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Monthly climate in Biratori, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Biratori features a humid continental climate (Dfb). Temperatures typically range between -3 °C (26 °F) and 21 °C (69 °F) through the year, but rarely can drop to -14 °C (7 °F) or can rise to as high as 29 °C (85 °F). The average annual precipitation amounts to about 1276 mm (50.2 inches) and receives 153 rainy days on the 1 mm (0.04 inches) threshold annually. Biratori enjoys an average of 3013 hours of sunshine throughout the year, and daylight varies from 9 hours 5 minutes to 15 hours 14 minutes per day.

Monthly average temperatures in Biratori, Japan

The warmest months in Biratori are July, August and September, with daily mean temperatures ranging from 18 to 21 °C (65 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to 0 °C (26 - 31 °F) throughout the day. On average each year, Biratori experiences 8 days above 25 °C (77.0 °F) and 105 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Biratori. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum8°C
(46°F)		7°C
(44°F)		12°C
(54°F)		16°C
(61°F)		23°C
(74°F)		23°C
(73°F)		29°C
(84°F)		29°C
(85°F)		27°C
(82°F)		22°C
(73°F)		16°C
(61°F)		13°C
(56°F)
Mean maximum5°C
(41°F)		6°C
(42°F)		10°C
(50°F)		14°C
(57°F)		19°C
(67°F)		19°C
(67°F)		26°C
(79°F)		27°C
(81°F)		25°C
(77°F)		21°C
(70°F)		15°C
(60°F)		10°C
(51°F)
Average high-1°C
(31°F)		-0°C
(32°F)		4°C
(40°F)		9°C
(48°F)		14°C
(57°F)		17°C
(63°F)		21°C
(70°F)		23°C
(73°F)		21°C
(70°F)		15°C
(60°F)		9°C
(48°F)		2°C
(36°F)
Daily mean-3°C
(26°F)		-3°C
(26°F)		2°C
(35°F)		6°C
(43°F)		11°C
(52°F)		15°C
(59°F)		19°C
(67°F)		21°C
(69°F)		18°C
(65°F)		13°C
(55°F)		6°C
(44°F)		-0°C
(31°F)
Average low-6°C
(21°F)		-6°C
(21°F)		-1°C
(30°F)		3°C
(38°F)		9°C
(48°F)		12°C
(55°F)		17°C
(63°F)		19°C
(66°F)		15°C
(60°F)		10°C
(50°F)		4°C
(39°F)		-3°C
(27°F)
Mean minimum-12°C
(10°F)		-12°C
(10°F)		-8°C
(18°F)		-1°C
(30°F)		4°C
(40°F)		8°C
(48°F)		14°C
(57°F)		14°C
(57°F)		10°C
(50°F)		4°C
(40°F)		-2°C
(29°F)		-9°C
(17°F)
Minimum-14°C
(7°F)		-14°C
(7°F)		-10°C
(15°F)		-2°C
(29°F)		3°C
(38°F)		7°C
(44°F)		12°C
(53°F)		12°C
(54°F)		7°C
(46°F)		3°C
(38°F)		-5°C
(24°F)		-11°C
(12°F)

Compare climate in Biratori with other places

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

Monthly average precipitation in Biratori, Japan

Biratori usually has the most precipitation in August, September and October, with an average of 13 rainy days and 151 mm (5.9 inches) of precipitation per month. The driest months in Biratori are January, February and December. On average, 67 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Biratori. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)53 (2.1)65 (2.5)91 (3.6)94 (3.7)101 (4.0)116 (4.6)104 (4.1)152 (6.0)120 (4.7)181 (7.1)116 (4.6)83 (3.3)
Average precipitation days (≥ 1 mm)121211121110111312141520

Monthly sunshine hours in Biratori, Japan

The sunniest months in Biratori are May, June and July, when the sun shines an average of 9 hours 57 minutes a day. Least sunny months in Biratori: January, November and December receive an average of 5 hours 58 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Biratori. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours163210268288311305299285262231196190
Mean daily daylight hours9h 25m10h 31m11h 56m13h 22m14h 36m15h 14m14h 55m13h 50m12h 27m11h 1m9h 45m9h 5m

Solar UV radiation in Biratori, Japan

Biratori experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High category of sun exposure. January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Biratori UV Index data.

Average daily maximum UV levels by month for Biratori. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235891010108632