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Monthly climate in Hagi, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Hagi features a humid subtropical climate (Cfa). Temperatures typically range between 6 °C (43 °F) and 28 °C (82 °F) through the year, but rarely can drop to -4 °C (26 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 1799 mm (70.8 inches) and receives 149 rainy days on the 1 mm (0.04 inches) threshold annually. Hagi enjoys an average of 3078 hours of sunshine throughout the year, and daylight varies from 9 hours 53 minutes to 14 hours 24 minutes per day.

Monthly average temperatures in Hagi, Japan

The warmest months in Hagi are July, August and September, with daily mean temperatures ranging from 24 to 28 °C (75 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 8 °C (43 - 47 °F) throughout the day. On average each year, Hagi experiences 95 days above 25 °C (77.0 °F) and 4 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hagi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum16°C
(61°F)		20°C
(69°F)		20°C
(69°F)		25°C
(78°F)		29°C
(85°F)		30°C
(86°F)		36°C
(96°F)		36°C
(97°F)		34°C
(94°F)		30°C
(86°F)		25°C
(78°F)		21°C
(70°F)
Mean maximum14°C
(57°F)		16°C
(61°F)		19°C
(67°F)		23°C
(74°F)		27°C
(82°F)		28°C
(83°F)		33°C
(92°F)		35°C
(95°F)		32°C
(89°F)		28°C
(82°F)		22°C
(72°F)		17°C
(63°F)
Average high9°C
(48°F)		10°C
(50°F)		14°C
(57°F)		18°C
(64°F)		22°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
(63°F)		11°C
(52°F)
Daily mean6°C
(43°F)		7°C
(44°F)		11°C
(51°F)		14°C
(58°F)		19°C
(66°F)		22°C
(72°F)		26°C
(79°F)		28°C
(82°F)		24°C
(75°F)		19°C
(66°F)		13°C
(56°F)		8°C
(47°F)
Average low4°C
(39°F)		4°C
(39°F)		7°C
(45°F)		11°C
(52°F)		15°C
(60°F)		19°C
(66°F)		24°C
(75°F)		25°C
(78°F)		21°C
(70°F)		16°C
(61°F)		10°C
(50°F)		5°C
(42°F)
Mean minimum-0°C
(32°F)		-1°C
(31°F)		2°C
(37°F)		5°C
(40°F)		10°C
(50°F)		15°C
(59°F)		20°C
(69°F)		21°C
(71°F)		16°C
(62°F)		10°C
(51°F)		4°C
(40°F)		1°C
(34°F)
Minimum-4°C
(26°F)		-2°C
(28°F)		2°C
(35°F)		3°C
(38°F)		8°C
(47°F)		14°C
(57°F)		18°C
(65°F)		19°C
(67°F)		15°C
(60°F)		9°C
(49°F)		2°C
(36°F)		-0°C
(32°F)

Compare climate in Hagi with other places

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

Monthly average precipitation in Hagi, Japan

Hagi usually has the most precipitation in July, August and September, with an average of 16 rainy days and 267 mm (10.5 inches) of precipitation per month. The driest months in Hagi are January, November and December. On average, 72 mm (2.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hagi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)78 (3.1)89 (3.5)144 (5.7)115 (4.5)117 (4.6)187 (7.4)313 (12.3)254 (10.0)235 (9.3)129 (5.1)51 (2.0)88 (3.5)
Average precipitation days (≥ 1 mm)12121311101219151411713

Monthly sunshine hours in Hagi, Japan

The sunniest months in Hagi are May, June and August, when the sun shines an average of 9 hours 42 minutes a day. Least sunny months in Hagi: January, February and December receive an average of 6 hours 44 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hagi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours173229263279300290279303256256233211
Mean daily daylight hours10h 7m10h 55m11h 58m13h 2m13h 56m14h 24m14h 10m13h 23m12h 21m11h 17m10h 21m9h 53m

Solar UV radiation in Hagi, Japan

Hagi 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, February 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 Hagi UV Index data.

Average daily maximum UV levels by month for Hagi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)458111111121210763