UTC Offset
UTC+09:00
Oga, Japan Snapshot 2026
Where is Oga?
Oga, Japan
- Continent
- Asia
- Country
- Japan
- City
- Oga
- Population
- 25.2K
- Coordinates
- 39.87°, 139.85°
Oga is a city in Japan with a population of approximately 25.2K. Average temperatures range from 0°C (33°F) in January to 27°C (81°F) in August. The best time to visit is May, June, July, September.
Time in Oga right now
Open full time & time zone page 20:46 46
Tuesday, June 16, 2026
IANA time zone
Asia/Tokyo
Daylight saving
No DST
Next DST change
—
Live weather in Oga
Daylight in Oga today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 59m
Climate normals for Oga
Long-term monthly averages based on historical data.
January
Wet 
February
Wet March
Poor April
Fair May best
Good June best
Excellent July best
Excellent August
Wet September best
Excellent October
Fair November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 3°C / 0°C | -1°C / -5°C | 21days (109 mm) Wet | 6.1h Fair | 71% Muggy | 2.1 Moderate | Wet | View Details |
| February | 4°C / 1°C | -1°C / -5°C | 19days (98 mm) Wet | 7.1h Good | 70% Muggy | 3.3 Moderate | Wet | View Details |
| March | 7°C / 4°C | 4°C / -1°C | 14days (99 mm) Wet | 8.3h Good | 69% Muggy | 4.3 Moderate | Poor | View Details |
| April | 12°C / 8°C | 9°C / 4°C | 14days (116 mm) Wet | 9h Good | 74% Muggy | 5.3 High | Fair | View Details |
| May best | 17°C / 13°C | 16°C / 11°C | 13days (124 mm) Wet | 9.5h Good | 79% Humid | 5.9 High | Good | View Details |
| June best | 21°C / 17°C | 23°C / 17°C | 12days (145 mm) Wet | 9.8h Good | 83% Humid | 6.6 High | Excellent | View Details |
| July best | 26°C / 22°C | 29°C / 25°C | 14days (174 mm) Wet | 9.5h Good | 85% Humid | 6.8 High | Excellent | View Details |
| August | 27°C / 24°C | 32°C / 27°C | 15days (221 mm) Wet | 9.6h Good | 81% Humid | 7 High | Wet | View Details |
| September best | 24°C / 21°C | 26°C / 21°C | 13days (172 mm) Wet | 8.4h Good | 75% Muggy | 5.4 High | Excellent | View Details |
| October | 18°C / 14°C | 16°C / 12°C | 14days (164 mm) Wet | 7.4h Good | 69% Muggy | 3.9 Moderate | Fair | View Details |
| November | 12°C / 8°C | 9°C / 4°C | 19days (160 mm) Wet | 6.2h Fair | 68% Muggy | 2.6 Moderate | Wet | View Details |
| December | 6°C / 3°C | 2°C / -3°C | 25days (170 mm) Wet | 5.4h Fair | 71% Muggy | 1.8 Low | Wet | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 3°C / 0°C . Feb: 4°C / 1°C . Mar: 7°C / 4°C . Apr: 12°C / 8°C . May: 17°C / 13°C . Jun: 21°C / 17°C . Jul: 26°C / 22°C . Aug: 27°C / 24°C . Sep: 24°C / 21°C . Oct: 18°C / 14°C . Nov: 12°C / 8°C . Dec: 6°C / 3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 109 mm. Feb: 98 mm. Mar: 99 mm. Apr: 116 mm. May: 124 mm. Jun: 145 mm. Jul: 174 mm. Aug: 221 mm. Sep: 172 mm. Oct: 164 mm. Nov: 160 mm. Dec: 170 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 71%. Feb: 70%. Mar: 69%. Apr: 74%. May: 79%. Jun: 83%. Jul: 85%. Aug: 81%. Sep: 75%. Oct: 69%. Nov: 68%. Dec: 71%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 27 km/h . Feb: 27 km/h . Mar: 25 km/h . Apr: 24 km/h . May: 21 km/h . Jun: 19 km/h . Jul: 17 km/h . Aug: 19 km/h . Sep: 19 km/h . Oct: 22 km/h . Nov: 25 km/h . Dec: 29 km/h .
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 11°C . Feb: 9°C . Mar: 9°C . Apr: 11°C . May: 15°C . Jun: 20°C . Jul: 25°C . Aug: 28°C . Sep: 27°C . Oct: 23°C . Nov: 18°C . Dec: 14°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 5. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Oga has a population of approximately 25.2K.
The best months to visit Oga are May, June, July, September, when temperatures are pleasant and rainfall is lower.
Oga receives approximately 1752mm of rainfall annually across 193 rainy days.
Oga is located in Japan, in the Asia region.