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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 tropical savanna climate (Aw). Temperatures typically range between 27 °C (82 °F) and 30 °C (87 °F) through the year, but rarely can drop to 22 °C (72 °F) or can rise to as high as 39 °C (103 °F). The average annual precipitation amounts to about 1799 mm (70.8 inches) and receives 239 rainy days on the 1 mm (0.04 inches) threshold annually. La Union enjoys an average of 3313 hours of sunshine throughout the year, and daylight varies from 11 hours 36 minutes to 12 hours 37 minutes per day.

Monthly average temperatures in La Union, Colombia

The warmest months in La Union are February, March and April, with daily mean temperatures ranging from 29 to 30 °C (84 - 87 °F) throughout the day. The coldest temperatures usually occur in September, October and November, when daily mean temperatures range from 27 to 28 °C (82 - 82 °F) throughout the day. On average each year, La Union experiences 329 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
Maximum37°C
(99°F)		39°C
(103°F)		39°C
(103°F)		38°C
(100°F)		36°C
(97°F)		36°C
(98°F)		36°C
(96°F)		35°C
(96°F)		35°C
(95°F)		36°C
(96°F)		34°C
(94°F)		35°C
(95°F)
Mean maximum36°C
(97°F)		38°C
(101°F)		39°C
(102°F)		36°C
(98°F)		35°C
(95°F)		34°C
(94°F)		35°C
(96°F)		35°C
(95°F)		34°C
(94°F)		34°C
(93°F)		34°C
(93°F)		34°C
(94°F)
Average high34°C
(93°F)		36°C
(97°F)		36°C
(97°F)		34°C
(93°F)		32°C
(91°F)		32°C
(90°F)		33°C
(91°F)		32°C
(91°F)		32°C
(90°F)		32°C
(89°F)		32°C
(89°F)		32°C
(91°F)
Daily mean29°C
(84°F)		30°C
(87°F)		30°C
(86°F)		29°C
(84°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(82°F)		27°C
(82°F)		28°C
(82°F)		28°C
(83°F)
Average low25°C
(77°F)		26°C
(79°F)		26°C
(79°F)		26°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)
Mean minimum23°C
(74°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		23°C
(75°F)		24°C
(75°F)		23°C
(74°F)		24°C
(75°F)		23°C
(74°F)
Minimum22°C
(72°F)		23°C
(74°F)		24°C
(75°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(73°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 May, June and October, with an average of 27 rainy days and 234 mm (9.2 inches) of precipitation per month. The driest months in La Union are January, February and March. On average, 27 mm (1.1 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)27 (1.1)6 (0.2)48 (1.9)150 (5.9)259 (10.2)229 (9.0)198 (7.8)209 (8.2)209 (8.2)214 (8.4)186 (7.3)64 (2.5)
Average precipitation days (≥ 1 mm)519232726252527292715

Monthly sunshine hours in La Union, Colombia

The sunniest months in La Union are February, March and December, when the sun shines an average of 10 hours 21 minutes a day. Least sunny months in La Union: January, May and June receive an average of 8 hours 9 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 hours263306322275239247270268265272268312
Mean daily daylight hours11h 39m11h 50m12h 4m12h 18m12h 31m12h 37m12h 33m12h 22m12h 8m11h 54m11h 42m11h 36m

Solar UV radiation in La Union, Colombia

La Union experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. 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)111214151413131313131110