La Unión in Spring
In spring (March, April and May), La Unión sees average daytime highs around 17°C and overnight lows near 15°C, with 66 mm of rain over about 10 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 15°C in early March to 20°C by late May. The sky is clear or mostly clear about 57% of the time across spring, and the air most often feels dry.
Spring is La Unión's 3rd-best season to visit on our travel score. For the whole year in context, see La Unión's year-round climate.
- Avg daytime high
- 17°C
- 3rd-warmest season
- Avg overnight low
- 15°C
- Rainfall
- 66 mm
- 10 wet days
- Avg wind
- 18 km/h
- Travel score
- 6.5
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in La Unión in Spring
Over the season highs climb from about 15°C in early March to 20°C by late May.
A typical spring day in La Unión reaches about 17°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 | 14° / 12° | 35 | 4.6 | 9.7 | 5.0 |
| Feb | 14° / 12° | 23 | 3.9 | 10.5 | 5.0 |
| Mar | 15° / 13° | 29 | 4.3 | 11.7 | 5.5 |
| Apr | 17° / 15° | 22 | 3.2 | 12.9 | 6.4 |
| May | 19° / 17° | 16 | 2 | 14 | 7.7 |
| Jun | 22° / 21° | 5 | 0.8 | 14.5 | 8.9 |
| Jul | 25° / 23° | 1 | 0.1 | 14.3 | 9.4 |
| Aug | 26° / 24° | 6 | 1.3 | 13.4 | 8.9 |
| Sep | 24° / 22° | 33 | 3.5 | 12.3 | 8.4 |
| Oct | 21° / 19° | 36 | 4.3 | 11 | 7.7 |
| Nov | 18° / 16° | 39 | 5.8 | 10 | 6.6 |
| Dec | 15° / 13° | 30 | 4.7 | 9.4 | 5.5 |
Cloud cover in Spring
The sky is clear or mostly clear about 57% of the time across spring.
Chance of precipitation in Spring
La Unión gets around 66 mm of rain over 10 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 18 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 06 min in early March to 14 h 24 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 6.2 kWh/m².
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.
spring is a reasonable time to visit La Unión for sightseeing.
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 17°C and nights near 15°C. Pack sun protection. Worth having: a warm layer. About 10 days see rain.
Sea temperature near La Unión in Spring
The nearest coast averages about 16°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 22 km away) is warmest in August at about 26°C and coldest in February near 14°C.
It's comfortable for a long swim from Jun 2 to Nov 4 — about 5.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 14 | 15 | 16 | 18 | 22 | 24 | 26 | 25 | 22 | 19 | 16 |
| Comfort | Cool | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Cool |
| Feb | 14 | Bracing |
| Mar | 15 | Bracing |
| Apr | 16 | Cool |
| May | 18 | Cool |
| Jun | 22 | Refreshing |
| Jul | 24 | Warm |
| Aug | 26 | Warm |
| Sep | 25 | Warm |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 16 | Cool |
UV index in La Unión in Spring
Clear-sky midday UV across spring averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in La Unión peaks around July 14 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 6 | 7 | 7 | 9 | 10 | 7 | 7 | 5 | 3 | 2 |
| Level | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 6 | High |
| Apr | 7 | Very high |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 7 | Very high |
| Sep | 7 | High |
| Oct | 5 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Where is La Unión?
La Unión sits at 37.6°N, 0.9°W, 104 m above sea level, in Spain. The nearest listed city is Atamaría, 7.0 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 significant variations in elevation — a maximum elevation change of 346 m around an average of 136 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 481 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,554 m.
The land around La Unión is covered by grassland (33%) within 3 km, water (48%) and cropland (21%) within 16 km, and water (45%) and grassland (20%) within 80 km.
Spain travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 65% of US
- price level, 2025
- GDP per capita
- $38,627
- 2025
- Happiness
- 6.5 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2023
- Road deaths
- 3.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 540
- 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 (37.6191°, -0.878°, elevation 104 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.