Nagano weather
Today's sky, the hour-by-hour rain chance and the 16-day forecast for Nagano, Japan. Like most weather services, we show Nagano at one spot: Nagano, its largest city. At 8:15 AM local time it was mostly clear and 11°C (51°F). Little to no rain in the next 24 hours. Best months for weather: May–Jun, Aug.
Current conditions
- Clouds
- 36%
- Chance of rain
- 49%
- Rain
- 0.0 mm/h
Hourly Forecast
Little to no rain in the next 24 hours
Daily Forecast
Best Time to Visit
Peak season May–Jun, AugOff season Nov–Mar
About Nagano weather
Is it raining in Nagano right now?
No. It’s mostly clear and 11° right now. Little to no rain in the next 24 hours.
What’s the weather like in Nagano this week?
Over the next 7 days, expect highs of 12–22° and lows of 5–11°. Rain is likely on 6 of 7 days (Sunday, Monday, Tuesday, Thursday, Friday, Saturday). The driest day looks like Wednesday.
Has it been raining in Nagano lately?
In the past 7 days, Nagano had 3 rainy days and 48.1 mm of rain in total.
What should I pack for Nagano?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Nagano weather by month
When is the best time to visit Nagano?
Based on weather alone, the best time to visit Nagano is May–Jun, Aug, according to NASA's 2001–2025 climate averages. Nov–Mar tends to be the least pleasant. Average highs run from 0°C (32°F) in January to 27°C (81°F) in August.
What is the rainiest month in Nagano?
July is the wettest month, with about 199 mm (7.8 in) of rain on average. February is the driest, with about 69 mm (2.7 in).
What is the hottest month in Nagano?
August is the warmest, with average highs of 27°C (81°F) and lows of 18°C (64°F). January is the coolest, with highs of 0°C (32°F) and lows of -9°C (16°F).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis for Nagano), forecast and current conditions from Open-Meteo. Page updated . How we rate months
Compare places in Nagano
Weather can differ a lot within Nagano: coasts, hills and mountains each have their own climate.
| Place | Best months | Rainy months | Highs | Rain a year |
|---|---|---|---|---|
| Nagano | May–Jun, Aug | Jul–Oct | 0–27°C | 1,462 mm |
| Matsumoto | May–Jun, Aug–Sep | Jul–Oct | -1–26°C | 1,330 mm |
| Ueda | May–Jun, Aug | Jul–Oct | 0–27°C | 1,462 mm |
| Iida | May–Jun, Aug–Sep | Jun–Oct | -1–24°C | 1,585 mm |
| Saku | May–Jun, Aug | Jul–Oct | 2–27°C | 1,382 mm |
| Azumino | May–Jun, Aug–Sep | Jul–Oct | 0–27°C | 1,462 mm |
| Ina | May–Jun, Aug–Sep | Jul–Oct | -1–26°C | 1,330 mm |
| Shiojiri | May–Jun, Aug–Sep | Jul–Oct | -1–26°C | 1,330 mm |
| Chikuma | May–Jun, Aug | Jul–Oct | 0–27°C | 1,462 mm |
| Chino | May–Jun, Aug–Sep | Jul–Oct | -1–26°C | 1,330 mm |
| Okaya | May–Jun, Aug–Sep | Jul–Oct | -1–26°C | 1,330 mm |
| Suzaka | May–Jun, Aug | Jul–Oct | 0–27°C | 1,462 mm |