Nagano
May
Weather in Nagano for May 2027
Your guide to Nagano weather in May - trends and predictions
In general, the average temperature in Nagano at the beginning of May is 19.2 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 21.7 °C by the end of May.
The climate of Nagano in May is notably wet, with an average of 14 rainy days, and a total of 187.2 mm of precipitation.
Is May a good time to visit Nagano? check out the best time to travel to Nagano page.
✨ Is May a good time to visit Nagano? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
17
Dry days
14
Rainy days
0
Snow days
21°/8°
Temperatures
10 km/h
Avg max wind
72 %
Avg humidity
Nagano Weather May
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What’s the Weather Like in Nagano This May?
Discover the average temperatures and weather trends across Nagano’s cities this May.
Temperatures trend during May in Nagano
See the weather trend as well as the moving average line
May weather in Nagano day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Moderate or heavy rain shower | 17° /5° | 9.9 mm | 4 | |
| 2 May | Moderate or heavy rain shower | 16° /4° | 7.7 mm | 5 | |
| 3 May |  Patchy rain possible | 18° /4° | 1.9 mm | 5 | |
| 4 May |  Light rain | 22° /4° | 4.6 mm | 6 | |
| 5 May |  Partly cloudy | 22° /6° | 0.8 mm | 6 | |
| 6 May | Light rain | 21° /8° | 5.6 mm | 6 | |
| 7 May |  Moderate rain | 18° /7° | 15 mm | 5 | |
| 8 May | Moderate rain | 17° /5° | 12.1 mm | 5 | |
| 9 May | Light rain | 16° /4° | 3 mm | 5 | |
| 10 May | Light rain | 21° /4° | 3.4 mm | 6 | |
| 11 May | Patchy rain possible | 20° /6° | 0.2 mm | 6 | |
| 12 May | Patchy rain possible | 21° /6° | 0.8 mm | 5 | |
| 13 May |  Heavy rain at times | 20° /7° | 10.1 mm | 5 | |
| 14 May | Moderate or heavy rain shower | 21° /8° | 7.8 mm | 6 | |
| 15 May | Patchy rain possible | 22° /8° | 2 mm | 6 | |
| 16 May | Patchy rain possible | 23° /9° | 1.6 mm | 6 | |
| 17 May | Moderate or heavy rain shower | 22° /10° | 8.2 mm | 6 | |
| 18 May | Patchy rain possible | 26° /9° | 1.4 mm | 7 | |
| 19 May | Light rain | 22° /11° | 3.5 mm | 6 | |
| 20 May | Light rain | 25° /11° | 4 mm | 6 | |
| 21 May | Moderate rain | 22° /11° | 13.3 mm | 5 | |
| 22 May | Light rain | 21° /9° | 5.5 mm | 4 | |
| 23 May | Light rain | 20° /9° | 3.5 mm | 5 | |
| 24 May | Patchy rain possible | 22° /9° | 2.2 mm | 6 | |
| 25 May | Light rain | 22° /8° | 5.5 mm | 6 | |
| 26 May | Patchy rain possible | 22° /8° | 0.3 mm | 5 | |
| 27 May | Moderate rain | 21° /10° | 10.5 mm | 6 | |
| 28 May | Moderate rain | 23° /11° | 17.8 mm | 6 | |
| 29 May | Moderate rain | 21° /9° | 13.6 mm | 5 | |
| 30 May | Light rain | 23° /8° | 4.8 mm | 6 | |
| 31 May | Light rain | 20° /9° | 6.7 mm | 5 | |
| Next | |||||
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.
Change Month
Nagano weather in May vs April vs June
Compare May weather in Nagano with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| April | May | June | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 17°/4° | 21°/8° | 25°/12° |
| Rainfall | 130 mm | 187 mm | 219 mm |
| Wind | 10.4 km/h | 10.4 km/h | 8.8 km/h |
| Humidity | 68% | 72% | 79% |
| Rainy days | 13 days | 14 days | 17 days |
| Dry days | 17 days | 17 days | 13 days |
Planning a trip to Nagano? Discover the best time to visit
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 8°. 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 187.2 mm is expected in Nagano during May, occurring over more than 14 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 10 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Nagano
Explore the daily rainfall trends and prepare for Naganos May weather 💧
Typically, Nagano has 14 rainy days in May with a total of 187.2 mm of rainfall.
UV exposure in Nagano during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
What to pack to Nagano in May?
Mild & changeable · highs around 21 °C, frequent showers
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.
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