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Monthly climate in Tsu, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Tsu features a humid subtropical climate (Cfa). Temperatures typically range between 5 °C (42 °F) and 28 °C (82 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 2031 mm (80.0 inches) and receives 146 rainy days on the 1 mm (0.04 inches) threshold annually. Tsu enjoys an average of 2988 hours of sunshine throughout the year, and daylight varies from 9 hours 51 minutes to 14 hours 25 minutes per day.

Monthly average temperatures in Tsu, Japan

The warmest months in Tsu are July, August and September, with daily mean temperatures ranging from 24 to 28 °C (76 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 8 °C (42 - 46 °F) throughout the day. On average each year, Tsu experiences 97 days above 25 °C (77.0 °F) and 5 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Tsu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum15°C
(59°F)		19°C
(67°F)		21°C
(71°F)		24°C
(76°F)		29°C
(85°F)		31°C
(88°F)		36°C
(97°F)		35°C
(96°F)		34°C
(93°F)		29°C
(85°F)		23°C
(74°F)		21°C
(70°F)
Mean maximum13°C
(55°F)		16°C
(60°F)		19°C
(67°F)		23°C
(74°F)		27°C
(82°F)		29°C
(85°F)		33°C
(92°F)		35°C
(95°F)		33°C
(91°F)		28°C
(82°F)		22°C
(71°F)		17°C
(63°F)
Average high8°C
(47°F)		9°C
(49°F)		14°C
(57°F)		18°C
(64°F)		23°C
(73°F)		25°C
(78°F)		29°C
(84°F)		31°C
(88°F)		27°C
(81°F)		22°C
(72°F)		17°C
(62°F)		11°C
(52°F)
Daily mean5°C
(42°F)		6°C
(43°F)		10°C
(50°F)		14°C
(57°F)		19°C
(66°F)		22°C
(72°F)		26°C
(79°F)		28°C
(82°F)		24°C
(76°F)		19°C
(66°F)		13°C
(56°F)		8°C
(46°F)
Average low3°C
(37°F)		3°C
(37°F)		6°C
(43°F)		10°C
(50°F)		15°C
(59°F)		19°C
(67°F)		24°C
(75°F)		25°C
(77°F)		22°C
(71°F)		16°C
(61°F)		10°C
(50°F)		5°C
(41°F)
Mean minimum-1°C
(31°F)		-1°C
(31°F)		2°C
(35°F)		4°C
(39°F)		9°C
(48°F)		15°C
(59°F)		21°C
(70°F)		22°C
(72°F)		17°C
(62°F)		11°C
(51°F)		5°C
(41°F)		1°C
(34°F)
Minimum-3°C
(27°F)		-2°C
(29°F)		1°C
(34°F)		2°C
(36°F)		7°C
(45°F)		13°C
(56°F)		20°C
(68°F)		20°C
(68°F)		15°C
(59°F)		9°C
(49°F)		3°C
(38°F)		-1°C
(30°F)

Compare climate in Tsu with other places

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

Monthly average precipitation in Tsu, Japan

Tsu usually has the most precipitation in July, September and October, with an average of 18 rainy days and 295 mm (11.6 inches) of precipitation per month. The driest months in Tsu are January, February and November. On average, 59 mm (2.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tsu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)55 (2.2)60 (2.4)157 (6.2)149 (5.8)177 (7.0)209 (8.2)320 (12.6)212 (8.4)223 (8.8)343 (13.5)62 (2.4)66 (2.6)
Average precipitation days (≥ 1 mm)66111012152217181577

Monthly sunshine hours in Tsu, Japan

The sunniest months in Tsu are April, May and August, when the sun shines an average of 9 hours 21 minutes a day. Least sunny months in Tsu: January, October and December receive an average of 6 hours 53 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tsu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours188232266275287262252297235227236225
Mean daily daylight hours10h 5m10h 54m11h 58m13h 3m13h 58m14h 25m14h 12m13h 24m12h 21m11h 16m10h 20m9h 51m

Solar UV radiation in Tsu, Japan

Tsu experiences the highest level of ultraviolet (UV) radiation in April, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure. January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Tsu UV Index data.

Average daily maximum UV levels by month for Tsu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)468111111121110754