Live Weather & Forecast
Weather in Kosei
Shiga, Japan · Real-time conditions & 3-day outlook
12°C
Feels like 12°C
54°F / Feels 53°F
Partly cloudy
Kosei, Shiga
🌞 Daytime
Updated: 2026-04-15 17:15
Humidity
28%
Wind
6.8 km/h NNE
Wind Gust
8.5 km/h
Pressure
1015 mb
Visibility
10 km
UV Index
0.1
(Low)
Precipitation
0 mm
Cloud Cover
50%
Dew Point
-1.6°C
Wind Degree
15°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
156.9 μg/m³
NO₂
3.1 μg/m³
O₃
88 μg/m³
SO₂
1.7 μg/m³
PM 2.5
10 μg/m³
PM 10
14 μg/m³
Today's Hourly Forecast
24-hour breakdown for Kosei, Shiga
12 AM
2°
Clear
1 AM
2°
Clear
2 AM
1°
Clear
3 AM
1°
Clear
4 AM
1°
Clear
5 AM
0°
Partly Cloudy
6 AM
3°
Sunny
7 AM
5°
Overcast
8 AM
7°
Partly Cloudy
9 AM
9°
Partly Cloudy
10 AM
11°
Partly Cloudy
11 AM
12°
Partly Cloudy
12 PM
13°
Partly Cloudy
1 PM
13°
Cloudy
2 PM
13°
Overcast
3 PM
12°
Overcast
4 PM
12°
Overcast
5 PM
12°
Partly cloudy
6 PM
10°
Overcast
7 PM
9°
Overcast
8 PM
8°
Overcast
9 PM
7°
Overcast
10 PM
6°
Overcast
11 PM
6°
Overcast
3-Day Forecast
Daily overview for Kosei, Shiga
Today
Partly Cloudy
13°
/
0°
🌧️ 0% chance of rain
💧 Avg. humidity: 50%
💨 Max wind: 7.2 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 1.2
🌅 Sunrise: 04:48 AM
🌇 Sunset: 06:13 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Sunny
14°
/
2°
🌧️ 0% chance of rain
💧 Avg. humidity: 45%
💨 Max wind: 9.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 04:47 AM
🌇 Sunset: 06:15 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Partly Cloudy
15°
/
4°
🌧️ 0% chance of rain
💧 Avg. humidity: 54%
💨 Max wind: 12.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.2
🌅 Sunrise: 04:45 AM
🌇 Sunset: 06:16 PM
🌙 New Moon
🌑 Moon: 0% lit
Best Time to Visit Kosei
Plan your trip to Kosei, 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 Kosei?
Current conditions in Kosei: Partly cloudy, temperature 12°C, humidity 28%.
What is the best time to visit Kosei?
The best time to visit Kosei is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Kosei?
Kosei is located at approximately 43.9° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Kosei?
The wettest period in Kosei is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Kosei?
For visits to Kosei during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Kosei in 2026?
View the 2026 public holidays for Kosei on our Holidays page.
What are the GPS coordinates used for the weather forecast in Kosei?
The weather forecast for Kosei uses coordinates 43.921, 142.57.