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Monthly climate in Rulles, Belgium

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Rulles features a oceanic climate (Cfb). Temperatures typically range between 2 °C (35 °F) and 18 °C (65 °F) through the year, but rarely can drop to -12 °C (10 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1039 mm (40.9 inches) and receives 161 rainy days on the 1 mm (0.04 inches) threshold annually. Rulles enjoys an average of 3319 hours of sunshine throughout the year, and daylight varies from 8 hours 10 minutes to 16 hours 13 minutes per day.

Monthly average temperatures in Rulles, Belgium

The warmest months in Rulles are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (63 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 3 °C (35 - 38 °F) throughout the day. On average each year, Rulles experiences 22 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 Rulles. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum11°C
(53°F)		19°C
(66°F)		21°C
(71°F)		26°C
(79°F)		30°C
(86°F)		32°C
(90°F)		37°C
(99°F)		35°C
(95°F)		33°C
(91°F)		24°C
(75°F)		18°C
(65°F)		14°C
(57°F)
Mean maximum10°C
(50°F)		14°C
(57°F)		17°C
(64°F)		22°C
(72°F)		25°C
(78°F)		27°C
(81°F)		30°C
(87°F)		30°C
(87°F)		27°C
(82°F)		21°C
(70°F)		15°C
(59°F)		12°C
(54°F)
Average high4°C
(39°F)		6°C
(44°F)		9°C
(49°F)		14°C
(57°F)		17°C
(63°F)		22°C
(71°F)		22°C
(73°F)		22°C
(73°F)		19°C
(66°F)		14°C
(57°F)		8°C
(46°F)		5°C
(42°F)
Daily mean2°C
(35°F)		3°C
(38°F)		6°C
(42°F)		9°C
(48°F)		12°C
(55°F)		17°C
(63°F)		18°C
(65°F)		18°C
(65°F)		14°C
(58°F)		10°C
(51°F)		5°C
(42°F)		3°C
(38°F)
Average low-0°C
(32°F)		1°C
(34°F)		2°C
(36°F)		4°C
(40°F)		8°C
(46°F)		12°C
(54°F)		13°C
(56°F)		14°C
(57°F)		10°C
(50°F)		7°C
(46°F)		3°C
(38°F)		2°C
(35°F)
Mean minimum-6°C
(21°F)		-6°C
(22°F)		-4°C
(25°F)		-2°C
(29°F)		1°C
(34°F)		7°C
(45°F)		8°C
(47°F)		8°C
(47°F)		5°C
(41°F)		2°C
(35°F)		-2°C
(28°F)		-4°C
(24°F)
Minimum-11°C
(12°F)		-10°C
(13°F)		-12°C
(10°F)		-3°C
(27°F)		-1°C
(31°F)		5°C
(42°F)		7°C
(45°F)		5°C
(42°F)		3°C
(38°F)		1°C
(33°F)		-4°C
(26°F)		-5°C
(23°F)

Compare climate in Rulles with other places

Compare temperature, precipitation, sunshine, UV index in Rulles, Belgium with other places around the world.

Monthly average precipitation in Rulles, Belgium

Rulles usually has the most precipitation in March, October and December, with an average of 16 rainy days and 116 mm (4.6 inches) of precipitation per month. The driest months in Rulles are April, August and September. On average, 63 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rulles. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)92 (3.6)91 (3.6)103 (4.1)47 (1.8)82 (3.2)84 (3.3)73 (2.9)71 (2.8)73 (2.9)95 (3.8)79 (3.1)149 (5.9)
Average precipitation days (≥ 1 mm)131315111413111510131320

Monthly sunshine hours in Rulles, Belgium

The sunniest months in Rulles are May, June and July, when the sun shines an average of 13 hours 6 minutes a day. Least sunny months in Rulles: January, November and December receive an average of 4 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rulles. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours106185247345387410408385316239174111
Mean daily daylight hours8h 38m10h 6m11h 55m13h 47m15h 23m16h 13m15h 47m14h 20m12h 33m10h 42m9h 3m8h 10m

Solar UV radiation in Rulles, Belgium

Rulles experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure. January, November 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 Rulles UV Index data.

Average daily maximum UV levels by month for Rulles. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)234689886421