Shirahama Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Shirahama.
Climate overview of Shirahama
Shirahama, Wakayama, Japan, sees big temperature differences between seasons, with August peaking at 30°C (86°F) and January dropping to 11°C (52°F).
With around 2280 mm (90 in) of annual rainfall, Shirahama has a notably wet climate. However, this rainfall is not evenly distributed, the city has a distinct rainy season from April to October, with warm summers and cold winters. The wettest month is June. August is the sunniest month, averaging 7.6 hours of sunshine per day.
Shirahama Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Shirahama - and find the best time to visit.
Monthly Temperature in Shirahama
Visitors to Shirahama can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 30°C (86°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 11°C (52°F).
At night, temperatures range from around 25°C (77°F) in August to 6°C (43°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Shirahama
Shirahama is known for its substantial rainfall, with annual precipitation reaching 2280 mm (90 in). Shirahama can be quite wet during June, receiving approximately 340 mm (13 in) of precipitation over 19 rainy days.
In contrast, during the driest month (December), you will experience much drier conditions, with 104 mm (4.1 in) of precipitation spread across 12 rainy days. For more details, please visit our Shirahama 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 Shirahama
Shirahama can be enjoyed more throughout the sunniest month of August under a blue sky, with approximately 7.6 hours of sunshine daily. In contrast, the city experiences much darker days in February, with only 4.5 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Shirahama by Month
The relative humidity is high throughout the year in Shirahama.
The city experiences its highest humidity in July, reaching 76%. In March, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Shirahama
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May and November
- Warmest weather: July and August
- Most sunshine: August
- Fewer rainy days: January, February, October, November and December
- Seasonal pattern: A distinct rainy season from April to October, with warm summers and cold winters
Frequently asked questions about the climate in Shirahama
What is the best time to visit Shirahama?
April, May and November typically offer the most optimal weather in Shirahama. In contrast, January, February, June and July tend to have less optimal conditions. Shirahama has a distinct rainy season from April to October, with warm summers and cold winters.
What temperatures can I expect in Shirahama?
Daytime highs range from 11°C (52°F) in January to 30°C (86°F) in August. Nighttime lows range from 6°C (43°F) to 25°C (77°F). Temperatures vary considerably through the year.
How much rain does Shirahama get?
Annual rainfall is around 2280 mm (90 in). June is the wettest month with 340 mm (13 in), while December is the driest with 104 mm (4.1 in).
How sunny is Shirahama?
Shirahama receives around 2,027 hours of sunshine per year. August is the sunniest month with 228 hours, while February is the cloudiest with just 134 hours. Overall, Shirahama enjoys abundant sunshine.
Shirahama 3-Day Forecast
Shirahama on the map
Shirahama is highlighted - select any city to see its climate.
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