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Monthly climate in Ome, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Ome features a humid subtropical climate (Cfa). Temperatures typically range between 3 °C (37 °F) and 26 °C (79 °F) through the year, but rarely can drop to -13 °C (9 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 2022 mm (79.6 inches) and receives 187 rainy days on the 1 mm (0.04 inches) threshold annually. Ome enjoys an average of 2916 hours of sunshine throughout the year, and daylight varies from 9 hours 45 minutes to 14 hours 32 minutes per day.

Monthly average temperatures in Ome, Japan

The warmest months in Ome are July, August and September, with daily mean temperatures ranging from 22 to 26 °C (71 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 5 °C (37 - 42 °F) throughout the day. On average each year, Ome experiences 73 days above 25 °C (77.0 °F) and 53 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ome. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum17°C
(63°F)		21°C
(69°F)		23°C
(73°F)		26°C
(79°F)		30°C
(86°F)		31°C
(88°F)		35°C
(95°F)		36°C
(97°F)		35°C
(94°F)		30°C
(86°F)		23°C
(73°F)		20°C
(69°F)
Mean maximum14°C
(58°F)		17°C
(62°F)		20°C
(69°F)		24°C
(76°F)		28°C
(83°F)		28°C
(82°F)		32°C
(90°F)		34°C
(94°F)		32°C
(90°F)		27°C
(81°F)		21°C
(69°F)		17°C
(63°F)
Average high8°C
(46°F)		9°C
(49°F)		13°C
(56°F)		17°C
(63°F)		22°C
(71°F)		24°C
(75°F)		27°C
(81°F)		29°C
(85°F)		25°C
(77°F)		20°C
(68°F)		15°C
(60°F)		10°C
(50°F)
Daily mean3°C
(37°F)		4°C
(40°F)		8°C
(47°F)		12°C
(54°F)		17°C
(64°F)		20°C
(69°F)		24°C
(76°F)		26°C
(79°F)		22°C
(71°F)		16°C
(61°F)		11°C
(52°F)		5°C
(42°F)
Average low-1°C
(30°F)		-0°C
(32°F)		3°C
(38°F)		8°C
(46°F)		13°C
(56°F)		17°C
(63°F)		21°C
(71°F)		23°C
(73°F)		19°C
(66°F)		13°C
(56°F)		7°C
(45°F)		1°C
(35°F)
Mean minimum-6°C
(22°F)		-4°C
(24°F)		-3°C
(28°F)		1°C
(34°F)		6°C
(43°F)		13°C
(56°F)		18°C
(64°F)		18°C
(65°F)		14°C
(58°F)		7°C
(45°F)		0°C
(33°F)		-3°C
(26°F)
Minimum-13°C
(9°F)		-6°C
(21°F)		-4°C
(26°F)		-2°C
(29°F)		4°C
(39°F)		11°C
(52°F)		16°C
(60°F)		15°C
(59°F)		12°C
(53°F)		5°C
(41°F)		-1°C
(30°F)		-5°C
(23°F)

Compare climate in Ome with other places

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

Monthly average precipitation in Ome, Japan

Ome usually has the most precipitation in July, September and October, with an average of 21 rainy days and 302 mm (11.9 inches) of precipitation per month. The driest months in Ome are January, February and December. On average, 59 mm (2.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ome. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)53 (2.1)62 (2.4)166 (6.5)150 (5.9)148 (5.8)209 (8.2)312 (12.3)195 (7.7)247 (9.7)346 (13.6)72 (2.8)62 (2.4)
Average precipitation days (≥ 1 mm)7101415151924232219109

Monthly sunshine hours in Ome, Japan

The sunniest months in Ome are April, May and August, when the sun shines an average of 9 hours 7 minutes a day. Least sunny months in Ome: January, July and October receive an average of 6 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ome. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours191233259272282261226284234205231232
Mean daily daylight hours10h 0m10h 51m11h 57m13h 5m14h 3m14h 32m14h 17m13h 27m12h 22m11h 15m10h 15m9h 45m

Solar UV radiation in Ome, Japan

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

Average daily maximum UV levels by month for Ome. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)46891111111110754