Sasebo Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sasebo.
Climate overview of Sasebo
Sasebo, Nagasaki, Japan, sees big temperature differences between seasons, with August peaking at 31°C (88°F) and January dropping to 11°C (52°F).
The city has a wet climate, receiving around 1920 mm (76 in) of rainfall per year. Despite the high annual total, it has a distinct rainy season from June to September. June is the wettest month. The sunniest month is August, with 7.0 hours of sunshine per day on average.
Sasebo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sasebo — and find the best time to visit.
Monthly Temperature in Sasebo
Visitors to Sasebo can expect significant temperature changes throughout the year. On average, daytime temperatures range from a very warm 31°C (88°F) in August to a chilly 11°C (52°F) in January.
Nighttime temperatures range from 26°C (79°F) in August to 5°C (41°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sasebo
Sasebo is known for its substantial rainfall, with annual precipitation reaching 1920 mm (76 in). The seasons in Sasebo bring significant changes in precipitation. The wettest month, June, receives heavy rainfall, with an average of 351 mm (14 in) of precipitation. This rainfall is distributed across 18 rainy days.
In contrast, the driest month, January, experiences much less rainfall, totaling 73 mm (2.9 in) over 19 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Sasebo 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 Sasebo
In Sasebo, summer days are longer and more sunny, with daily sunshine hours peaking at 7.0 hours in August. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 3.5 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Sasebo by Month
The relative humidity is high throughout the year in Sasebo.
The city experiences its highest humidity in June, reaching 80%. In February, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Sasebo
The weather does bring rainfall during this period, between 96 mm (3.8 in) and 160 mm (6.3 in).
Plan accordingly for June, July, August and September, when conditions bring the heaviest precipitation. Looking for inspiration on where to travel this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
Frequently asked questions about the climate in Sasebo
What is the best time to visit Sasebo?
May, October and November typically offer the most optimal weather in Sasebo. In contrast, June, July and August tend to have less optimal conditions. Sasebo has a distinct rainy season from June to September.
What temperatures can I expect in Sasebo?
Daytime highs range from 11°C (52°F) in January to 31°C (88°F) in August. Nighttime lows range from 5°C (41°F) to 26°C (79°F). Temperatures vary considerably through the year.
How much rain does Sasebo get?
Annual rainfall is around 1920 mm (76 in). June is the wettest month with 351 mm (14 in), while January is the driest with 73 mm (2.9 in).
How sunny is Sasebo?
Sasebo receives around 1,876 hours of sunshine per year. August is the sunniest month with 209 hours, while January is the cloudiest with just 104 hours.
Sasebo 3-Day Forecast
Sasebo 3-Day Forecast
Sasebo on the map
Sasebo 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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