La Unión weather in March

In March, La Unión sees average daytime highs of 15°C and overnight lows near 13°C, with 29 mm of rain across 4.3 wet days and about 11.7 hours of daylight. It is the 10th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 15°C through the month. The sky is clear or mostly clear about 56% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of March to 12 h 18 min by month's end. Set against the rest of the year, March is La Unión's 8th-clearest and 2nd-windiest month. For the whole year in context, see La Unión's year-round climate.

Daytime high: 15°; 10th warmest
Overnight low: 13°; 3rd coldest
Rainfall: 29 mm; 4.3 wet days
Daylight: 11 h 42 min; 7:22 AM – 7:04 PM
Cloud cover: 40%; 8th clearest
Wind: 19 km/h; 2nd windiest
Solar energy: 5.02 kWh/m²
Travel score: 5.5; out of 10

La Unión is municipal capital of the homonymous municipality of Campo de Cartagena, Spain.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← February La Unión year-round climate April →Best places to visit in March

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 15°C through the month.

A typical March day in La Unión reaches about 15°C in the afternoon and slips back to 13°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 17°C. Set against its neighbours, March runs about 1°C warmer than February and about 2°C cooler than April.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	16	16	16	16	16	16	16	16	16
Avg low (°C)	12	12	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	14	14	14	14	14	14	14

	Avg high (°C)	Avg low (°C)
1	15	12
2	15	12
3	15	13
4	15	13
5	15	13
6	15	13
7	15	13
8	15	13
9	15	13
10	15	13
11	15	13
12	15	13
13	15	13
14	15	13
15	15	13
16	15	13
17	15	13
18	15	13
19	15	13
20	15	13
21	15	13
22	15	13
23	16	13
24	16	13
25	16	14
26	16	14
27	16	14
28	16	14
29	16	14
30	16	14
31	16	14

La Unión weather by month

How March compares with the rest of the year at a glance. March is the 10th-warmest and 6th-wettest month here — the current month is highlighted below.

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 March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 13% of March, with mostly cloudy or overcast conditions the remaining 31%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	68	68	68	69	69	69	69	69	70	70	70	70	71	71	71	70	70	70	69	69	68	68	68	68	68	68	68	69	70	70	70
Cloudier (%)	32	32	32	31	31	31	31	31	30	30	30	30	29	29	29	30	30	30	31	31	32	32	32	32	32	32	32	31	30	30	30

	Clearer (%)	Cloudier (%)
1	68	32
2	68	32
3	68	32
4	69	31
5	69	31
6	69	31
7	69	31
8	69	31
9	70	30
10	70	30
11	70	30
12	70	30
13	71	29
14	71	29
15	71	29
16	70	30
17	70	30
18	70	30
19	69	31
20	69	31
21	68	32
22	68	32
23	68	32
24	68	32
25	68	32
26	68	32
27	68	32
28	69	31
29	70	30
30	70	30
31	70	30

Chance of precipitation in March

Any precipitation

La Unión gets around 29 mm of rain over 4.3 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 14% and peaks near 16% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	16	16	15	15	15	15	15	15	14	14	14	13	13	13	13	14	14	14	14	14	14	13	13	13	13	13	12	12	12	12	11

	Rain chance (%)
1	16
2	16
3	15
4	15
5	15
6	15
7	15
8	15
9	14
10	14
11	14
12	13
13	13
14	13
15	13
16	14
17	14
18	14
19	14
20	14
21	14
22	13
23	13
24	13
25	13
26	13
27	12
28	12
29	12
30	12
31	11

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the dry band about 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	95	95	94	94	94	93	93	93	93	93	93	92	92	92	91	91	91	91	90	90	90	89	89	88	88	87	87	86	86	85	85
Comfortable (%)	5	5	6	6	6	7	7	7	7	7	7	8	8	8	9	9	9	9	10	10	10	11	11	12	12	13	13	14	14	15	15

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	94	6
4	94	6
5	94	6
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	92	8
13	92	8
14	92	8
15	91	9
16	91	9
17	91	9
18	91	9
19	90	10
20	90	10
21	90	10
22	89	11
23	89	11
24	88	12
25	88	12
26	87	13
27	87	13
28	86	14
29	86	14
30	85	15
31	85	15

Wind in March

Winds average 19 km/h in March.

Across March, daily wind ranges from about 19 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	20	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	20	light breeze
2	19	light breeze
3	19	light breeze
4	19	light breeze
5	19	light breeze
6	19	light breeze
7	19	light breeze
8	19	light breeze
9	19	light breeze
10	19	light breeze
11	19	light breeze
12	19	light breeze
13	19	light breeze
14	19	light breeze
15	19	light breeze
16	19	light breeze
17	19	light breeze
18	19	light breeze
19	19	light breeze
20	19	light breeze
21	19	light breeze
22	19	light breeze
23	19	light breeze
24	19	light breeze
25	19	light breeze
26	19	light breeze
27	19	light breeze
28	19	light breeze
29	19	light breeze
30	19	light breeze
31	19	light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 06 min at the start of March to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over March. Sunrise moves from 7:44 AM to 6:59 AM, and sunset from 6:49 PM to 7:18 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	11.1	11.1	11.2	11.2	11.3	11.3	11.3	11.4	11.4	11.5	11.5	11.5	11.6	11.6	11.7	11.7	11.7	11.8	11.8	11.9	11.9	11.9	12.0	12.0	12.1	12.1	12.2	12.2	12.2	12.3	12.3
Sunrise (AM)	7:44	7:43	7:41	7:40	7:38	7:37	7:36	7:34	7:33	7:31	7:30	7:28	7:27	7:25	7:24	7:22	7:21	7:19	7:18	7:16	7:14	7:13	7:11	7:10	7:08	7:07	7:05	7:04	7:02	7:00	6:59
Sunset (PM)	6:49	6:50	6:51	6:52	6:53	6:54	6:55	6:56	6:57	6:58	6:59	7:00	7:01	7:02	7:03	7:04	7:05	7:06	7:07	7:08	7:09	7:10	7:11	7:12	7:13	7:14	7:14	7:15	7:16	7:17	7:18

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.1	7:44	6:49
2	11.1	7:43	6:50
3	11.2	7:41	6:51
4	11.2	7:40	6:52
5	11.3	7:38	6:53
6	11.3	7:37	6:54
7	11.3	7:36	6:55
8	11.4	7:34	6:56
9	11.4	7:33	6:57
10	11.5	7:31	6:58
11	11.5	7:30	6:59
12	11.5	7:28	7:00
13	11.6	7:27	7:01
14	11.6	7:25	7:02
15	11.7	7:24	7:03
16	11.7	7:22	7:04
17	11.7	7:21	7:05
18	11.8	7:19	7:06
19	11.8	7:18	7:07
20	11.9	7:16	7:08
21	11.9	7:14	7:09
22	11.9	7:13	7:10
23	12.0	7:11	7:11
24	12.0	7:10	7:12
25	12.1	7:08	7:13
26	12.1	7:07	7:14
27	12.2	7:05	7:14
28	12.2	7:04	7:15
29	12.2	7:02	7:16
30	12.3	7:00	7:17
31	12.3	6:59	7:18

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 5.02 kWh/m².

For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 7.67 kWh/m² in June across the year — March's 5.02 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	4.3	4.4	4.4	4.5	4.5	4.6	4.6	4.7	4.7	4.8	4.8	4.9	4.9	5.0	5.0	5.0	5.1	5.1	5.2	5.2	5.3	5.3	5.3	5.4	5.5	5.5	5.5	5.6	5.7	5.7	5.8
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.3	Bright
2	4.4	Bright
3	4.4	Bright
4	4.5	Bright
5	4.5	Bright
6	4.6	Bright
7	4.6	Bright
8	4.7	Bright
9	4.7	Bright
10	4.8	Bright
11	4.8	Bright
12	4.9	Bright
13	4.9	Bright
14	5.0	Bright
15	5.0	Bright
16	5.0	Bright
17	5.1	Bright
18	5.1	Bright
19	5.2	Bright
20	5.2	Bright
21	5.3	Bright
22	5.3	Bright
23	5.3	Bright
24	5.4	Bright
25	5.5	Bright
26	5.5	Bright
27	5.5	Bright
28	5.6	Bright
29	5.7	Bright
30	5.7	Bright
31	5.8	Bright

Planning a trip in March

Is March a good time to visit La Unión?

Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.5

Sightseeing

9th-best month of the year

0.2

Beach & pool

10th-best month of the year

March is a reasonable time to visit La Unión for sightseeing.

What to pack for La Unión in March

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

In March, La Unión sees daytime highs around 15°C and nights near 13°C. Worth packing: a warm layer and sun protection. About 4 days see rain.

a warm layersun protection

Sea temperature near La Unión in March

The nearest coast averages about 15°C in March — 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 March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 6 — 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

Location & terrain

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.

3 km

346 m

grassland 33%

16 km

481 m

water 48%

80 km

1,554 m

water 45%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← February La Unión year-round climate April →Best places to visit in March

March weather nearby: Atamaría 7.0 km · Cartagena 10 km · Barrio de Peral 10 km · Los Alcázares 14 km · Torre-Pacheco 15 km · San Javier 21 km · San Pedro del Pinatar 25 km · Pilar de la Horadada 28 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	15	12
2	15	12
3	15	13
4	15	13
5	15	13
6	15	13
7	15	13
8	15	13
9	15	13
10	15	13
11	15	13
12	15	13
13	15	13
14	15	13
15	15	13
16	15	13
17	15	13
18	15	13
19	15	13
20	15	13
21	15	13
22	15	13
23	16	13
24	16	13
25	16	14
26	16	14
27	16	14
28	16	14
29	16	14
30	16	14
31	16	14

	Clearer (%)	Cloudier (%)
1	68	32
2	68	32
3	68	32
4	69	31
5	69	31
6	69	31
7	69	31
8	69	31
9	70	30
10	70	30
11	70	30
12	70	30
13	71	29
14	71	29
15	71	29
16	70	30
17	70	30
18	70	30
19	69	31
20	69	31
21	68	32
22	68	32
23	68	32
24	68	32
25	68	32
26	68	32
27	68	32
28	69	31
29	70	30
30	70	30
31	70	30

	Rain chance (%)
1	16
2	16
3	15
4	15
5	15
6	15
7	15
8	15
9	14
10	14
11	14
12	13
13	13
14	13
15	13
16	14
17	14
18	14
19	14
20	14
21	14
22	13
23	13
24	13
25	13
26	13
27	12
28	12
29	12
30	12
31	11

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	94	6
4	94	6
5	94	6
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	92	8
13	92	8
14	92	8
15	91	9
16	91	9
17	91	9
18	91	9
19	90	10
20	90	10
21	90	10
22	89	11
23	89	11
24	88	12
25	88	12
26	87	13
27	87	13
28	86	14
29	86	14
30	85	15
31	85	15

	Avg high (°C)	Avg low (°C)
1	15	12
2	15	12
3	15	13
4	15	13
5	15	13
6	15	13
7	15	13
8	15	13
9	15	13
10	15	13
11	15	13
12	15	13
13	15	13
14	15	13
15	15	13
16	15	13
17	15	13
18	15	13
19	15	13
20	15	13
21	15	13
22	15	13
23	16	13
24	16	13
25	16	14
26	16	14
27	16	14
28	16	14
29	16	14
30	16	14
31	16	14

	Clearer (%)	Cloudier (%)
1	68	32
2	68	32
3	68	32
4	69	31
5	69	31
6	69	31
7	69	31
8	69	31
9	70	30
10	70	30
11	70	30
12	70	30
13	71	29
14	71	29
15	71	29
16	70	30
17	70	30
18	70	30
19	69	31
20	69	31
21	68	32
22	68	32
23	68	32
24	68	32
25	68	32
26	68	32
27	68	32
28	69	31
29	70	30
30	70	30
31	70	30

	Rain chance (%)
1	16
2	16
3	15
4	15
5	15
6	15
7	15
8	15
9	14
10	14
11	14
12	13
13	13
14	13
15	13
16	14
17	14
18	14
19	14
20	14
21	14
22	13
23	13
24	13
25	13
26	13
27	12
28	12
29	12
30	12
31	11

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	94	6
4	94	6
5	94	6
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	92	8
13	92	8
14	92	8
15	91	9
16	91	9
17	91	9
18	91	9
19	90	10
20	90	10
21	90	10
22	89	11
23	89	11
24	88	12
25	88	12
26	87	13
27	87	13
28	86	14
29	86	14
30	85	15
31	85	15

	Avg high (°C)	Avg low (°C)
1	15	12
2	15	12
3	15	13
4	15	13
5	15	13
6	15	13
7	15	13
8	15	13
9	15	13
10	15	13
11	15	13
12	15	13
13	15	13
14	15	13
15	15	13
16	15	13
17	15	13
18	15	13
19	15	13
20	15	13
21	15	13
22	15	13
23	16	13
24	16	13
25	16	14
26	16	14
27	16	14
28	16	14
29	16	14
30	16	14
31	16	14

	Clearer (%)	Cloudier (%)
1	68	32
2	68	32
3	68	32
4	69	31
5	69	31
6	69	31
7	69	31
8	69	31
9	70	30
10	70	30
11	70	30
12	70	30
13	71	29
14	71	29
15	71	29
16	70	30
17	70	30
18	70	30
19	69	31
20	69	31
21	68	32
22	68	32
23	68	32
24	68	32
25	68	32
26	68	32
27	68	32
28	69	31
29	70	30
30	70	30
31	70	30

	Rain chance (%)
1	16
2	16
3	15
4	15
5	15
6	15
7	15
8	15
9	14
10	14
11	14
12	13
13	13
14	13
15	13
16	14
17	14
18	14
19	14
20	14
21	14
22	13
23	13
24	13
25	13
26	13
27	12
28	12
29	12
30	12
31	11

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	94	6
4	94	6
5	94	6
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	92	8
13	92	8
14	92	8
15	91	9
16	91	9
17	91	9
18	91	9
19	90	10
20	90	10
21	90	10
22	89	11
23	89	11
24	88	12
25	88	12
26	87	13
27	87	13
28	86	14
29	86	14
30	85	15
31	85	15