Metapán weather in August

In August, Metapán sees average daytime highs of 31°C and overnight lows near 21°C, with 87 mm of rain across 16.9 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 10% of the time in August, and the air most often feels muggy.

Daylight stretches from about 12 h 36 min at the start of August to 12 h 18 min by month's end. Set against the rest of the year, August is Metapán's 10th-clearest and 8th-windiest month. For the whole year in context, see Metapán's year-round climate.

Daytime high
31°
4th warmest
Overnight low
21°
10th coldest
Rainfall
87 mm
16.9 wet days
Daylight
12 h 30 min
5:47 AM – 6:16 PM
Cloud cover
73%
10th clearest
Wind
6 km/h
8th windiest
Solar energy
5.53 kWh/m²
Travel score
3.5
out of 10

Metapán is district in Northern Santa Ana, El Salvador.

Density
29/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical August day in Metapán reaches about 31°C in the afternoon and slips back to 21°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, August runs on par with July and about 1°C warmer than September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13221
23221
33221
43221
53221
63221
73221
83221
93221
103121
113121
123121
133121
143121
153121
163121
173121
183121
193121
203121
213121
223121
233121
243121
253121
263121
273121
283121
293121
303121
313121

How August really feels in Metapán

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

Metapán weather by month

How August compares with the rest of the year at a glance. August is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 18°00.111.26.9
Feb31° / 19°00.111.55.9
Mar32° / 20°20.611.94.9
Apr33° / 21°174.112.33.9
May32° / 22°9014.612.73.4
Jun31° / 21°11218.712.83.5
Jul31° / 21°7714.412.83.8
Aug31° / 21°8716.912.53.5
Sep31° / 21°15220.512.13.4
Oct30° / 21°12215.411.74.4
Nov29° / 20°223.511.36.2
Dec30° / 19°30.611.26.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 18% of August, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23268
33169
43169
53070
63070
73070
83070
93070
102971
112971
122971
132971
142971
152971
162971
172971
182872
192872
202872
212872
222773
232773
242773
252674
262575
272575
282476
292476
302377
312377

Chance of precipitation in August

Any precipitation

Metapán gets around 87 mm of rain over 16.9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 55% and peaks near 61% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
147
247
347
448
549
649
750
850
951
1052
1152
1253
1354
1454
1555
1655
1756
1856
1957
2057
2158
2258
2358
2459
2559
2659
2760
2860
2961
3061
3161

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 90% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
112862
212862
311872
411872
511872
610882
710882
810882
99892
109892
118902
128902
138902
148902
158902
167912
177912
187921
197921
207921
218911
228911
238911
248911
258902
268902
278902
288911
298911
308911
318911

Wind in August

Winds average 6 km/h in August.

Across August, daily wind ranges from about 5 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 36 min at the start of August to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over August. Sunrise moves from 5:45 AM to 5:49 AM, and sunset from 6:23 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:456:23
212.65:456:23
312.65:456:22
412.65:456:22
512.65:456:22
612.65:466:21
712.65:466:21
812.65:466:20
912.65:466:20
1012.65:466:19
1112.55:476:19
1212.55:476:18
1312.55:476:18
1412.55:476:17
1512.55:476:17
1612.55:476:16
1712.55:486:16
1812.55:486:15
1912.45:486:15
2012.45:486:14
2112.45:486:13
2212.45:486:13
2312.45:486:12
2412.45:486:11
2512.45:496:11
2612.45:496:10
2712.35:496:09
2812.35:496:09
2912.35:496:08
3012.35:496:07
3112.35:496:07

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.53 kWh/m².

For context, solar energy here swings from a low near 4.63 kWh/m² to a high of 6.22 kWh/m² in March across the year — August's 5.53 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in August

Hazard calendar for Metapán

In seasonPeak

In August, Metapán sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Metapán's rainy season runs May–October, when most of the year's rain falls.

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

Is August a good time to visit Metapán?

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

3.5
Sightseeing
9th-best month of the year
5.3
Beach & pool
10th-best month of the year

August is a weaker month for outdoor sightseeing in Metapán.

What to pack for Metapán in August

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

In August, Metapán sees daytime highs around 31°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Metapán in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Metapán peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 highApr 12UV 14Dec 13UV 9
UV index (midday)Level
Jan10Very high
Feb13Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov9Very high
Dec9Very high

Air quality in Metapán in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Metapán is worst in April — around 33 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 2133 µg/m³Dec 1716 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb18Moderate
Mar21Moderate
Apr33Moderate
May31Moderate
Jun21Moderate
Jul23Moderate
Aug20Moderate
Sep19Moderate
Oct18Moderate
Nov16Moderate
Dec16Moderate
Location & terrain

Where is Metapán?

Metapán sits at 14.3°N, 89.5°W, 471 m above sea level, in El Salvador. The nearest listed city is Esquipulas, 28 km away.

EsquipulasAsunción MitaSanta AnaChalchuapaJutiapaAguilares

Topography around Metapán

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

Within 3 km, the terrain around Metapán has only modest variations in elevation — a maximum elevation change of 230 m around an average of 520 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,059 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,620 m.

The land around Metapán is covered by grassland (46%) and trees (32%) within 3 km, trees (46%) and grassland (31%) within 16 km, and trees (62%) and grassland (24%) within 80 km.

3 km
230 m
16 km
2,059 m
80 km
2,620 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Esquipulas 28 km · Asunción Mita 28 km · Santa Ana 40 km · San Luis Jilotepeque 46 km · Chalchuapa 46 km · Jutiapa 47 km · Aguilares 50 km · Chiquimula 53 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 Metapán (14.3333°, -89.45°, elevation 471 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. 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).