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Monthly climate in Sienno, Mazovia, Poland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sienno features a oceanic climate (Cfb).Temperatures typically range between -1 °C (31 °F) and 20 °C (68 °F) through the year, but rarely can drop to -18 °C (-1 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 749 mm (29.5 inches) and receives 134 rainy days on the 1 mm (0.04 inches) threshold annually.Sienno enjoys an average of 3334 hours of sunshine throughout the year, and daylight varies from 7 hours 58 minutes to 16 hours 27 minutes per day.

Monthly average temperatures in Sienno, Mazovia, Poland §

The warmest months in Sienno are June, July and August, with daily mean temperatures ranging from 19 to 20 °C (67 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 1 °C (31 - 35 °F) throughout the day. On average each year, Sienno experiences 45 days above 25 °C (77.0 °F) and 83 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sienno, Mazovia, Poland.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 10°C
(51°F)		 17°C
(63°F)		 20°C
(68°F)		 27°C
(81°F)		 29°C
(85°F)		 34°C
(93°F)		 37°C
(99°F)		 35°C
(95°F)		 30°C
(87°F)		 23°C
(75°F)		 20°C
(68°F)		 14°C
(57°F)
Mean maximum 9°C
(48°F)		 12°C
(55°F)		 18°C
(64°F)		 24°C
(75°F)		 27°C
(80°F)		 30°C
(85°F)		 32°C
(90°F)		 32°C
(90°F)		 28°C
(83°F)		 22°C
(72°F)		 17°C
(62°F)		 10°C
(51°F)
Average high 2°C
(35°F)		 4°C
(39°F)		 8°C
(47°F)		 14°C
(57°F)		 19°C
(66°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(78°F)		 20°C
(68°F)		 15°C
(59°F)		 8°C
(47°F)		 3°C
(38°F)
Daily mean -1°C
(31°F)		 1°C
(33°F)		 4°C
(39°F)		 9°C
(48°F)		 14°C
(57°F)		 19°C
(67°F)		 20°C
(68°F)		 20°C
(68°F)		 15°C
(59°F)		 10°C
(51°F)		 5°C
(42°F)		 1°C
(35°F)
Average low -3°C
(27°F)		 -2°C
(28°F)		 -0°C
(32°F)		 3°C
(39°F)		 8°C
(47°F)		 14°C
(57°F)		 15°C
(59°F)		 14°C
(58°F)		 10°C
(51°F)		 7°C
(44°F)		 3°C
(37°F)		 -1°C
(31°F)
Mean minimum -12°C
(12°F)		 -10°C
(13°F)		 -7°C
(19°F)		 -3°C
(27°F)		 2°C
(36°F)		 7°C
(45°F)		 10°C
(51°F)		 9°C
(48°F)		 3°C
(38°F)		 -0°C
(32°F)		 -4°C
(25°F)		 -8°C
(18°F)
Minimum -18°C
(-1°F)		 -18°C
(-0°F)		 -16°C
(3°F)		 -6°C
(21°F)		 -2°C
(28°F)		 5°C
(41°F)		 9°C
(48°F)		 8°C
(47°F)		 1°C
(34°F)		 -2°C
(29°F)		 -7°C
(19°F)		 -14°C
(7°F)

Compare climate in Sienno with other places

Compare temperature, precipitation, sunshine, UV index in Sienno, Mazovia, Poland with other places around the world.

Monthly average precipitation in Sienno, Mazovia, Poland §

Sienno usually has the most precipitation in May, July and August, with an average of 13 rainy days and 93 mm (3.6 inches) of precipitation per month.The driest months in Sienno are January, March and November. On average, 37 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sienno, Mazovia, Poland.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) 36 (1.4) 44 (1.7) 38 (1.5) 56 (2.2) 85 (3.4) 64 (2.5) 85 (3.4) 108 (4.2) 79 (3.1) 69 (2.7) 38 (1.5) 47 (1.9)
Average precipitation days (≥ 1 mm) 10 10 10 10 13 12 14 12 12 10 10 11

Monthly sunshine hours in Sienno, Mazovia, Poland §

The sunniest months in Sienno are June, July and August, when the sun shines an average of 13 hours 13 minutes a day.Least sunny months in Sienno: January, November and December receive an average of 4 hours 31 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sienno, Mazovia, Poland.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 117 186 270 330 375 410 419 386 297 241 179 119
Mean daily daylight hours 8h 27m 10h 0m 11h 54m 13h 52m 15h 34m 16h 27m 15h 59m 14h 27m 12h 34m 10h 38m 8h 53m 7h 58m

Solar UV radiation in Sienno, Mazovia, Poland §

Sienno experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure.January, February and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Sienno UV Index data.

Average daily maximum UV levels by month for Sienno, Mazovia, Poland.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) 1 2 4 5 7 8 8 7 6 3 2 1