Live Weather & Forecast
Weather in Saku
Nagano, Japan · Real-time conditions & 3-day outlook
11°C
Feels like 10°C
51°F / Feels 50°F
Light drizzle
Saku, Nagano
🌙 Nighttime
Updated: 2026-04-16 02:00
Humidity
95%
Wind
6.1 km/h WNW
Wind Gust
7.1 km/h
Pressure
1010 mb
Visibility
2 km
UV Index
0
(Low)
Precipitation
0.18 mm
Cloud Cover
95%
Dew Point
9.8°C
Wind Degree
299°
Air Quality Index
US EPA: Moderate
UK DEFRA: Low (2)
CO
264.9 μg/m³
NO₂
14.4 μg/m³
O₃
95 μg/m³
SO₂
5.8 μg/m³
PM 2.5
18.4 μg/m³
PM 10
23.8 μg/m³
Today's Hourly Forecast
24-hour breakdown for Saku, Nagano
12 AM
11°
Patchy rain nearby
1 AM
11°
Light rain
2 AM
11°
Light drizzle
3 AM
10°
Mist
4 AM
10°
Mist
5 AM
10°
Overcast
6 AM
10°
Partly Cloudy
7 AM
10°
Sunny
8 AM
12°
Sunny
9 AM
13°
Sunny
10 AM
14°
Sunny
11 AM
15°
Sunny
12 PM
16°
Sunny
1 PM
16°
Sunny
2 PM
16°
Sunny
3 PM
16°
Sunny
4 PM
15°
Sunny
5 PM
15°
Sunny
6 PM
11°
Sunny
7 PM
8°
Clear
8 PM
7°
Clear
9 PM
5°
Clear
10 PM
5°
Clear
11 PM
4°
Clear
3-Day Forecast
Daily overview for Saku, Nagano
Today
Patchy rain nearby
16°
/
4°
🌧️ 85% chance of rain
💧 Avg. humidity: 59%
💨 Max wind: 15.1 km/h
🌧️ Total precip: 1.28 mm
☀️ UV Index: 1.9
🌅 Sunrise: 05:12 AM
🌇 Sunset: 06:20 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Overcast
17°
/
2°
🌧️ 0% chance of rain
💧 Avg. humidity: 54%
💨 Max wind: 11.9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2.1
🌅 Sunrise: 05:11 AM
🌇 Sunset: 06:21 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Partly Cloudy
21°
/
4°
🌧️ 0% chance of rain
💧 Avg. humidity: 49%
💨 Max wind: 11.2 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 2.2
🌅 Sunrise: 05:10 AM
🌇 Sunset: 06:22 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Best Time to Visit Saku
Plan your trip to Saku, Japan around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Saku?
Current conditions in Saku: Light drizzle, temperature 11°C, humidity 95%.
What is the best time to visit Saku?
The best time to visit Saku is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Saku?
Saku is located at approximately 36.2° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Saku?
The wettest period in Saku is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Saku?
For visits to Saku during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Saku in 2026?
View the 2026 public holidays for Saku on our Holidays page.
What are the GPS coordinates used for the weather forecast in Saku?
The weather forecast for Saku uses coordinates 36.2488, 138.4768.