La Unión weather in June

In June, La Unión sees average daytime highs of 30°C and overnight lows near 27°C, with 313 mm of rain across 20.9 wet days and about 12.8 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 14% of the time in June, and the air most often feels oppressive.

Daylight stretches from about 12 h 42 min at the start of June to 12 h 48 min by month's end. Set against the rest of the year, June is La Unión's 12th-clearest and 10th-windiest month. For the whole year in context, see La Unión's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
27°
7th coldest
Rainfall
313 mm
20.9 wet days
Daylight
12 h 48 min
5:28 AM – 6:15 PM
Cloud cover
74%
12th clearest
Wind
9 km/h
10th windiest
Solar energy
5.9 kWh/m²
Travel score
3.8
out of 10

La Unión is city in El Salvador.

Density
186/km²
people per km²
Founded
1854

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical June day in La Unión reaches about 30°C in the afternoon and slips back to 27°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, June runs on par with May and on par with July.

25°28°30°33°35°151015202530
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
153027
163027
173027
183027
193027
203027
213027
223027
233027
243027
253027
263027
273027
283027
293027
303027

How June really feels in La Unión

Once humidity and wind are folded in, June averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in June is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

La Unión weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 26°10.411.37.4
Feb29° / 26°20.611.67.4
Mar29° / 27°82.611.97.0
Apr29° / 27°409.912.35.6
May29° / 27°27721.412.64.0
Jun30° / 27°31320.912.83.8
Jul30° / 27°14612.412.74.5
Aug30° / 27°25619.212.44.1
Sep29° / 26°37525.112.13.6
Oct28° / 26°34422.111.74.2
Nov29° / 26°486.711.46.2
Dec29° / 26°30.911.27.2

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in June, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of June, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12476
22476
32476
42476
52476
62476
72575
82575
92674
102674
112674
122674
132872
142971
152971
162872
172872
182872
192971
203070
213070
223070
233070
243070
253070
263070
273169
283367
293367
303367

Chance of precipitation in June

Any precipitation

La Unión gets around 313 mm of rain over 20.9 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 69% and peaks near 82% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
182
282
381
481
580
680
779
878
977
1077
1176
1275
1374
1472
1571
1670
1769
1867
1966
2065
2163
2262
2360
2459
2557
2656
2755
2853
2952
3051

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the oppressive band about 74% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
106733
206733
306634
406634
506634
606634
706634
806733
906733
1006832
1106931
1207030
1307129
1407228
1507426
1607525
1707624
1807723
1907822
2007921
2108020
2208119
2318118
2418217
2518217
2618316
2718415
2818415
2918514
3018613

Wind in June

Winds average 9 km/h in June.

Across June, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 12 h 42 min at the start of June to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over June. Sunrise moves from 5:27 AM to 5:31 AM, and sunset from 6:11 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:276:11
212.75:276:11
312.75:276:11
412.75:276:12
512.75:276:12
612.85:276:12
712.85:276:13
812.85:276:13
912.85:276:13
1012.85:276:13
1112.85:286:14
1212.85:286:14
1312.85:286:14
1412.85:286:15
1512.85:286:15
1612.85:286:15
1712.85:286:15
1812.85:296:16
1912.85:296:16
2012.85:296:16
2112.85:296:16
2212.85:296:16
2312.85:296:17
2412.85:306:17
2512.85:306:17
2612.85:306:17
2712.85:306:17
2812.85:316:18
2912.85:316:18
3012.85:316:18

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.9 kWh/m².

For context, solar energy here swings from a low near 5.18 kWh/m² to a high of 6.78 kWh/m² in March across the year — June's 5.9 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.8Bright
105.8Bright
115.8Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
166.0Bright
176.0Bright
186.0Bright
196.0Intense
206.0Intense
216.0Intense
226.0Intense
236.0Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.2Intense
Planning a trip in June

Hazard calendar for La Unión

In seasonPeak

In June, La Unión sits inside its atlantic hurricane and monsoon season. The full year is below, with each hazard's peak months called out.

La Unión sits in the Atlantic hurricane belt; the season peaks August–October.

La Unión's monsoon runs August–October, when most of the year's rain falls.

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

Is June a good time to visit La Unión?

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

3.8
Sightseeing
11th-best month of the year
5.0
Beach & pool
11th-best month of the year

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

What to pack for La Unión in June

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

In June, La Unión sees daytime highs around 30°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near La Unión in June

The nearest coast averages about 30°C in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 24 km away) is warmest in August at about 30°C and coldest in January near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Warm
Mar28Tropical
Apr29Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in La Unión in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 13 (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 March 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 20UV 13Dec 14UV 9
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in La Unión in June

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in La Unión is worst in April — around 34 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (January, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 2233 µg/m³Jan 1010 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar20Moderate
Apr34Moderate
May32Moderate
Jun21Moderate
Jul24Moderate
Aug20Moderate
Sep18Moderate
Oct17Moderate
Nov14Moderate
Dec10Good
Location & terrain

Where is La Unión?

La Unión sits at 13.3°N, 87.8°W, 10 m above sea level, in El Salvador. The nearest listed city is Langue, 37 km away.

LangueSan MiguelSan Francisco GoteraSan Rafael OrienteUsulutánSantiago de María

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 only modest variations in elevation — a maximum elevation change of 245 m around an average of 38 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,230 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,074 m.

The land around La Unión is covered by water (43%) and trees (33%) within 3 km, trees (39%) and water (32%) within 16 km, and trees (42%) and water (32%) within 80 km.

3 km
245 m
16 km
1,230 m
80 km
2,074 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
June weather nearby: Langue 37 km · San Miguel 40 km · San Lorenzo 44 km · San Francisco Gotera 49 km · San Rafael Oriente 55 km · Marcovia 58 km · Usulután 65 km · Santiago de María 69 km

El Salvador travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
115 V · 60 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$5,767
2025
Happiness
6.6 / 10
World Happiness, 2025
Homicide rate
7.9
per 100k, 2022
Road deaths
20.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 523
Religion
Roman Catholic 44%Protestant 40%none 16%

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 (13.3392°, -87.8433°, elevation 10 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).