🇯🇵 Weather in Koga
Map Overlays:
Hourly Forecast for Koga
18:00
22°
2%
19:00
21°
1%
20:00
20°
2%
21:00
20°
3%
22:00
19°
4%
23:00
19°
4%
00:00
18°
4%
01:00
18°
4%
02:00
18°
5%
03:00
18°
4%
04:00
18°
4%
05:00
18°
5%
06:00
18°
5%
07:00
19°
4%
08:00
20°
6%
09:00
21°
2%
10:00
23°
6%
11:00
24°
3%
12:00
24°
9%
13:00
24°
73%
14:00
24°
73%
15:00
23°
73%
16:00
22°
73%
17:00
22°
73%
14-Day Forecast for Koga
2026-06-06
Overcast
24° /
16°
2026-06-07
Moderate rain
24° /
18°
2026-06-08
Moderate rain
26° /
18°
2026-06-09
Patchy rain nearby
29° /
20°
2026-06-10
Patchy rain nearby
27° /
20°
2026-06-11
Sunny
29° /
20°
2026-06-12
Patchy rain nearby
28° /
20°
Additional Forecasts for Koga
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 131.0 μg/m³
O₃ (Ozone) 90.0 μg/m³
NO₂ (Nitrogen Dioxide) 7.9 μg/m³
SO₂ (Sulphur Dioxide) 4.6 μg/m³
PM2.5 (Fine particles) 11.3 μg/m³
PM10 (Coarse particles) 12.6 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Japan
Weather in Koga — FAQ
Answers refreshed each request based on current conditions in Koga.
What is the weather like right now in Koga?
Right now in Koga, Japan the temperature is 24.3°C (feels like 25.4°C), with partly cloudy. Relative humidity is 54% and wind is 14.4 km/h.
What is today's high and low temperature in Koga?
Today's forecast high in Koga is 24.5°C and the overnight low is 15.8°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Koga today?
The chance of precipitation in Koga today is 5%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Koga differ from nearby cities?
Even short distances can change temperatures noticeably. Koga's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.