Acajutla weather in May

In May, Acajutla sees average daytime highs of 29°C and overnight lows near 26°C, with 204 mm of rain across 23.7 wet days and about 12.6 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 20% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 42 min by month's end. Set against the rest of the year, May is Acajutla's 7th-clearest and 10th-windiest month. For the whole year in context, see Acajutla's year-round climate.

Daytime high
29°
7th warmest
Overnight low
26°
12th coldest
Rainfall
204 mm
23.7 wet days
Daylight
12 h 36 min
5:37 AM – 6:14 PM
Cloud cover
68%
7th clearest
Wind
8 km/h
10th windiest
Solar energy
5.88 kWh/m²
Travel score
3.7
out of 10

Acajutla is district in Western Sonsonate, El Salvador.

Density
137/km²
people per km²

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical May day in Acajutla reaches about 29°C in the afternoon and slips back to 26°C overnight — a 4°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, May runs on par with April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282926
292926
302926
312925

How May really feels in Acajutla

Once humidity and wind are folded in, May averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Acajutla weather by month

How May compares with the rest of the year at a glance. May is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°30.711.37.1
Feb30° / 25°30.711.56.9
Mar30° / 25°113.111.96.4
Apr30° / 26°379.912.35.2
May29° / 26°20423.712.63.7
Jun29° / 26°25526.412.83.2
Jul29° / 26°22425.512.73.4
Aug29° / 26°25426.912.53.3
Sep29° / 25°32828.312.13.2
Oct29° / 25°30925.211.73.7
Nov29° / 25°6710.511.45.5
Dec30° / 25°71.911.26.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26139
36139
45941
55743
65644
75545
85347
95149
104951
114654
124456
134258
144060
153763
163565
173466
183268
193070
202872
212773
222674
232476
242377
252278
262278
272179
282080
291981
301981
311882

Chance of precipitation in May

Any precipitation

Acajutla gets around 204 mm of rain over 23.7 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 75% and peaks near 87% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
156
258
360
461
562
664
765
866
967
1069
1170
1271
1372
1474
1575
1677
1778
1880
1981
2082
2183
2284
2385
2485
2586
2686
2786
2886
2987
3087
3187

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
145739
235740
335542
435443
525345
625246
725147
825048
925049
1024949
1124850
1224850
1324751
1424751
1524652
1624553
1714554
1814554
1914455
2014554
2114554
2214554
2314653
2414653
2514752
2614752
2704852
2804852
2904852
3004852
3104852

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 5:42 AM to 5:35 AM, and sunset from 6:11 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:426:11
212.55:426:11
312.55:416:11
412.55:416:11
512.55:406:12
612.55:406:12
712.55:406:12
812.65:396:12
912.65:396:13
1012.65:396:13
1112.65:386:13
1212.65:386:13
1312.65:386:14
1412.65:376:14
1512.65:376:14
1612.65:376:14
1712.65:376:15
1812.65:366:15
1912.75:366:15
2012.75:366:15
2112.75:366:16
2212.75:366:16
2312.75:356:16
2412.75:356:17
2512.75:356:17
2612.75:356:17
2712.75:356:18
2812.75:356:18
2912.75:356:18
3012.75:356:18
3112.75:356:19

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.88 kWh/m².

For context, solar energy here swings from a low near 4.96 kWh/m² to a high of 6.57 kWh/m² in April across the year — May's 5.88 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.2Intense
106.2Intense
116.2Intense
126.1Intense
136.1Intense
146.0Intense
156.0Bright
165.9Bright
175.9Bright
185.8Bright
195.8Bright
205.7Bright
215.7Bright
225.7Bright
235.6Bright
245.6Bright
255.5Bright
265.5Bright
275.5Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in May

Hazard calendar for Acajutla

In seasonPeak

In May, Acajutla sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

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

Acajutla's monsoon runs May–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 May a good time to visit Acajutla?

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

3.7
Sightseeing
7th-best month of the year
4.9
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Acajutla.

What to pack for Acajutla in May

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

In May, Acajutla sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Acajutla in May

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

The sea offshore 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
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Acajutla in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Acajutla peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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 24UV 13Nov 23UV 9
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Acajutla in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Acajutla is worst in May — around 31 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (January, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1230 µg/m³Jan 1914 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar17Moderate
Apr28Moderate
May31Moderate
Jun21Moderate
Jul23Moderate
Aug21Moderate
Sep20Moderate
Oct19Moderate
Nov19Moderate
Dec15Moderate
Location & terrain

Where is Acajutla?

Acajutla sits at 13.6°N, 89.8°W, 26 m above sea level, in El Salvador. The nearest listed city is Sonsonate, 18 km away.

SonsonateSonzacateIzalcoAhuachapanChalchuapaSanta AnaLa LibertadSanta Tecla

Topography around Acajutla

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

Within 3 km, the terrain around Acajutla has only modest variations in elevation — a maximum elevation change of 63 m around an average of 22 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 358 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,351 m.

The land around Acajutla is covered by trees (29%), water (26%) and grassland (23%) within 3 km, water (45%), trees (24%) and grassland (22%) within 16 km, and trees (37%) and water (37%) within 80 km.

3 km
63 m
16 km
358 m
80 km
2,351 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
May weather nearby: Sonsonate 18 km · Sonzacate 20 km · Izalco 24 km · Ahuachapan 37 km · Chalchuapa 47 km · Santa Ana 53 km · La Libertad 56 km · Santa Tecla 60 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 Acajutla (13.5928°, -89.8275°, elevation 26 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).