Live Weather & Forecast
Weather in Koga
Ibaraki, Japan · Real-time conditions & 3-day outlook
22°C
Feels like 24°C
72°F / Feels 76°F
Partly cloudy
Koga, Ibaraki
🌞 Daytime
Updated: 2026-04-15 15:15
Humidity
50%
Wind
9.4 km/h W
Wind Gust
11.3 km/h
Pressure
1009 mb
Visibility
10 km
UV Index
0.4
(Low)
Precipitation
0.46 mm
Cloud Cover
75%
Dew Point
8°C
Wind Degree
263°
Air Quality Index
US EPA: Moderate
UK DEFRA: Moderate (4)
CO
307.9 μg/m³
NO₂
19.5 μg/m³
O₃
40 μg/m³
SO₂
8.1 μg/m³
PM 2.5
36.8 μg/m³
PM 10
41.1 μg/m³
Today's Hourly Forecast
24-hour breakdown for Koga, Ibaraki
12 AM
17°
Cloudy
1 AM
17°
Cloudy
2 AM
17°
Partly Cloudy
3 AM
17°
Patchy rain nearby
4 AM
16°
Partly Cloudy
5 AM
16°
Cloudy
6 AM
16°
Cloudy
7 AM
17°
Partly Cloudy
8 AM
18°
Partly Cloudy
9 AM
20°
Patchy rain nearby
10 AM
21°
Patchy rain nearby
11 AM
22°
Sunny
12 PM
23°
Partly Cloudy
1 PM
24°
Partly Cloudy
2 PM
23°
Cloudy
3 PM
22°
Partly cloudy
4 PM
20°
Patchy light drizzle
5 PM
19°
Patchy light drizzle
6 PM
17°
Light rain
7 PM
17°
Light rain
8 PM
16°
Moderate rain
9 PM
16°
Light rain
10 PM
16°
Light rain
11 PM
16°
Light drizzle
3-Day Forecast
Daily overview for Koga, Ibaraki
Today
Moderate rain
24°
/
16°
🌧️ 95% chance of rain
💧 Avg. humidity: 65%
💨 Max wind: 11.5 km/h
🌧️ Total precip: 10.94 mm
☀️ UV Index: 1.6
🌅 Sunrise: 05:09 AM
🌇 Sunset: 06:14 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Patchy rain nearby
24°
/
14°
🌧️ 93% chance of rain
💧 Avg. humidity: 55%
💨 Max wind: 29.9 km/h
🌧️ Total precip: 0.43 mm
☀️ UV Index: 1.5
🌅 Sunrise: 05:07 AM
🌇 Sunset: 06:15 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Partly Cloudy
21°
/
11°
🌧️ 0% chance of rain
💧 Avg. humidity: 41%
💨 Max wind: 15.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2
🌅 Sunrise: 05:06 AM
🌇 Sunset: 06:16 PM
🌙 New Moon
🌑 Moon: 0% lit
Best Time to Visit Koga
Plan your trip to Koga, 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 Koga?
Current conditions in Koga: Partly cloudy, temperature 22°C, humidity 50%.
What is the best time to visit Koga?
The best time to visit Koga is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Koga?
Koga is located at approximately 36.2° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Koga?
The wettest period in Koga is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Koga?
For visits to Koga during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Koga in 2026?
View the 2026 public holidays for Koga on our Holidays page.
What are the GPS coordinates used for the weather forecast in Koga?
The weather forecast for Koga uses coordinates 36.178, 139.7554.