nomadseason

Monthly climate in Tomi, Nagano, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Tomi features a humid continental climate (Dfb).Temperatures typically range between 0 °C (32 °F) and 24 °C (75 °F) through the year, but rarely can drop to -13 °C (9 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 1391 mm (54.8 inches) and receives 144 rainy days on the 1 mm (0.04 inches) threshold annually.Tomi enjoys an average of 2905 hours of sunshine throughout the year, and daylight varies from 9 hours 42 minutes to 14 hours 34 minutes per day.

Monthly average temperatures in Tomi, Nagano, Japan §

The warmest months in Tomi are July, August and September, with daily mean temperatures ranging from 19 to 24 °C (67 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 2 °C (32 - 36 °F) throughout the day. On average each year, Tomi experiences 63 days above 25 °C (77.0 °F) and 99 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Tomi, Nagano, 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 11°C
(52°F)		 17°C
(63°F)		 22°C
(71°F)		 27°C
(81°F)		 31°C
(89°F)		 31°C
(88°F)		 34°C
(94°F)		 35°C
(95°F)		 31°C
(88°F)		 27°C
(81°F)		 20°C
(68°F)		 18°C
(65°F)
Mean maximum 10°C
(50°F)		 13°C
(56°F)		 19°C
(66°F)		 23°C
(74°F)		 28°C
(83°F)		 28°C
(82°F)		 31°C
(89°F)		 33°C
(92°F)		 28°C
(83°F)		 26°C
(79°F)		 19°C
(66°F)		 13°C
(56°F)
Average high 4°C
(39°F)		 5°C
(42°F)		 10°C
(51°F)		 15°C
(60°F)		 21°C
(70°F)		 24°C
(75°F)		 27°C
(80°F)		 29°C
(84°F)		 24°C
(75°F)		 18°C
(64°F)		 13°C
(55°F)		 7°C
(44°F)
Daily mean -0°C
(32°F)		 1°C
(33°F)		 5°C
(41°F)		 9°C
(49°F)		 15°C
(60°F)		 19°C
(66°F)		 22°C
(73°F)		 24°C
(75°F)		 19°C
(67°F)		 13°C
(56°F)		 7°C
(45°F)		 2°C
(36°F)
Average low -4°C
(26°F)		 -3°C
(26°F)		 0°C
(33°F)		 4°C
(40°F)		 10°C
(50°F)		 14°C
(58°F)		 19°C
(66°F)		 20°C
(68°F)		 16°C
(60°F)		 10°C
(49°F)		 3°C
(37°F)		 -1°C
(30°F)
Mean minimum -9°C
(16°F)		 -10°C
(15°F)		 -4°C
(25°F)		 -2°C
(28°F)		 2°C
(35°F)		 10°C
(49°F)		 16°C
(61°F)		 16°C
(61°F)		 10°C
(50°F)		 3°C
(38°F)		 -2°C
(28°F)		 -5°C
(23°F)
Minimum -13°C
(9°F)		 -11°C
(12°F)		 -6°C
(22°F)		 -4°C
(26°F)		 -0°C
(32°F)		 7°C
(45°F)		 15°C
(59°F)		 12°C
(53°F)		 7°C
(45°F)		 2°C
(35°F)		 -3°C
(26°F)		 -7°C
(20°F)

Compare climate in Tomi with other places

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

Monthly average precipitation in Tomi, Nagano, Japan §

Tomi usually has the most precipitation in July, September and October, with an average of 15 rainy days and 195 mm (7.7 inches) of precipitation per month.The driest months in Tomi are January, February and November. On average, 54 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tomi, Nagano, 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) 56 (2.2) 61 (2.4) 110 (4.3) 111 (4.4) 120 (4.7) 121 (4.8) 229 (9.0) 121 (4.7) 144 (5.7) 212 (8.4) 45 (1.8) 62 (2.4)
Average precipitation days (≥ 1 mm) 10 9 12 12 11 12 18 15 15 13 7 10

Monthly sunshine hours in Tomi, Nagano, Japan §

The sunniest months in Tomi are April, May and August, when the sun shines an average of 9 hours 10 minutes a day.Least sunny months in Tomi: January, October and December receive an average of 6 hours 34 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tomi, Nagano, 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 183 231 260 278 286 266 236 278 228 209 226 218
Mean daily daylight hours 9h 58m 10h 50m 11h 57m 13h 7m 14h 5m 14h 34m 14h 20m 13h 29m 12h 22m 11h 14m 10h 13m 9h 42m

Solar UV radiation in Tomi, Nagano, Japan §

Tomi 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 Tomi UV Index data.

Average daily maximum UV levels by month for Tomi, Nagano, 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) 4 6 8 9 11 11 11 11 10 7 5 3