Puerto El Triunfo weather in September

In September, Puerto El Triunfo sees average daytime highs of 30°C and overnight lows near 25°C, with 342 mm of rain across 26.6 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 2nd-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 9% of the time in September, and the air most often feels miserable.

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 Puerto El Triunfo's 11th-clearest and 7th-windiest month. For the whole year in context, see Puerto El Triunfo's year-round climate.

Daytime high
30°
11th warmest
Overnight low
25°
7th coldest
Rainfall
342 mm
26.6 wet days
Daylight
12 h 06 min
5:46 AM – 5:51 PM
Cloud cover
76%
11th clearest
Wind
6 km/h
7th windiest
Solar energy
5.66 kWh/m²
Travel score
3.0
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

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

A typical September day in Puerto El Triunfo reaches about 30°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, September runs about 1°C cooler than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13025
23025
33025
43025
53025
63025
73025
83025
93025
103025
113025
123025
133025
143025
153025
163025
173025
183025
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024

How September really feels in Puerto El Triunfo

Once humidity and wind are folded in, September 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 September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Puerto El Triunfo weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°10.311.35.6
Feb32° / 24°20.411.65.3
Mar32° / 24°71.811.94.9
Apr32° / 25°298.112.34.1
May31° / 25°22022.312.63.1
Jun31° / 25°28823.912.83.0
Jul31° / 25°19819.412.73.4
Aug31° / 25°27323.312.43.2
Sep30° / 25°34226.612.13.0
Oct30° / 24°34924.611.73.5
Nov30° / 24°71911.45.1
Dec31° / 23°41.211.25.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12674
22674
32674
42674
52674
62674
72674
82575
92575
102575
112377
122377
132377
142278
152278
162179
172179
182179
192179
202080
212080
221981
231981
241981
251981
261882
271981
282080
292080
302080

Chance of precipitation in September

Any precipitation

Puerto El Triunfo gets around 342 mm of rain over 26.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 89% and peaks near 92% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
185
285
385
485
585
685
785
886
986
1086
1187
1287
1387
1488
1588
1689
1789
1890
1991
2091
2192
2292
2392
2492
2592
2692
2792
2891
2991
3090

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
13565
23565
33565
43565
53565
63466
73466
83466
93466
103565
113565
123565
133664
143664
153664
163763
173763
183862
193862
203961
214060
224060
234159
244258
254258
264258
274258
284357
294357
304357

Wind in September

Winds average 6 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
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
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 5:46 AM to 5:47 AM, and sunset from 6:02 PM to 5:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:466:02
212.25:466:01
312.25:466:00
412.25:466:00
512.25:465:59
612.25:465:58
712.25:465:57
812.25:465:57
912.25:465:56
1012.15:465:55
1112.15:465:54
1212.15:465:54
1312.15:465:53
1412.15:465:52
1512.15:465:51
1612.15:465:51
1712.15:465:50
1812.05:465:49
1912.05:465:48
2012.05:465:48
2112.05:465:47
2212.05:465:46
2312.05:465:45
2412.05:465:45
2512.05:465:44
2611.95:465:43
2711.95:475:43
2811.95:475:42
2911.95:475:41
3011.95:475:40

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.66 kWh/m².

For context, solar energy here swings from a low near 5.23 kWh/m² to a high of 6.75 kWh/m² in March across the year — September's 5.66 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.0Bright
66.0Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.8Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.7Bright
175.6Bright
185.6Bright
195.6Bright
205.5Bright
215.5Bright
225.5Bright
235.4Bright
245.4Bright
255.4Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in September

Hazard calendar for Puerto El Triunfo

In seasonPeak

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

Puerto El Triunfo sits in the Atlantic hurricane belt; the season peaks August–October.

Puerto El Triunfo'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 Puerto El Triunfo?

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

3.0
Sightseeing
11th-best month of the year
4.1
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Puerto El Triunfo.

What to pack for Puerto El Triunfo in September

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

In September, Puerto El Triunfo sees daytime highs around 30°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Puerto El Triunfo 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 19 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
Feb28Tropical
Mar28Tropical
Apr29Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Puerto El Triunfo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Puerto El Triunfo 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
Jul12Extreme
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Puerto El Triunfo 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 Puerto El Triunfo is worst in April — around 34 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (January, 13 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 2234 µg/m³Jan 1113 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar22Moderate
Apr34Moderate
May32Moderate
Jun21Moderate
Jul25Moderate
Aug20Moderate
Sep18Moderate
Oct17Moderate
Nov16Moderate
Dec13Moderate
Location & terrain

Where is Puerto El Triunfo?

Puerto El Triunfo sits at 13.3°N, 88.5°W, 15 m above sea level, in El Salvador. The nearest listed city is Usulután, 14 km away.

Santiago de MaríaSan Rafael OrienteZacatecolucaSan MiguelSan VicenteCojutepequeSensuntepeque

Topography around Puerto El Triunfo

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

Within 3 km, the terrain around Puerto El Triunfo has only modest variations in elevation — a maximum elevation change of 44 m around an average of 15 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 929 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,143 m.

The land around Puerto El Triunfo is covered by cropland (34%) within 3 km, water (26%), grassland (24%) and trees (23%) within 16 km, and trees (38%) and water (35%) within 80 km.

3 km
44 m
16 km
929 m
80 km
2,143 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Usulután 14 km · Santiago de María 24 km · San Rafael Oriente 24 km · Zacatecoluca 43 km · San Miguel 46 km · San Vicente 47 km · Cojutepeque 64 km · Sensuntepeque 66 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 Puerto El Triunfo (13.2833°, -88.55°, elevation 15 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).