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Monthly climate in Tatsugo, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Tatsugo features a humid subtropical climate (Cfa). Temperatures typically range between 16 °C (61 °F) and 28 °C (83 °F) through the year, but rarely can drop to 9 °C (49 °F) or can rise to as high as 31 °C (87 °F). The average annual precipitation amounts to about 2136 mm (84.1 inches) and receives 178 rainy days on the 1 mm (0.04 inches) threshold annually. Tatsugo enjoys an average of 2961 hours of sunshine throughout the year, and daylight varies from 10 hours 21 minutes to 13 hours 54 minutes per day.

Monthly average temperatures in Tatsugo, Japan

The warmest months in Tatsugo are July, August and September, with daily mean temperatures ranging from 27 to 28 °C (82 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 16 to 18 °C (61 - 65 °F) throughout the day. On average each year, Tatsugo experiences 119 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Tatsugo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum22°C
(72°F)		23°C
(73°F)		23°C
(73°F)		25°C
(78°F)		27°C
(80°F)		28°C
(83°F)		31°C
(87°F)		31°C
(87°F)		30°C
(87°F)		28°C
(83°F)		26°C
(78°F)		25°C
(77°F)
Mean maximum21°C
(71°F)		21°C
(70°F)		22°C
(72°F)		24°C
(75°F)		26°C
(78°F)		27°C
(81°F)		30°C
(86°F)		30°C
(86°F)		29°C
(85°F)		28°C
(82°F)		25°C
(77°F)		23°C
(73°F)
Average high17°C
(63°F)		17°C
(63°F)		19°C
(67°F)		21°C
(70°F)		24°C
(75°F)		26°C
(79°F)		28°C
(83°F)		29°C
(84°F)		28°C
(83°F)		26°C
(78°F)		22°C
(73°F)		19°C
(67°F)
Daily mean16°C
(61°F)		16°C
(61°F)		18°C
(65°F)		20°C
(68°F)		23°C
(73°F)		25°C
(78°F)		28°C
(82°F)		28°C
(83°F)		27°C
(82°F)		25°C
(77°F)		21°C
(71°F)		18°C
(65°F)
Average low15°C
(60°F)		15°C
(59°F)		17°C
(63°F)		19°C
(67°F)		22°C
(72°F)		24°C
(76°F)		27°C
(81°F)		28°C
(82°F)		27°C
(80°F)		24°C
(76°F)		20°C
(69°F)		17°C
(63°F)
Mean minimum12°C
(53°F)		11°C
(52°F)		14°C
(57°F)		15°C
(59°F)		19°C
(67°F)		22°C
(71°F)		25°C
(78°F)		26°C
(80°F)		25°C
(77°F)		21°C
(69°F)		17°C
(63°F)		13°C
(56°F)
Minimum10°C
(50°F)		9°C
(49°F)		13°C
(55°F)		13°C
(56°F)		18°C
(65°F)		20°C
(69°F)		24°C
(76°F)		25°C
(77°F)		24°C
(75°F)		20°C
(68°F)		16°C
(62°F)		12°C
(55°F)

Compare climate in Tatsugo with other places

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

Monthly average precipitation in Tatsugo, Japan

Tatsugo usually has the most precipitation in May, June and September, with an average of 18 rainy days and 289 mm (11.4 inches) of precipitation per month. The driest months in Tatsugo are January, February and April. On average, 111 mm (4.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tatsugo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)98 (3.9)114 (4.5)159 (6.3)121 (4.8)213 (8.4)433 (17.0)185 (7.3)193 (7.6)223 (8.8)151 (5.9)121 (4.8)125 (4.9)
Average precipitation days (≥ 1 mm)121415121620131420141216

Monthly sunshine hours in Tatsugo, Japan

The sunniest months in Tatsugo are May, July and August, when the sun shines an average of 9 hours 53 minutes a day. Least sunny months in Tatsugo: January, February and December receive an average of 5 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tatsugo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours144195236261286251309323285266225175
Mean daily daylight hours10h 32m11h 10m11h 59m12h 50m13h 33m13h 54m13h 43m13h 6m12h 18m11h 27m10h 43m10h 21m

Solar UV radiation in Tatsugo, Japan

Tatsugo experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 13 - 13, which corresponds to the Extreme category of sun exposure. January, February and December are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Tatsugo UV Index data.

Average daily maximum UV levels by month for Tatsugo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)6811121213131312986