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Monthly climate in Kisarazu, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Kisarazu features a humid subtropical climate (Cfa). Temperatures typically range between 6 °C (43 °F) and 27 °C (81 °F) through the year, but rarely can drop to -2 °C (28 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 1838 mm (72.4 inches) and receives 146 rainy days on the 1 mm (0.04 inches) threshold annually. Kisarazu enjoys an average of 2893 hours of sunshine throughout the year, and daylight varies from 9 hours 46 minutes to 14 hours 30 minutes per day.

Monthly average temperatures in Kisarazu, Japan

The warmest months in Kisarazu are July, August and September, with daily mean temperatures ranging from 24 to 27 °C (75 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 9 °C (43 - 48 °F) throughout the day. On average each year, Kisarazu experiences 71 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Kisarazu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum16°C
(61°F)		16°C
(62°F)		20°C
(68°F)		24°C
(76°F)		27°C
(81°F)		31°C
(88°F)		36°C
(97°F)		33°C
(92°F)		32°C
(89°F)		28°C
(83°F)		21°C
(71°F)		20°C
(68°F)
Mean maximum14°C
(57°F)		15°C
(58°F)		18°C
(65°F)		22°C
(71°F)		25°C
(78°F)		27°C
(82°F)		32°C
(89°F)		33°C
(91°F)		30°C
(86°F)		26°C
(80°F)		20°C
(69°F)		17°C
(63°F)
Average high8°C
(48°F)		9°C
(49°F)		13°C
(55°F)		16°C
(62°F)		21°C
(70°F)		24°C
(75°F)		27°C
(82°F)		29°C
(85°F)		26°C
(78°F)		21°C
(70°F)		16°C
(62°F)		11°C
(52°F)
Daily mean6°C
(43°F)		7°C
(44°F)		10°C
(50°F)		14°C
(57°F)		19°C
(66°F)		22°C
(71°F)		25°C
(78°F)		27°C
(81°F)		24°C
(75°F)		19°C
(66°F)		14°C
(58°F)		9°C
(48°F)
Average low3°C
(38°F)		4°C
(39°F)		7°C
(45°F)		11°C
(52°F)		16°C
(62°F)		20°C
(68°F)		23°C
(75°F)		25°C
(78°F)		22°C
(72°F)		17°C
(63°F)		12°C
(53°F)		6°C
(43°F)
Mean minimum0°C
(33°F)		1°C
(33°F)		3°C
(37°F)		6°C
(43°F)		11°C
(53°F)		17°C
(63°F)		21°C
(69°F)		22°C
(71°F)		18°C
(65°F)		12°C
(54°F)		7°C
(44°F)		2°C
(36°F)
Minimum-2°C
(28°F)		-0°C
(32°F)		1°C
(34°F)		4°C
(40°F)		10°C
(51°F)		16°C
(61°F)		19°C
(66°F)		20°C
(69°F)		16°C
(60°F)		11°C
(53°F)		5°C
(41°F)		0°C
(33°F)

Compare climate in Kisarazu with other places

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

Monthly average precipitation in Kisarazu, Japan

Kisarazu usually has the most precipitation in July, September and October, with an average of 17 rainy days and 257 mm (10.1 inches) of precipitation per month. The driest months in Kisarazu are January, February and December. On average, 65 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kisarazu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)63 (2.5)50 (2.0)162 (6.4)137 (5.4)147 (5.8)190 (7.5)226 (8.9)118 (4.7)232 (9.1)313 (12.3)119 (4.7)80 (3.2)
Average precipitation days (≥ 1 mm)571311121416131817128

Monthly sunshine hours in Kisarazu, Japan

The sunniest months in Kisarazu are April, May and August, when the sun shines an average of 9 hours 7 minutes a day. Least sunny months in Kisarazu: January, October and December receive an average of 6 hours 35 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kisarazu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours188229256270281256237288233200225224
Mean daily daylight hours10h 2m10h 52m11h 58m13h 5m14h 2m14h 30m14h 16m13h 26m12h 22m11h 15m10h 16m9h 46m

Solar UV radiation in Kisarazu, Japan

Kisarazu experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 11, 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 Kisarazu UV Index data.

Average daily maximum UV levels by month for Kisarazu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3579101111119753