Soyapango weather in December

In December, Soyapango sees average daytime highs of 31°C and overnight lows near 20°C, with 7 mm of rain across 1.4 wet days and about 11.2 hours of daylight. It is the 5th-warmest and 10th-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 75% of the time in December, and the air most often feels humid.

Daylight stretches from about 11 h 12 min at the start of December to 11 h 12 min by month's end. Set against the rest of the year, December is Soyapango's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Soyapango's year-round climate.

Daytime high
31°
5th warmest
Overnight low
20°
2nd coldest
Rainfall
7 mm
1.4 wet days
Daylight
11 h 12 min
6:17 AM – 5:29 PM
Cloud cover
28%
3rd clearest
Wind
8 km/h
2nd windiest
Solar energy
5.23 kWh/m²
Travel score
5.6
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

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

A typical December day in Soyapango reaches about 31°C in the afternoon and slips back to 20°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13120
23120
33120
43120
53120
63120
73120
83120
93120
103120
113120
123120
133120
143120
153120
163120
173120
183120
193120
203120
213120
223120
233120
243120
253120
263120
273220
283220
293220
303220
313220

How December really feels in Soyapango

Once humidity and wind are folded in, December 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

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

Soyapango weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 20°20.611.35.5
Feb33° / 20°20.511.54.9
Mar33° / 21°102.911.94.3
Apr33° / 22°5011.312.33.7
May31° / 22°22224.912.62.9
Jun30° / 22°24826.312.82.9
Jul31° / 22°18622.312.73.1
Aug31° / 22°2302612.52.9
Sep30° / 22°30328.412.12.8
Oct29° / 21°23223.311.73.6
Nov31° / 20°457.611.45.1
Dec31° / 20°71.411.25.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 75% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 12%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27921
38119
48218
58317
68416
78614
88614
98713
108713
118812
128812
138812
148911
159010
169010
179010
189010
19919
20919
21919
22919
23928
24928
25919
26919
27919
28919
29919
309010
318911

Chance of precipitation in December

Any precipitation

Soyapango gets around 7 mm of rain over 1.4 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 5% and peaks near 10% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
110
210
39
48
57
66
76
85
95
105
115
125
135
145
155
164
174
184
194
204
214
224
234
244
254
264
274
283
293
303
313

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 18% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
131649302
231750292
331750282
431752262
531753252
631754242
731754242
831756231
931856221
1041855221
1141955211
1242055201
1342055201
1442155191
1542255181
1642355171
1742454171
1842555160
1942655150
2042755140
2142855130
2242955120
2343054120
2443055110
2553154100
2653154100
275315590
285325490
295325580
306325480
316335380

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 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
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

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

Days grow by about 0 minutes over December. Sunrise moves from 6:09 AM to 6:24 AM, and sunset from 5:24 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:095:24
211.26:095:24
311.26:105:24
411.26:105:24
511.26:115:25
611.26:125:25
711.26:125:25
811.26:135:26
911.26:135:26
1011.26:145:26
1111.26:145:27
1211.26:155:27
1311.26:155:27
1411.26:165:28
1511.26:165:28
1611.26:175:29
1711.26:175:29
1811.26:185:29
1911.26:185:30
2011.26:195:30
2111.26:195:31
2211.26:205:31
2311.26:205:32
2411.26:215:32
2511.26:215:33
2611.26:225:33
2711.26:225:34
2811.26:225:34
2911.26:235:35
3011.26:235:35
3111.26:245:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.23 kWh/m².

For context, solar energy here swings from a low near 4.73 kWh/m² to a high of 6.23 kWh/m² in March across the year — December's 5.23 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in December

Hazard calendar for Soyapango

In seasonPeak

None of Soyapango's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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

Soyapango'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 December a good time to visit Soyapango?

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

5.6
Sightseeing
1st-best month of the year
8.4
Beach & pool
2nd-best month of the year

December is a reasonable time to visit Soyapango for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Soyapango in December

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

In December, Soyapango sees daytime highs around 31°C and nights near 20°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Soyapango in December

The nearest coast averages about 29°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 37 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 Soyapango in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Soyapango 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 Soyapango in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Soyapango 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 Soyapango?

Soyapango sits at 13.7°N, 89.1°W, 634 m above sea level, in El Salvador. The nearest listed city is Delgado, 3.0 km away.

Topography around Soyapango

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

Within 3 km, the terrain around Soyapango has significant variations in elevation — a maximum elevation change of 334 m around an average of 620 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,674 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,703 m.

The land around Soyapango is covered by artificial surfaces (54%) and trees (36%) within 3 km, trees (65%) within 16 km, and trees (48%), water (22%) and grassland (21%) within 80 km.

3 km
334 m
16 km
1,674 m
80 km
2,703 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
December weather nearby: Delgado 3.0 km · Ilopango 3.0 km · Cuscatancingo 5.0 km · Mejicanos 5.0 km · San Salvador 6.0 km · San Marcos 7.0 km · Ayutuxtepeque 7.0 km · Apopa 12 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 Soyapango (13.7102°, -89.1399°, elevation 634 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).