Kōyasan
August
Weather in Kōyasan for August 2026
Your guide to Kōyasan weather in August - trends and predictions
In general, the average temperature in Kōyasan at the beginning of August is 31.9 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 30.6 °C by the end of August.
Kōyasan experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 313.1 mm.
Is August a good time to visit Kōyasan? check out the best time to travel to Kōyasan page.
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Temperatures
Rain 🌧️
More
5
Dry days
26
Rainy days
0
Snow days
30°/21°
Temperatures
11 km/h
Avg max wind
79 %
Avg humidity
Kōyasan Weather August
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Temperatures trend during August in Kōyasan
See the weather trend as well as the moving average line
August weather in Kōyasan day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Patchy rain possible | 31° /22° | 1.6 mm | 7 | |
| 2 Aug. |  Partly cloudy | 33° /21° | 0 mm | 8 | |
| 3 Aug. |  Patchy light drizzle | 33° /20° | 1.3 mm | 7 | |
| 4 Aug. |  Sunny | 34° /22° | 0 mm | 8 | |
| 5 Aug. |  Patchy light rain with thunder | 33° /22° | 0.8 mm | 7 | |
| 6 Aug. | Patchy rain possible | 33° /23° | 1.9 mm | 7 | |
| 7 Aug. |  Moderate or heavy rain shower | 26° /20° | 16.5 mm | 6 | |
| 8 Aug. | Patchy rain possible | 30° /19° | 0.9 mm | 7 | |
| 9 Aug. | Light rain shower | 30° /20° | 3.2 mm | 7 | |
| 10 Aug. | Light rain shower | 26° /20° | 6.5 mm | 6 | |
| 11 Aug. | Moderate or heavy rain shower | 24° /20° | 41.3 mm | 5 | |
| 12 Aug. | Light rain shower | 29° /22° | 6.8 mm | 6 | |
| 13 Aug. | Patchy rain possible | 31° /21° | 2.3 mm | 7 | |
| 14 Aug. | Light rain shower | 30° /21° | 7 mm | 7 | |
| 15 Aug. | Patchy rain possible | 32° /21° | 2.4 mm | 7 | |
| 16 Aug. | Light rain shower | 30° /20° | 11.4 mm | 7 | |
| 17 Aug. | Patchy light drizzle | 30° /20° | 4 mm | 7 | |
| 18 Aug. | Patchy light rain with thunder | 31° /20° | 18.9 mm | 7 | |
| 19 Aug. | Moderate or heavy rain shower | 30° /21° | 8.5 mm | 7 | |
| 20 Aug. |  Heavy rain at times | 30° /22° | 22.5 mm | 7 | |
| 21 Aug. |  Overcast | 33° /21° | 1.1 mm | 7 | |
| 22 Aug. | Patchy rain possible | 33° /21° | 0.1 mm | 7 | |
| 23 Aug. | Overcast | 32° /22° | 1.4 mm | 7 | |
| 24 Aug. | Heavy rain at times | 31° /22° | 13.4 mm | 7 | |
| 25 Aug. | Moderate or heavy rain shower | 30° /21° | 14.4 mm | 7 | |
| 26 Aug. | Moderate rain at times | 32° /21° | 1.9 mm | 7 | |
| 27 Aug. | Patchy rain possible | 32° /21° | 3.2 mm | 7 | |
| 28 Aug. | Moderate or heavy rain shower | 31° /21° | 8.1 mm | 7 | |
| 29 Aug. | Moderate or heavy rain shower | 28° /21° | 12.1 mm | 7 | |
| 30 Aug. | Moderate rain at times | 32° /21° | 1.5 mm | 8 | |
| 31 Aug. | Moderate or heavy rain shower | 29° /20° | 42.9 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Kōyasan in August 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 Kōyasan forecast closer to your planned date for the most up-to-date weather information.
Change Month
Kōyasan weather in August vs July vs September
Compare August weather in Kōyasan with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| July | August | September | |
|---|---|---|---|
| Weather | Light rain shower | Patchy rain possible | Patchy rain possible |
| Temperatures | 32°/20° | 30°/21° | 29°/20° |
| Rainfall | 157 mm | 313 mm | 124 mm |
| Wind | 8.8 km/h | 11.4 km/h | 8.8 km/h |
| Humidity | 77% | 79% | 80% |
| Rainy days | 23 days | 26 days | 18 days |
| Dry days | 8 days | 5 days | 12 days |
Planning a trip to Kōyasan? Discover the best time to visit
Kōyasan in August - FAQ
What are the expected maximum and minimum temperatures in Kōyasan during August?
During August, expect a variety of temperatures with highs around 30° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Kōyasan during August?
Significant rainfall exceeding 313.1 mm is expected in Kōyasan during August, occurring over more than 26 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Kōyasan during August?
The average wind speed in Kōyasan during August is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Kōyasan in August?
As you prepare for your trip to Kōyasan in August, 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 August, 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
- Insect Repellent: For destinations with mosquitos or other insects
August rainfall patterns in Kōyasan
Explore the daily rainfall trends and prepare for Kōyasans August weather 💧
UV exposure in Kōyasan during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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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.
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