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Monthly climate in Tres Arroyos, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Tres Arroyos features a oceanic climate (Cfb). Temperatures typically range between 7 °C (46 °F) and 22 °C (72 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 40 °C (104 °F). The average annual precipitation amounts to about 758 mm (29.9 inches) and receives 85 rainy days on the 1 mm (0.04 inches) threshold annually. Tres Arroyos enjoys an average of 3426 hours of sunshine throughout the year, and daylight varies from 9 hours 30 minutes to 14 hours 46 minutes per day.

Monthly average temperatures in Tres Arroyos, Argentina

The warmest months in Tres Arroyos are January, February and December, with daily mean temperatures ranging from 20 to 22 °C (69 - 72 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 7 to 9 °C (46 - 49 °F) throughout the day. On average each year, Tres Arroyos experiences 91 days above 25 °C (77.0 °F) and 10 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Tres Arroyos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum40°C
(104°F)		36°C
(97°F)		34°C
(94°F)		29°C
(85°F)		25°C
(78°F)		23°C
(73°F)		19°C
(67°F)		25°C
(77°F)		29°C
(84°F)		34°C
(93°F)		33°C
(92°F)		36°C
(97°F)
Mean maximum36°C
(98°F)		35°C
(95°F)		32°C
(90°F)		28°C
(83°F)		23°C
(74°F)		18°C
(64°F)		18°C
(65°F)		23°C
(73°F)		25°C
(76°F)		29°C
(85°F)		31°C
(88°F)		35°C
(95°F)
Average high29°C
(84°F)		27°C
(81°F)		25°C
(76°F)		21°C
(70°F)		16°C
(62°F)		13°C
(56°F)		12°C
(55°F)		15°C
(60°F)		17°C
(63°F)		19°C
(67°F)		23°C
(74°F)		27°C
(81°F)
Daily mean22°C
(72°F)		21°C
(69°F)		19°C
(66°F)		15°C
(60°F)		11°C
(52°F)		9°C
(48°F)		7°C
(46°F)		9°C
(49°F)		11°C
(52°F)		14°C
(57°F)		17°C
(63°F)		20°C
(69°F)
Average low15°C
(60°F)		15°C
(59°F)		13°C
(56°F)		11°C
(52°F)		7°C
(45°F)		5°C
(41°F)		3°C
(39°F)		5°C
(40°F)		6°C
(43°F)		8°C
(47°F)		11°C
(52°F)		13°C
(56°F)
Mean minimum8°C
(46°F)		8°C
(46°F)		6°C
(44°F)		4°C
(39°F)		0°C
(33°F)		-2°C
(29°F)		-2°C
(29°F)		-2°C
(29°F)		-1°C
(31°F)		0°C
(33°F)		4°C
(40°F)		6°C
(43°F)
Minimum6°C
(44°F)		6°C
(43°F)		4°C
(39°F)		1°C
(35°F)		-2°C
(28°F)		-3°C
(28°F)		-3°C
(28°F)		-3°C
(27°F)		-2°C
(28°F)		-1°C
(30°F)		3°C
(38°F)		4°C
(40°F)

Compare climate in Tres Arroyos with other places

Compare temperature, precipitation, sunshine, UV index in Tres Arroyos, Argentina with other places around the world.

Monthly average precipitation in Tres Arroyos, Argentina

Tres Arroyos usually has the most precipitation in February, November and December, with an average of 9 rainy days and 85 mm (3.4 inches) of precipitation per month. The driest months in Tres Arroyos are June, July and August. On average, 40 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tres Arroyos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)70 (2.8)82 (3.2)65 (2.6)82 (3.2)46 (1.8)44 (1.7)43 (1.7)33 (1.3)52 (2.1)67 (2.7)85 (3.4)89 (3.5)
Average precipitation days (≥ 1 mm)6888666378109

Monthly sunshine hours in Tres Arroyos, Argentina

The sunniest months in Tres Arroyos are February, November and December, when the sun shines an average of 11 hours 38 minutes a day. Least sunny months in Tres Arroyos: May, June and July receive an average of 7 hours 0 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tres Arroyos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours313322317253229201214259271318339386
Mean daily daylight hours14h 28m13h 29m12h 16m11h 2m10h 0m9h 30m9h 47m10h 41m11h 51m13h 6m14h 12m14h 46m

Solar UV radiation in Tres Arroyos, Argentina

Tres Arroyos experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 12 - 14, which corresponds to the Extreme category of sun exposure. May, June and July are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Tres Arroyos UV Index data.

Average daily maximum UV levels by month for Tres Arroyos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)141210743357101214