Nagano
August
Weather in Nagano for August 2025
Your guide to Nagano weather in August - trends and predictions
In general, the average temperature in Nagano at the beginning of August is 31.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 29.3 °C by the end of August.
Nagano experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 263.7 mm.
Is August a good time to visit Nagano? check out the best time to travel to Nagano page.
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Temperatures
Rain 🌧️
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2
Dry days
29
Rainy days
0
Snow days
30°/18°
Temperatures
9 km/h
Avg max wind
82 %
Avg humidity
Nagano in August average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  32° | 2  33° | 3  32° | ||||
| 4 30° | 5 31° | 6  32° | 7  31° | 8 31° | 9 30° | 10 30° |
| 11 31° | 12 29° | 13 28° | 14 29° | 15 27° | 16 29° | 17 27° |
| 18 30° | 19 31° | 20 29° | 21 30° | 22 30° | 23 30° | 24 29° |
| 25 29° | 26 30° | 27 30° | 28 28° | 29 29° | 30 29° | 31 30° |
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Temperatures trend during August in Nagano
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Moderate or heavy rain shower | 32° /18° | 3.8 mm | 7 | |
| 2 Aug. | Overcast | 33° /18° | 0.8 mm | 7 | |
| 3 Aug. | Patchy rain possible | 32° /19° | 3.9 mm | 7 | |
| 4 Aug. | Moderate or heavy rain shower | 30° /19° | 23.7 mm | 7 | |
| 5 Aug. | Moderate or heavy rain shower | 31° /19° | 6.9 mm | 7 | |
| 6 Aug. | Sunny | 32° /18° | 4.7 mm | 7 | |
| 7 Aug. | Heavy rain at times | 31° /18° | 6.6 mm | 7 | |
| 8 Aug. | Moderate rain at times | 31° /19° | 3 mm | 7 | |
| 9 Aug. | Patchy rain possible | 30° /19° | 1 mm | 7 | |
| 10 Aug. | Heavy rain at times | 30° /17° | 7.3 mm | 7 | |
| 11 Aug. | Patchy rain possible | 31° /18° | 0.6 mm | 7 | |
| 12 Aug. | Moderate or heavy rain shower | 29° /19° | 3.9 mm | 6 | |
| 13 Aug. | Moderate or heavy rain shower | 28° /19° | 22.6 mm | 6 | |
| 14 Aug. | Moderate or heavy rain shower | 29° /18° | 23 mm | 7 | |
| 15 Aug. | Moderate or heavy rain shower | 27° /18° | 9.5 mm | 6 | |
| 16 Aug. | Moderate rain at times | 29° /18° | 6.2 mm | 7 | |
| 17 Aug. | Moderate or heavy rain shower | 27° /18° | 20.4 mm | 6 | |
| 18 Aug. | Moderate or heavy rain shower | 30° /18° | 8.9 mm | 7 | |
| 19 Aug. | Heavy rain at times | 31° /18° | 4.7 mm | 7 | |
| 20 Aug. | Moderate or heavy rain shower | 29° /17° | 22.3 mm | 7 | |
| 21 Aug. | Moderate or heavy rain shower | 30° /19° | 9.3 mm | 7 | |
| 22 Aug. | Patchy rain possible | 30° /19° | 2.7 mm | 7 | |
| 23 Aug. | Patchy rain possible | 30° /19° | 4.5 mm | 7 | |
| 24 Aug. | Moderate or heavy rain shower | 29° /18° | 12.7 mm | 7 | |
| 25 Aug. | Heavy rain at times | 29° /18° | 9.9 mm | 6 | |
| 26 Aug. | Patchy rain possible | 30° /18° | 7 mm | 7 | |
| 27 Aug. | Patchy rain possible | 30° /18° | 11.9 mm | 7 | |
| 28 Aug. | Patchy rain possible | 28° /16° | 8 mm | 6 | |
| 29 Aug. | Patchy rain possible | 29° /15° | 5.3 mm | 6 | |
| 30 Aug. | Moderate or heavy rain shower | 29° /16° | 7.7 mm | 6 | |
| 31 Aug. | Overcast | 30° /17° | 1 mm | 7 | |
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Important Notice
Our weather forecast for Nagano 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 Nagano forecast closer to your planned date for the most up-to-date weather information.
Nagano in August - FAQ
What are the expected maximum and minimum temperatures in Nagano during August?
Expect warm days with temperatures around 30°, cooling to mild conditions of 18° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Nagano during August?
Significant rainfall exceeding 263.7 mm is expected in Nagano during August, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Nagano during August?
The average wind speed in Nagano during August is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Nagano in August?
As you prepare for your trip to Nagano 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 Nagano, 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 Nagano
Explore the daily rainfall trends and prepare for Naganos August weather 💧
UV exposure in Nagano during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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