UTC Offset
UTC+09:00
Koga, Japan Snapshot 2026
Where is Koga?
Koga, Japan
- Continent
- Asia
- Country
- Japan
- City
- Koga
- Population
- 139.3K
- Coordinates
- 36.18°, 139.72°
Koga is a city in Japan with a population of approximately 139.3K. Average temperatures range from -1°C (30°F) in January to 31°C (88°F) in August. The best time to visit is April, May, June, October.
Time in Koga right now
Open full time & time zone page 00:26 26
Wednesday, July 1, 2026
IANA time zone
Asia/Tokyo
Daylight saving
No DST
Next DST change
—
Live weather in Koga
Daylight in Koga today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 35m
Climate normals for Koga
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Fair April best
Good May best
Excellent June best
Excellent July
Wet August
Poor September
Wet October best
Wet November
Fair December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 8°C / -1°C | 5°C / -5°C | 5days (44 mm) Good | 7.9h Good | 67% Muggy | 4 Moderate | Poor | View Details |
| February | 10°C / 0°C | 6°C / -4°C | 6days (50 mm) Good | 8.6h Good | 65% Muggy | 5.2 High | Poor | View Details |
| March | 14°C / 4°C | 11°C / 1°C | 12days (126 mm) Wet | 8.3h Good | 70% Muggy | 6 High | Fair | View Details |
| April best | 19°C / 9°C | 17°C / 7°C | 13days (128 mm) Wet | 8.7h Good | 73% Muggy | 7 High | Good | View Details |
| May best | 23°C / 14°C | 23°C / 14°C | 14days (151 mm) Wet | 8.6h Good | 76% Humid | 7.2 Very High | Excellent | View Details |
| June best | 26°C / 18°C | 28°C / 20°C | 16days (176 mm) Wet | 8h Good | 80% Humid | 6.8 High | Excellent | View Details |
| July | 30°C / 23°C | 34°C / 27°C | 17days (207 mm) Wet | 8.2h Good | 83% Humid | 6.6 High | Wet | View Details |
| August | 31°C / 24°C | 36°C / 28°C | 16days (162 mm) Wet | 9.4h Good | 81% Humid | 6.6 High | Poor | View Details |
| September | 27°C / 21°C | 30°C / 23°C | 17days (183 mm) Wet | 7.3h Good | 83% Humid | 5 Moderate | Wet | View Details |
| October best | 21°C / 14°C | 21°C / 13°C | 14days (187 mm) Wet | 6.5h Fair | 79% Humid | 4 Moderate | Wet | View Details |
| November | 16°C / 7°C | 14°C / 5°C | 9days (81 mm) Wet | 7.6h Good | 77% Humid | 3.8 Moderate | Fair | View Details |
| December | 11°C / 1°C | 8°C / -2°C | 6days (42 mm) Good | 7.6h Good | 71% Muggy | 3.5 Moderate | Poor | View Details |
Monthly Temperatures
High Low
Line chart showing monthly temperatures. Jan: 8°C / -1°C . Feb: 10°C / 0°C . Mar: 14°C / 4°C . Apr: 19°C / 9°C . May: 23°C / 14°C . Jun: 26°C / 18°C . Jul: 30°C / 23°C . Aug: 31°C / 24°C . Sep: 27°C / 21°C . Oct: 21°C / 14°C . Nov: 16°C / 7°C . Dec: 11°C / 1°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 44 mm. Feb: 50 mm. Mar: 126 mm. Apr: 128 mm. May: 151 mm. Jun: 176 mm. Jul: 207 mm. Aug: 162 mm. Sep: 183 mm. Oct: 187 mm. Nov: 81 mm. Dec: 42 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 67%. Feb: 65%. Mar: 70%. Apr: 73%. May: 76%. Jun: 80%. Jul: 83%. Aug: 81%. Sep: 83%. Oct: 79%. Nov: 77%. Dec: 71%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 15 km/h . Feb: 17 km/h . Mar: 16 km/h . Apr: 17 km/h . May: 15 km/h . Jun: 14 km/h . Jul: 12 km/h . Aug: 13 km/h . Sep: 13 km/h . Oct: 12 km/h . Nov: 11 km/h . Dec: 13 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 6. Apr: UV 7. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 5. Oct: UV 4. Nov: UV 4. Dec: UV 4.
Frequently Asked Questions
Koga has a population of approximately 139.3K.
The best months to visit Koga are April, May, June, October, when temperatures are pleasant and rainfall is lower.
Koga receives approximately 1537mm of rainfall annually across 145 rainy days.
Koga is located in Japan, in the Asia region.