Santiago de Surco weather in December

In December, Santiago de Surco sees average daytime highs of 20°C and overnight lows near 18°C, with 4 mm of rain across 1 wet days and about 12.7 hours of daylight. It is the 5th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 21°C by the end. The sky is clear or mostly clear about 6% of the time in December, and the air most often feels humid.

Daylight stretches from about 12 h 42 min at the start of December to 12 h 42 min by month's end. Set against the rest of the year, December is Santiago de Surco's 9th-clearest and 8th-windiest month. For the whole year in context, see Santiago de Surco's year-round climate.

Daytime high
20°
5th warmest
Overnight low
18°
8th coldest
Rainfall
4 mm
1 wet days
Daylight
12 h 42 min
5:43 AM – 6:25 PM
Cloud cover
81%
9th clearest
Wind
14 km/h
8th windiest
Solar energy
6.77 kWh/m²
Travel score
7.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 19°C in the first days to 21°C by the end.

A typical December day in Santiago de Surco reaches about 20°C in the afternoon and slips back to 18°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 21°C. Set against its neighbours, December runs about 2°C warmer than November and about 2°C cooler than January.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
11917
21917
31917
41917
51918
61918
71918
81918
92018
102018
112018
122018
132018
142018
152018
162018
172018
182018
192018
202018
212019
222019
232119
242119
252119
262119
272119
282119
292119
302119
312119

Santiago de Surco weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 20°71.712.67.3
Feb23° / 21°92.412.47.3
Mar22° / 21°41.312.17.4
Apr21° / 19°20.311.77.4
May19° / 17°62.111.47.0
Jun17° / 16°145.211.36.1
Jul17° / 15°176.811.45.5
Aug16° / 15°155.811.65.5
Sep16° / 15°103.411.95.7
Oct17° / 15°51.212.36.2
Nov18° / 16°40.812.66.8
Dec20° / 18°4112.77.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 84%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
22080
32080
41981
51981
61981
71981
81882
91882
101882
111882
121882
131684
141684
151684
161684
171684
181585
191486
201486
211486
221486
231486
241387
251387
261387
271486
281486
291486
301486
311585

Chance of precipitation in December

Any precipitation

Santiago de Surco gets around 4 mm of rain over 1 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 3% and peaks near 4% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
24
34
44
54
63
73
83
93
103
113
123
133
143
153
163
173
183
193
203
213
223
233
243
253
263
274
284
294
304
314

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 79% of days. Sticky, muggy-or-worse air turns up on roughly 20% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
179030
269130
359230
439340
539340
629440
719540
819450
919450
1009460
1109460
1209370
1309280
1409190
15089110
16088120
17086140
18084160
19081181
20078211
21076231
22073261
23069301
24066331
25062371
26058411
27053452
28050492
29046522
30042562
31039592

Wind in December

Winds average 14 km/h in December.

Across December, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 42 min at the start of December to 12 h 42 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 5:38 AM to 5:50 AM, and sunset from 6:18 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:386:18
212.75:386:18
312.75:386:19
412.75:396:19
512.75:396:20
612.75:396:20
712.75:406:21
812.75:406:21
912.75:406:22
1012.75:416:22
1112.75:416:23
1212.75:416:23
1312.75:426:24
1412.75:426:24
1512.75:436:25
1612.75:436:25
1712.75:436:26
1812.75:446:26
1912.75:446:27
2012.75:456:27
2112.75:456:28
2212.75:466:28
2312.75:466:29
2412.75:476:29
2512.75:476:30
2612.75:486:30
2712.75:486:31
2812.75:496:31
2912.75:496:31
3012.75:506:32
3112.75:506:32

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.77 kWh/m².

For context, solar energy here swings from a low near 4.87 kWh/m² to a high of 7.09 kWh/m² in November across the year — December's 6.77 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
17.0Intense
27.0Intense
36.9Intense
46.9Intense
56.9Intense
66.9Intense
76.9Intense
86.9Intense
96.9Intense
106.9Intense
116.8Intense
126.8Intense
136.8Intense
146.8Intense
156.8Intense
166.8Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
316.6Intense
Planning a trip in December

Is December a good time to visit Santiago de Surco?

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

7.0
Sightseeing
5th-best month of the year
3.7
Beach & pool
5th-best month of the year

December is one of the better times to visit Santiago de Surco for general sightseeing.

What to pack for Santiago de Surco in December

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

In December, Santiago de Surco sees daytime highs around 20°C and nights near 18°C. Pack sun protection.

sun protection

Sea temperature near Santiago de Surco in December

The nearest coast averages about 19°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 13 km away) is warmest in February at about 22°C and coldest in September near 17°C.

It's comfortable for a long swim from Jan 1 to Apr 9 — about 3.3 months when the water holds above 20°C.

16°18°20°22°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb22Refreshing
Mar21Refreshing
Apr20Cool
May19Cool
Jun18Cool
Jul18Cool
Aug17Cool
Sep17Cool
Oct17Cool
Nov18Cool
Dec19Cool

UV index in Santiago de Surco in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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 Santiago de Surco peaks around February 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 12UV 15Jun 22UV 8
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar13Extreme
Apr12Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug10Extreme
Sep10Extreme
Oct13Extreme
Nov12Extreme
Dec13Extreme

Air quality in Santiago de Surco 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 Santiago de Surco is worst in March — around 23 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2023 µg/m³Nov 2017 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar23Moderate
Apr22Moderate
May23Moderate
Jun22Moderate
Jul20Moderate
Aug19Moderate
Sep18Moderate
Oct18Moderate
Nov17Moderate
Dec17Moderate
Location & terrain

Where is Santiago de Surco?

Santiago de Surco sits at 12.1°S, 77.0°W, 92 m above sea level, in Peru. The nearest listed city is Barranco, 1.0 km away.

Topography around Santiago de Surco

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

Within 3 km, the terrain around Santiago de Surco has only modest variations in elevation — a maximum elevation change of 158 m around an average of 86 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,046 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,959 m.

The land around Santiago de Surco is covered by artificial surfaces (86%) within 3 km, artificial surfaces (43%) and water (35%) within 16 km, and water (43%) and bare terrain (31%) within 80 km.

3 km
158 m
16 km
1,046 m
80 km
4,959 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Barranco 1.0 km · Miraflores 4.0 km · San Francisco De Borja 5.0 km · San Isidro 6.0 km · Jesus Maria 8.0 km · Breña 10 km · Santa Anita - Los Ficus 10 km · Lima 11 km

Peru travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
220 V · 60 Hz
Prices
≈ 51% of US
price level, 2025
GDP per capita
$9,684
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
49%
of population, 2024
Homicide rate
8.6
per 100k, 2021
Road deaths
13.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 519
Religion
Catholic 76%Evangelical Christian 16%no religion 5%other religions 3%

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 Santiago de Surco (-12.1359°, -77.0074°, elevation 92 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. 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).