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Weather in Nagano for May 2025

Your guide to Nagano weather in May - trends and predictions
  • In general, the average temperature in Nagano at the beginning of May is 20.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 19.9 °C by the end of May.

  • Expect significant rainfall in Nagano during May, with an average of 17 rainy days.

  • Is May a good time to visit Nagano? check out the best time to travel to Nagano page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
14
Dry days
Average rainy days
17
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/5°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Nagano in May average weather

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Temperatures trend during May in Nagano

See the weather trend as well as the moving average line
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May weather day by day

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Date Weather Temperatures Rain UV More
1 May Light rain
Light rain
13° /4° 10.2 mm 3
2 May Partly cloudy
Partly cloudy
18° /1° 2.3 mm 5
3 May Sunny
Sunny
22° /2° 0 mm 6
4 May Sunny
Sunny
26° /4° 0 mm 7
5 May Partly cloudy
Partly cloudy
27° /7° 0 mm 7
6 May Patchy rain possible
Patchy rain possible
19° /10° 0.2 mm 4
7 May Light rain
Light rain
18° /11° 5.8 mm 4
8 May Light rain
Light rain
12° /5° 5.3 mm 3
9 May Patchy rain possible
Patchy rain possible
12° /0° 0.7 mm 3
10 May Sunny
Sunny
23° /0° 0 mm 6
11 May Sunny
Sunny
27° /4° 0 mm 7
12 May Patchy rain possible
Patchy rain possible
24° /6° 0.9 mm 5
13 May Moderate rain
Moderate rain
16° /3° 36.2 mm 4
14 May Partly cloudy
Partly cloudy
22° /0° 0 mm 6
15 May Patchy rain possible
Patchy rain possible
24° /5° 0.6 mm 5
16 May Patchy rain possible
Patchy rain possible
26° /8° 1.3 mm 6
17 May Patchy rain possible
Patchy rain possible
21° /5° 0.1 mm 5
18 May Sunny
Sunny
26° /4° 0 mm 7
19 May Light drizzle
Light drizzle
21° /7° 2.6 mm 5
20 May Light rain shower
Light rain shower
22° /8° 9.3 mm 5
21 May Patchy rain possible
Patchy rain possible
16° /4° 0.1 mm 4
22 May Patchy rain possible
Patchy rain possible
24° /5° 0.1 mm 5
23 May Overcast
Overcast
26° /7° 0 mm 6
24 May Patchy rain possible
Patchy rain possible
26° /7° 0.5 mm 6
25 May Patchy rain possible
Patchy rain possible
18° /3° 0.4 mm 4
26 May Partly cloudy
Partly cloudy
25° /3° 0 mm 7
27 May Patchy light drizzle
Patchy light drizzle
22° /10° 1.2 mm 5
28 May Heavy rain
Heavy rain
14° /11° 93.8 mm 3
29 May Fog
Fog
16° /6° 2.3 mm 4
30 May Sunny
Sunny
26° /6° 0 mm 7
31 May Light rain shower
Light rain shower
18° /8° 14.2 mm 4
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Important Notice
Our weather forecast for Nagano in May 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 May - FAQ

What are the expected maximum and minimum temperatures in Nagano during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 5°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Nagano during May?
Significant rainfall exceeding 188.3 mm is expected in Nagano during May, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Nagano during May?
The average wind speed in Nagano during May is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Nagano in May?

As you prepare for your trip to Nagano in May, 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 May, 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
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • 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

May rainfall patterns in Nagano

Explore the daily rainfall trends and prepare for Naganos May weather 💧

UV exposure in Nagano during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Get accurate weather forecasts for Nagano, located at latitude 36.65 and longitude 138.183. Stay updated with localized weather information tailored for Nagano.

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