 4 | |
| 30 Sept. | Sunny | 19° /9° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Biei 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 Biei forecast closer to your planned date for the most up-to-date weather information.
Change Month
Biei weather in September vs August vs October
Compare September weather in Biei 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 | Light rain shower | Light rain shower | Patchy rain possible |
| Temperatures | 24°/16° | 20°/12° | 11°/4° |
| Rainfall | 172 mm | 107 mm | 91 mm |
| Snowfall | 0 cm | 0 cm | 18 cm |
| Wind | 10.3 km/h | 11.6 km/h | 12.8 km/h |
| Humidity | 85% | 79% | 78% |
| Rainy days | 28 days | 17 days | 11 days |
| Snow days | 0 days | 0 days | 8 days |
| Dry days | 3 days | 13 days | 12 days |
Planning a trip to Biei? Discover the best time to visit
Biei in September - FAQ
What are the expected maximum and minimum temperatures in Biei during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Biei during September?
Significant rainfall exceeding 106.9 mm is expected in Biei during September, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Biei during September?
The average wind speed in Biei during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Biei in September?
As you prepare for your trip to Biei 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 Biei, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Biei
Explore the daily rainfall trends and prepare for Bieis September weather 💧
Typically, Biei has 17 rainy days in September with a total of 106.9 mm of rainfall.
UV exposure in Biei during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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