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Monthly climate in Shiroi, Chiba, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Shiroi features a humid subtropical climate (Cfa).Temperatures typically range between 5 °C (41 °F) and 28 °C (82 °F) through the year, but rarely can drop to -7 °C (20 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1562 mm (61.5 inches) and receives 139 rainy days on the 1 mm (0.04 inches) threshold annually.Shiroi enjoys an average of 2893 hours of sunshine throughout the year, and daylight varies from 9 hours 46 minutes to 14 hours 31 minutes per day.

Monthly average temperatures in Shiroi, Chiba, Japan §

The warmest months in Shiroi 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 5 to 8 °C (41 - 46 °F) throughout the day. On average each year, Shiroi experiences 90 days above 25 °C (77.0 °F) and 15 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Shiroi, Chiba, Japan.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 17°C
(63°F)		 19°C
(66°F)		 22°C
(72°F)		 26°C
(79°F)		 30°C
(87°F)		 33°C
(91°F)		 37°C
(99°F)		 35°C
(95°F)		 34°C
(93°F)		 30°C
(87°F)		 23°C
(74°F)		 21°C
(70°F)
Mean maximum 15°C
(59°F)		 16°C
(62°F)		 20°C
(69°F)		 24°C
(76°F)		 28°C
(82°F)		 29°C
(84°F)		 33°C
(92°F)		 34°C
(94°F)		 32°C
(90°F)		 28°C
(83°F)		 22°C
(71°F)		 18°C
(65°F)
Average high 9°C
(49°F)		 10°C
(51°F)		 14°C
(58°F)		 18°C
(64°F)		 23°C
(73°F)		 25°C
(78°F)		 29°C
(84°F)		 31°C
(88°F)		 27°C
(80°F)		 22°C
(71°F)		 17°C
(63°F)		 11°C
(53°F)
Daily mean 5°C
(41°F)		 6°C
(44°F)		 10°C
(51°F)		 14°C
(58°F)		 19°C
(67°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
(46°F)
Average low 1°C
(35°F)		 2°C
(37°F)		 6°C
(43°F)		 10°C
(51°F)		 16°C
(61°F)		 19°C
(67°F)		 23°C
(74°F)		 25°C
(77°F)		 21°C
(71°F)		 16°C
(61°F)		 10°C
(50°F)		 4°C
(40°F)
Mean minimum -3°C
(27°F)		 -2°C
(30°F)		 0°C
(33°F)		 5°C
(41°F)		 10°C
(50°F)		 16°C
(62°F)		 20°C
(68°F)		 21°C
(69°F)		 17°C
(62°F)		 11°C
(51°F)		 4°C
(39°F)		 -1°C
(31°F)
Minimum -7°C
(20°F)		 -3°C
(27°F)		 -2°C
(29°F)		 2°C
(37°F)		 8°C
(47°F)		 15°C
(59°F)		 18°C
(65°F)		 18°C
(65°F)		 14°C
(57°F)		 8°C
(47°F)		 2°C
(35°F)		 -2°C
(28°F)

Compare climate in Shiroi with other places

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

Monthly average precipitation in Shiroi, Chiba, Japan §

Shiroi usually has the most precipitation in July, September and October, with an average of 16 rainy days and 226 mm (8.9 inches) of precipitation per month.The driest months in Shiroi are January, February and December. On average, 52 mm (2.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Shiroi, Chiba, Japan.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 49 (1.9) 43 (1.7) 134 (5.3) 116 (4.6) 125 (4.9) 160 (6.3) 224 (8.8) 105 (4.1) 192 (7.6) 261 (10.3) 90 (3.5) 64 (2.5)
Average precipitation days (≥ 1 mm) 5 7 12 10 12 14 18 13 16 15 10 7

Monthly sunshine hours in Shiroi, Chiba, Japan §

The sunniest months in Shiroi are April, May and August, when the sun shines an average of 9 hours 7 minutes a day.Least sunny months in Shiroi: 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 Shiroi, Chiba, Japan.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 188 229 256 270 281 256 237 288 233 200 225 224
Mean daily daylight hours 10h 1m 10h 52m 11h 57m 13h 5m 14h 2m 14h 31m 14h 17m 13h 27m 12h 22m 11h 15m 10h 16m 9h 46m

Solar UV radiation in Shiroi, Chiba, Japan §

Shiroi 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 Shiroi UV Index data.

Average daily maximum UV levels by month for Shiroi, Chiba, Japan.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 7 9 10 11 11 11 9 7 5 3