Oga Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Oga.
Climate overview of Oga
Oga, Akita, Japan, sees big temperature differences between seasons, with August peaking at 28°C (82°F) and January dropping to 5°C (41°F).
Rain/snowfall is high, totalling around 1873 mm (74 in) per year. July is the wettest month and April the driest. The city also experiences a distinct rainy season from July to September, with warm summers and cold winters. The most sunshine falls in August, with an average of 6.3 hours of daily sunshine.
Oga Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Oga - and find the best time to visit.
Monthly Temperature in Oga
Visitors to Oga can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in August, the warmest time of the year, to a chilly 5°C (41°F) during cooler months like January.
At night, you can expect temperatures ranging from 23°C (73°F) in August to around 0°C (32°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Oga
Oga is known for its substantial rain/snowfall, with annual precipitation reaching 1873 mm (74 in). While rainfall varies throughout the year, each season offers its own charm. July brings wetter days averaging 197 mm (7.8 in) of precipitation, spread over 18 rainy days.
In contrast, the driest month April experiences a drier climate, with about 108 mm (4.3 in) of rainfall spread across 18 rainy days. For more details, please visit our Oga Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Oga
Seasonal changes in sunshine hours are quite dramatic in Oga. While August receives considerable daily sunshine with up to 6.3 hours, January marks the darkest time of the year, where sunshine is scarce with only 1.4 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Oga by Month
The relative humidity is high throughout the year in Oga.
The city experiences its highest humidity in July, reaching 80%. In March, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Oga
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June
- Warmest weather: August
- Most sunshine: May and August
- Seasonal pattern: A distinct rainy season from July to September, with warm summers and cold winters
Frequently asked questions about the climate in Oga
What is the best time to visit Oga?
June typically offers the most optimal weather in Oga. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Oga has a distinct rainy season from July to September, with warm summers and cold winters.
What temperatures can I expect in Oga?
Daytime highs range from 5°C (41°F) in January to 28°C (82°F) in August. Nighttime lows range from 0°C (32°F) to 23°C (73°F). Temperatures vary considerably through the year.
How much rain does Oga get?
Annual rainfall is around 1873 mm (74 in). July is the wettest month with 197 mm (7.8 in), while April is the driest with 108 mm (4.3 in).
How sunny is Oga?
Oga receives around 1,543 hours of sunshine per year. August is the sunniest month with 188 hours, while January is the cloudiest with just 41 hours.
Oga 3-Day Forecast
Oga 3-Day Forecast
Oga on the map
Oga is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Osaka
32°C (90°F) Tokyo30°C (86°F) Naha
30°C (86°F) Kyoto31°C (88°F) Hakone28°C (82°F) Hakuba26°C (79°F) Sapporo24°C (75°F) Niseko24°C (75°F) 
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