La Unión in Spring

In spring (March, April and May), La Unión sees average daytime highs around 23°C and overnight lows near 15°C, with 1234 mm of rain over about 88 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.

Across spring, daytime highs hold fairly steady around 23°C. The sky is clear or mostly clear about 0% of the time across spring, and the air most often feels humid.

Spring is La Unión's weakest season of the year to visit on our travel score. La Unión has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see La Unión's year-round climate.

Avg daytime high: 23°C; 3rd-warmest season
Avg overnight low: 15°C
Rainfall: 1234 mm; 88 wet days
Avg wind: 3 km/h
Travel score: 3.6; weakest season of the year
Months: Mar · Apr · May

← Winter La Unión year-round climate Summer →

Spring Summer Fall Winter

Temperature in La Unión in Spring

Average highAverage lowShaded bands: 10–90% of days

Across spring, daytime highs hold fairly steady around 23°C.

A typical spring day in La Unión reaches about 23°C and drops to 15°C overnight. The warmest of the three months is May, the coolest March.

La Unión weather by month

How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	22° / 15°	342	29.2	11.9	3.7
Feb	23° / 15°	343	26.3	11.9	3.6
Mar	23° / 15°	401	29.6	12	3.6
Apr	23° / 15°	441	29.3	12	3.5
May	23° / 15°	392	29.1	12.1	3.6
Jun	23° / 15°	270	24.3	12.1	4.3
Jul	24° / 15°	181	20.1	12.1	5.2
Aug	24° / 15°	147	18.4	12.1	5.4
Sep	24° / 15°	258	24.5	12	4.3
Oct	23° / 15°	381	29.6	12	3.6
Nov	22° / 15°	393	28.9	11.9	3.4
Dec	22° / 15°	388	29.6	11.9	3.6

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time across spring.

Chance of precipitation in Spring

Any precipitation

La Unión gets around 1234 mm of rain over 88 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 3 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 12 hours in early March to 12 h 06 min by late May. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 4.9 kWh/m².

Planning a trip in spring

Is spring a good time to visit La Unión?

Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

3.6

Sightseeing

4th-best month of the year

2.7

Beach & pool

3rd-best month of the year

spring is a weaker month for outdoor sightseeing in La Unión.

What to pack for La Unión in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, La Unión sees daytime highs around 23°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 88 days see rain.

rain gearlight clothessun protection

UV index in La Unión in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in La Unión peaks around February 19 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 at about 12 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	15	16	16	14	15	13	12	12	14	14	13	13
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	15	Extreme
Feb	16	Extreme
Mar	16	Extreme
Apr	14	Extreme
May	15	Extreme
Jun	13	Extreme
Jul	12	Extreme
Aug	12	Extreme
Sep	14	Extreme
Oct	14	Extreme
Nov	13	Extreme
Dec	13	Extreme

Air quality in La Unión in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in La Unión is worst in March — around 18 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (July, 11 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	14	18	18	16	13	11	11	14	17	15	14	14
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	14	Moderate
Feb	18	Moderate
Mar	18	Moderate
Apr	16	Moderate
May	13	Moderate
Jun	11	Good
Jul	11	Good
Aug	14	Moderate
Sep	17	Moderate
Oct	15	Moderate
Nov	14	Moderate
Dec	14	Moderate

Location & terrain

Where is La Unión?

La Unión sits at 1.6°N, 77.1°W, 1,721 m above sea level, in Colombia. The nearest listed city is San Lorenzo, 15 km away.

Topography around La Unión

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of La Unión.

Within 3 km, the terrain around La Unión has large variations in elevation — a maximum elevation change of 1,092 m around an average of 1,673 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,489 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,093 m.

The land around La Unión is covered by trees (94%) within 3 km, trees (64%) and grassland (36%) within 16 km, and trees (76%) and grassland (23%) within 80 km.

3 km

1,092 m

trees 94%

16 km

2,489 m

trees 64%

80 km

4,093 m

trees 76%

treesgrasslandartificial surfaces

← Winter La Unión year-round climate Summer →

Spring weather nearby: San Lorenzo 15 km · Buesaco 25 km · Providencia 37 km · Pasto 46 km · Balboa 50 km · Patía 52 km · Samaniego 59 km · Mocoa 73 km

Colombia travel facts

Travel advisory: Level 3; Reconsider Travel
Power plugs: Type A / B; 120 / 240 V · 60 Hz
Prices: ≈ 38% of US; price level, 2025
GDP per capita: $8,562; 2025
Happiness: 6.0 / 10; World Happiness, 2025
Safe drinking water: 74%; of population, 2024
Homicide rate: 24.9; per 100k, 2023
Road deaths: 15.4; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Low; EF EPI 480
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for La Unión (1.6045°, -77.1315°, elevation 1,721 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.