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Monthly climate in La Union, Colombia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification La Union features a oceanic climate (Cfb). Temperatures typically range between 18 °C (65 °F) and 20 °C (67 °F) through the year, but rarely can drop to 9 °C (49 °F) or can rise to as high as 30 °C (86 °F). The average annual precipitation amounts to about 2652 mm (104.4 inches) and receives 251 rainy days on the 1 mm (0.04 inches) threshold annually. La Union enjoys an average of 3267 hours of sunshine throughout the year, and daylight varies from 11 hours 46 minutes to 12 hours 26 minutes per day.

Monthly average temperatures in La Union, Colombia

The warmest months in La Union are July, August and September, with daily mean temperatures ranging from 19 to 20 °C (67 - 67 °F) throughout the day. The coldest temperatures usually occur in January, October and November, when daily mean temperatures range from 18 to 18 °C (65 - 65 °F) throughout the day. On average each year, La Union experiences 106 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in La Union. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum27°C
(81°F)		28°C
(82°F)		27°C
(81°F)		27°C
(81°F)		28°C
(83°F)		28°C
(83°F)		29°C
(84°F)		30°C
(86°F)		30°C
(86°F)		27°C
(81°F)		26°C
(79°F)		26°C
(79°F)
Mean maximum26°C
(79°F)		26°C
(80°F)		26°C
(79°F)		26°C
(80°F)		27°C
(81°F)		26°C
(80°F)		28°C
(83°F)		29°C
(84°F)		28°C
(83°F)		26°C
(80°F)		25°C
(78°F)		26°C
(78°F)
Average high23°C
(74°F)		24°C
(75°F)		23°C
(74°F)		24°C
(75°F)		24°C
(76°F)		25°C
(77°F)		26°C
(79°F)		26°C
(79°F)		25°C
(78°F)		24°C
(75°F)		23°C
(74°F)		24°C
(75°F)
Daily mean18°C
(65°F)		18°C
(66°F)		18°C
(65°F)		19°C
(66°F)		19°C
(66°F)		19°C
(66°F)		19°C
(67°F)		20°C
(67°F)		19°C
(67°F)		18°C
(65°F)		18°C
(65°F)		18°C
(65°F)
Average low14°C
(57°F)		14°C
(58°F)		15°C
(59°F)		15°C
(59°F)		15°C
(59°F)		14°C
(58°F)		14°C
(58°F)		14°C
(58°F)		14°C
(58°F)		15°C
(58°F)		15°C
(59°F)		14°C
(58°F)
Mean minimum11°C
(53°F)		12°C
(54°F)		13°C
(55°F)		13°C
(56°F)		13°C
(56°F)		13°C
(56°F)		13°C
(55°F)		12°C
(54°F)		13°C
(55°F)		12°C
(55°F)		14°C
(57°F)		13°C
(55°F)
Minimum9°C
(49°F)		11°C
(52°F)		12°C
(55°F)		12°C
(55°F)		13°C
(55°F)		12°C
(53°F)		12°C
(54°F)		11°C
(53°F)		12°C
(54°F)		11°C
(53°F)		13°C
(56°F)		12°C
(53°F)

Compare climate in La Union with other places

Compare temperature, precipitation, sunshine, UV index in La Union, Colombia with other places around the world.

Monthly average precipitation in La Union, Colombia

La Union usually has the most precipitation in March, May and November, with an average of 26 rainy days and 348 mm (13.7 inches) of precipitation per month. The driest months in La Union are January, July and August. On average, 104 mm (4.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in La Union. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)119 (4.7)188 (7.4)323 (12.7)304 (12.0)333 (13.1)141 (5.6)69 (2.7)124 (4.9)184 (7.2)317 (12.5)388 (15.3)163 (6.4)
Average precipitation days (≥ 1 mm)172228252218101219272922

Monthly sunshine hours in La Union, Colombia

The sunniest months in La Union are July, August and September, when the sun shines an average of 9 hours 50 minutes a day. Least sunny months in La Union: January, May and November receive an average of 8 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in La Union. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours245273270260256274310306287257239283
Mean daily daylight hours11h 48m11h 55m12h 4m12h 14m12h 22m12h 26m12h 24m12h 17m12h 7m11h 58m11h 50m11h 46m

Solar UV radiation in La Union, Colombia

La Union experiences the highest level of ultraviolet (UV) radiation in March, April and August, when the maximum UV index can reach values of 15 - 17, which corresponds to the Extreme category of sun exposure. June, November and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 14. For more detailed information, check out our hourly La Union UV Index data.

Average daily maximum UV levels by month for La Union. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)141516171514141514141312