San Miguel weather in August

In August, San Miguel sees average daytime highs of 33°C and overnight lows near 23°C, with 271 mm of rain across 22.5 wet days and about 12.4 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 15% of the time in August, and the air most often feels oppressive.

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 San Miguel's 8th-clearest and 9th-windiest month. For the whole year in context, see San Miguel's year-round climate.

Daytime high
33°
8th warmest
Overnight low
23°
8th coldest
Rainfall
271 mm
22.5 wet days
Daylight
12 h 30 min
5:43 AM – 6:10 PM
Cloud cover
70%
8th clearest
Wind
4 km/h
9th windiest
Solar energy
6.29 kWh/m²
Travel score
2.6
out of 10

San Miguel is city in El Salvador.

Density
416/km²
people per km²
Founded
1530

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 33°C through the month.

A typical August day in San Miguel reaches about 33°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 35°C. Set against its neighbours, August runs on par with July and about 1°C warmer than September.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13323
23323
33323
43323
53323
63323
73323
83323
93323
103323
113323
123323
133323
143323
153323
163323
173323
183323
193223
203223
213223
223223
233223
243223
253223
263223
273223
283223
293223
303223
313223

How August really feels in San Miguel

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.

San Miguel weather by month

How August compares with the rest of the year at a glance. August is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 21°10.411.34.1
Feb35° / 22°10.311.63.3
Mar36° / 23°92.111.92.8
Apr35° / 24°449.212.32.4
May33° / 24°25822.812.62.3
Jun32° / 23°29123.612.82.6
Jul33° / 23°19518.912.72.8
Aug33° / 23°27122.512.42.6
Sep31° / 23°34326.712.12.6
Oct31° / 22°3042411.73.1
Nov31° / 21°618.811.44.5
Dec33° / 21°61.311.24.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 66%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
33961
43961
53862
63862
73961
83862
93862
103763
113763
123664
133664
143664
153565
163565
173565
183367
193367
203367
213268
223169
233070
243070
252971
262872
272872
282773
292773
302674
312674

Chance of precipitation in August

Any precipitation

San Miguel gets around 271 mm of rain over 22.5 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 73% and peaks near 82% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
162
263
364
464
565
666
767
868
969
1070
1170
1271
1372
1472
1573
1673
1773
1874
1974
2075
2175
2276
2376
2477
2578
2678
2779
2880
2981
3081
3182

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 84% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1213796
2213787
3112807
4111817
5111808
6110818
7110818
8110818
919828
1019828
1119828
1209838
1309838
1409847
1509847
1609847
1709847
1809847
1909847
2008857
2108857
2207867
2307867
2406877
2506877
2605878
2704897
2804897
2903907
3003907
3102917

Wind in August

Winds average 4 km/h in August.

Across August, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

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 5:41 AM to 5:44 AM, and sunset from 6:17 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:416:17
212.65:416:17
312.65:416:16
412.65:416:16
512.65:416:15
612.65:426:15
712.55:426:15
812.55:426:14
912.55:426:14
1012.55:426:13
1112.55:436:13
1212.55:436:12
1312.55:436:12
1412.55:436:11
1512.55:436:11
1612.55:436:10
1712.45:436:10
1812.45:436:09
1912.45:446:09
2012.45:446:08
2112.45:446:08
2212.45:446:07
2312.45:446:06
2412.45:446:06
2512.35:446:05
2612.35:446:04
2712.35:446:04
2812.35:446:03
2912.35:446:02
3012.35:446:02
3112.35:446:01

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.29 kWh/m².

For context, solar energy here swings from a low near 5.17 kWh/m² to a high of 6.68 kWh/m² in March across the year — August's 6.29 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.0Intense
316.0Intense
Planning a trip in August

Hazard calendar for San Miguel

In seasonPeak

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

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

San Miguel'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 August a good time to visit San Miguel?

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

2.6
Sightseeing
8th-best month of the year
4.5
Beach & pool
9th-best month of the year

August is a weaker month for outdoor sightseeing in San Miguel.

What to pack for San Miguel in August

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

In August, San Miguel sees daytime highs around 33°C and nights near 23°C. Pack light clothes, rain gear and sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near San Miguel in August

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

The sea at the nearest coast (about 40 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 San Miguel in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 San Miguel peaks around April 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 10UV 13Dec 15UV 9
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in San Miguel 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 San Miguel 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 San Miguel?

San Miguel sits at 13.5°N, 88.2°W, 130 m above sea level, in El Salvador. The nearest listed city is San Rafael Oriente, 21 km away.

San Rafael OrienteSan Francisco GoteraSantiago de MaríaUsulutánLa UniónPuerto El TriunfoColomoncaguaLangue

Topography around San Miguel

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

Within 3 km, the terrain around San Miguel has only modest variations in elevation — a maximum elevation change of 126 m around an average of 128 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,078 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,174 m.

The land around San Miguel is covered by artificial surfaces (48%) and trees (36%) within 3 km, trees (51%) and grassland (38%) within 16 km, and trees (45%), water (28%) and grassland (20%) within 80 km.

3 km
126 m
16 km
2,078 m
80 km
2,174 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
August weather nearby: San Rafael Oriente 21 km · San Francisco Gotera 25 km · Santiago de María 31 km · Usulután 32 km · La Unión 40 km · Puerto El Triunfo 46 km · Colomoncagua 53 km · Langue 59 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 San Miguel (13.4826°, -88.1821°, elevation 130 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).