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Monthly climate in Sasebo, Nagasaki, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sasebo features a humid subtropical climate (Cfa).Temperatures typically range between 8 °C (46 °F) and 28 °C (83 °F) through the year, but rarely can drop to -2 °C (29 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1854 mm (73.0 inches) and receives 129 rainy days on the 1 mm (0.04 inches) threshold annually.Sasebo enjoys an average of 3048 hours of sunshine throughout the year, and daylight varies from 9 hours 59 minutes to 14 hours 17 minutes per day.

Monthly average temperatures in Sasebo, Nagasaki, Japan §

The warmest months in Sasebo are July, August and September, with daily mean temperatures ranging from 25 to 28 °C (77 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 9 °C (46 - 49 °F) throughout the day. On average each year, Sasebo experiences 109 days above 25 °C (77.0 °F) and 2 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sasebo, Nagasaki, Japan.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 18°C
(66°F)		 21°C
(70°F)		 23°C
(73°F)		 27°C
(82°F)		 28°C
(83°F)		 31°C
(89°F)		 36°C
(96°F)		 37°C
(99°F)		 34°C
(94°F)		 31°C
(88°F)		 25°C
(77°F)		 23°C
(74°F)
Mean maximum 16°C
(61°F)		 18°C
(64°F)		 21°C
(70°F)		 25°C
(77°F)		 28°C
(82°F)		 29°C
(85°F)		 33°C
(92°F)		 35°C
(96°F)		 32°C
(90°F)		 29°C
(84°F)		 23°C
(74°F)		 18°C
(65°F)
Average high 10°C
(51°F)		 11°C
(53°F)		 16°C
(60°F)		 19°C
(67°F)		 24°C
(75°F)		 27°C
(80°F)		 30°C
(86°F)		 32°C
(89°F)		 28°C
(82°F)		 23°C
(75°F)		 18°C
(65°F)		 12°C
(54°F)
Daily mean 8°C
(46°F)		 8°C
(47°F)		 12°C
(54°F)		 16°C
(60°F)		 20°C
(68°F)		 23°C
(74°F)		 27°C
(80°F)		 28°C
(83°F)		 25°C
(77°F)		 20°C
(68°F)		 15°C
(58°F)		 9°C
(49°F)
Average low 5°C
(41°F)		 5°C
(41°F)		 9°C
(48°F)		 12°C
(54°F)		 16°C
(62°F)		 20°C
(69°F)		 25°C
(76°F)		 26°C
(79°F)		 22°C
(72°F)		 17°C
(63°F)		 11°C
(53°F)		 7°C
(44°F)
Mean minimum 1°C
(33°F)		 0°C
(33°F)		 4°C
(39°F)		 7°C
(44°F)		 11°C
(52°F)		 17°C
(63°F)		 21°C
(70°F)		 23°C
(73°F)		 18°C
(64°F)		 12°C
(54°F)		 6°C
(43°F)		 2°C
(36°F)
Minimum -2°C
(29°F)		 -1°C
(30°F)		 2°C
(37°F)		 6°C
(42°F)		 9°C
(48°F)		 16°C
(61°F)		 19°C
(66°F)		 20°C
(68°F)		 17°C
(63°F)		 11°C
(51°F)		 4°C
(40°F)		 1°C
(33°F)

Compare climate in Sasebo with other places

Compare temperature, precipitation, sunshine, UV index in Sasebo, Nagasaki, Japan with other places around the world.

Monthly average precipitation in Sasebo, Nagasaki, Japan §

Sasebo usually has the most precipitation in July, August and September, with an average of 16 rainy days and 290 mm (11.4 inches) of precipitation per month.The driest months in Sasebo are January, November and December. On average, 61 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sasebo, Nagasaki, Japan.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 57 (2.2) 79 (3.1) 132 (5.2) 114 (4.5) 168 (6.6) 200 (7.9) 361 (14.2) 288 (11.3) 222 (8.7) 109 (4.3) 51 (2.0) 74 (2.9)
Average precipitation days (≥ 1 mm) 7 9 10 9 11 12 18 15 15 9 7 7

Monthly sunshine hours in Sasebo, Nagasaki, Japan §

The sunniest months in Sasebo are May, July and August, when the sun shines an average of 9 hours 28 minutes a day.Least sunny months in Sasebo: January, February and December receive an average of 6 hours 31 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sasebo, Nagasaki, Japan.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 168 226 263 284 288 273 286 306 258 258 235 198
Mean daily daylight hours 10h 12m 10h 59m 11h 58m 13h 0m 13h 51m 14h 17m 14h 4m 13h 19m 12h 20m 11h 19m 10h 26m 9h 59m

Solar UV radiation in Sasebo, Nagasaki, Japan §

Sasebo experiences the highest level of ultraviolet (UV) radiation in July, August and September, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure.January, February and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Sasebo UV Index data.

Average daily maximum UV levels by month for Sasebo, Nagasaki, Japan.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 4 6 8 10 11 11 12 12 11 7 6 4