Weather in Kōyasan for October 2026
In general, the average temperature in Kōyasan at the beginning of October is 24.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.7 °C by the end of October.
Kōyasan experiences heavy rainfall in October, with over 20 rainy days and an average total precipitation 170.4 mm.
Is October a good time to visit Kōyasan? check out the best time to travel to Kōyasan page.
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Kōyasan Weather October
Temperatures trend during October in Kōyasan
October weather in Kōyasan day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Oct. |  Sunny | 26° /15° | 0 mm | 7 | |
| 2 Oct. |  Overcast | 26° /15° | 0.2 mm | 7 | |
| 3 Oct. |  Moderate or heavy rain shower | 22° /16° | 13 mm | 5 | |
| 4 Oct. | Moderate or heavy rain shower | 21° /16° | 24.4 mm | 5 | |
| 5 Oct. |  Patchy rain possible | 25° /16° | 5.4 mm | 6 | |
| 6 Oct. | Patchy rain possible | 25° /16° | 0.4 mm | 6 | |
| 7 Oct. | Moderate or heavy rain shower | 27° /16° | 7.2 mm | 6 | |
| 8 Oct. | Moderate or heavy rain shower | 24° /16° | 8.6 mm | 6 | |
| 9 Oct. | Patchy rain possible | 23° /13° | 6.4 mm | 5 | |
| 10 Oct. | Overcast | 23° /12° | 0 mm | 5 | |
| 11 Oct. |  Partly cloudy | 24° /14° | 0.1 mm | 6 | |
| 12 Oct. | Sunny | 24° /15° | 8.2 mm | 6 | |
| 13 Oct. |  Cloudy | 23° /14° | 0.6 mm | 5 | |
| 14 Oct. | Cloudy | 26° /13° | 3.8 mm | 6 | |
| 15 Oct. | Patchy rain possible | 25° /15° | 7.6 mm | 6 | |
| 16 Oct. |  Heavy rain at times | 25° /16° | 5 mm | 6 | |
| 17 Oct. | Overcast | 25° /15° | 0.2 mm | 6 | |
| 18 Oct. | Moderate or heavy rain shower | 26° /15° | 6.5 mm | 6 | |
| 19 Oct. | Moderate or heavy rain shower | 23° /14° | 16.7 mm | 6 | |
| 20 Oct. | Overcast | 19° /11° | 2.5 mm | 5 | |
| 21 Oct. | Overcast | 18° /10° | 1.6 mm | 4 | |
| 22 Oct. | Patchy rain possible | 18° /10° | 1.9 mm | 4 | |
| 23 Oct. | Moderate or heavy rain shower | 22° /12° | 9.9 mm | 5 | |
| 24 Oct. | Patchy rain possible | 19° /11° | 1.2 mm | 5 | |
| 25 Oct. | Overcast | 21° /12° | 1.9 mm | 5 | |
| 26 Oct. | Patchy rain possible | 21° /13° | 10.7 mm | 5 | |
| 27 Oct. | Patchy rain possible | 20° /10° | 0.4 mm | 5 | |
| 28 Oct. | Moderate rain at times | 16° /9° | 13.3 mm | 4 | |
| 29 Oct. | Moderate or heavy rain shower | 16° /8° | 10.9 mm | 5 | |
| 30 Oct. | Patchy rain possible | 17° /7° | 1.9 mm | 4 | |
| 31 Oct. | Overcast | 20° /8° | 0 mm | 5 | |
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Kōyasan weather in October vs September vs November
| September | October | November | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 29°/19° | 22°/13° | 15°/6° |
| Rainfall | 114 mm | 170 mm | 74 mm |
| Wind | 9.3 km/h | 9.2 km/h | 12.9 km/h |
| Humidity | 79% | 81% | 76% |
| Rainy days | 19 days | 22 days | 10 days |
| Dry days | 11 days | 9 days | 20 days |
Planning a trip to Kōyasan? Discover the best time to visit
Kōyasan in October - FAQ
What are the expected maximum and minimum temperatures in Kōyasan during October?
How much rainfall should be expected in Kōyasan during October?
What are the typical wind conditions in Kōyasan during October?
October rainfall patterns in Kōyasan
UV exposure in Kōyasan during October
What to pack to Kōyasan in October?
Mild & changeable · highs around 22 °C, frequent showers
As you prepare for your trip to Kōyasan in October, 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 Kōyasan, during October, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
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Where is Kōyasan?Get accurate weather forecasts for Kōyasan, located at latitude 34.217 and longitude 135.583. Stay updated with localized weather information tailored for Kōyasan.