La Libertad weather in September

In September, La Libertad sees average daytime highs of 28°C and overnight lows near 24°C, with 323 mm of rain across 28.4 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 6% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is La Libertad's 11th-clearest and 9th-windiest month. For the whole year in context, see La Libertad's year-round climate.

Daytime high
28°
11th warmest
Overnight low
24°
7th coldest
Rainfall
323 mm
28.4 wet days
Daylight
12 h 06 min
5:49 AM – 5:54 PM
Cloud cover
81%
11th clearest
Wind
7 km/h
9th windiest
Solar energy
5.07 kWh/m²
Travel score
3.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in La Libertad reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, September runs about 1°C cooler than August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12824
22824
32824
42824
52824
62824
72824
82824
92824
102824
112824
122824
132824
142824
152824
162824
172824
182824
192824
202823
212823
222823
232823
242823
252823
262823
272823
282823
292823
302823

How September really feels in La Libertad

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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

La Libertad weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°20.511.37.1
Feb30° / 23°20.411.66.9
Mar30° / 23°10311.96.3
Apr30° / 24°481112.35.2
May29° / 24°23925.312.63.7
Jun28° / 24°25426.212.83.4
Jul29° / 24°19522.512.73.8
Aug29° / 24°25026.112.43.5
Sep28° / 24°32328.412.13.4
Oct28° / 23°28324.511.74.1
Nov29° / 23°568.911.45.9
Dec29° / 23°71.411.27.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 83%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12080
22080
32080
42080
51981
61981
71981
81981
91882
101882
111882
121882
131783
141783
151783
161783
171684
181585
191585
201585
211585
221486
231486
241486
251486
261486
271585
281585
291585
301684

Chance of precipitation in September

Any precipitation

La Libertad gets around 323 mm of rain over 28.4 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 94% and peaks near 97% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
191
292
392
492
592
692
792
892
993
1093
1193
1293
1393
1493
1594
1694
1794
1895
1995
2096
2196
2296
2396
2497
2596
2696
2796
2896
2995
3095

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 99% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
10100
20100
30100
40100
50100
60100
70100
80100
90100
100100
110100
120100
130100
140100
150100
160100
170100
180100
190100
200100
210100
220100
23199
24199
25199
26199
27199
28199
29199
30199

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over September. Sunrise moves from 5:49 AM to 5:50 AM, and sunset from 6:05 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:496:05
212.35:496:04
312.25:496:03
412.25:496:03
512.25:496:02
612.25:496:01
712.25:496:01
812.25:496:00
912.25:495:59
1012.25:495:58
1112.15:495:58
1212.15:495:57
1312.15:495:56
1412.15:495:55
1512.15:495:55
1612.15:495:54
1712.15:495:53
1812.05:495:52
1912.05:495:52
2012.05:495:51
2112.05:495:50
2212.05:495:49
2312.05:505:49
2412.05:505:48
2512.05:505:47
2611.95:505:46
2711.95:505:46
2811.95:505:45
2911.95:505:44
3011.95:505:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.07 kWh/m².

For context, solar energy here swings from a low near 4.87 kWh/m² to a high of 6.36 kWh/m² in March across the year — September's 5.07 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.1Bright
165.1Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
214.9Bright
224.9Bright
234.9Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for La Libertad

In seasonPeak

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

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

La Libertad'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 September a good time to visit La Libertad?

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

3.4
Sightseeing
11th-best month of the year
3.8
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in La Libertad.

What to pack for La Libertad in September

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

In September, La Libertad sees daytime highs around 28°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near La Libertad in September

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

The sea at the nearest coast (about 14 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
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr29Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in La Libertad in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (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 Libertad peaks around March 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 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 21UV 13Dec 12UV 9
UV index (midday)Level
Jan9Very high
Feb13Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in La Libertad in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in La Libertad is worst in April — around 43 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (September, 26 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModeratePoorApr 1942 µg/m³Sep 1026 µg/m³
PM2.5 (µg/m³)Level
Jan34Moderate
Feb35Moderate
Mar35Poor
Apr43Poor
May40Poor
Jun27Moderate
Jul30Moderate
Aug27Moderate
Sep26Moderate
Oct29Moderate
Nov35Moderate
Dec36Poor
Location & terrain

Where is La Libertad?

La Libertad sits at 13.5°N, 89.3°W, 13 m above sea level, in El Salvador. The nearest listed city is Antiguo Cuscatlán, 21 km away.

Antiguo CuscatlánSanta TeclaSan MarcosSan SalvadorMejicanosAyutuxtepequeCuscatancingoDelgado

Topography around La Libertad

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

Within 3 km, the terrain around La Libertad has only modest variations in elevation — a maximum elevation change of 247 m around an average of 51 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,020 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,353 m.

The land around La Libertad is covered by trees (44%) and water (42%) within 3 km, water (45%) and trees (44%) within 16 km, and trees (40%) and water (34%) within 80 km.

3 km
247 m
16 km
1,020 m
80 km
2,353 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Antiguo Cuscatlán 21 km · Santa Tecla 21 km · San Marcos 24 km · San Salvador 27 km · Mejicanos 30 km · Ayutuxtepeque 30 km · Cuscatancingo 31 km · Delgado 31 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 Libertad (13.4883°, -89.3222°, elevation 13 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).