San Lorenzo weather in December

In December, San Lorenzo sees average daytime highs of 22°C and overnight lows near 14°C, with 314 mm of rain across 23.5 wet days and about 13.5 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 12% of the time in December, and the air most often feels comfortable.

Daylight stretches from about 13 h 24 min at the start of December to 13 h 30 min by month's end. Set against the rest of the year, December is San Lorenzo's 9th-clearest and 5th-windiest month. For the whole year in context, see San Lorenzo's year-round climate.

Daytime high
22°
2nd warmest
Overnight low
14°
10th coldest
Rainfall
314 mm
23.5 wet days
Daylight
13 h 30 min
6:32 AM – 8:04 PM
Cloud cover
73%
9th clearest
Wind
5 km/h
5th windiest
Solar energy
6.06 kWh/m²
Travel score
4.5
out of 10

San Lorenzo is human settlement in Argentina.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical December day in San Lorenzo reaches about 22°C in the afternoon and slips back to 14°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12213
22213
32213
42213
52213
62213
72213
82213
92213
102213
112213
122214
132214
142214
152214
162214
172214
182314
192314
202314
212314
222314
232314
242314
252314
262314
272314
282314
292314
302314
312314

San Lorenzo weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan23° / 14°33926.2013.44.2
Feb22° / 14°31524.1012.94.0
Mar20° / 13°34126.1012.23.9
Apr18° / 11°216200.111.44.5
May16° / 131150.310.84.5
Jun15° / 619.60.510.54.8
Jul15° / 447.80.810.65.1
Aug17° / 528.10.511.16.1
Sep19° / 8010.90.211.86.2
Oct20° / 10°17317.70.112.65.3
Nov21° / 12°23519013.25.0
Dec22° / 14°31423.5013.54.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22773
32773
42674
52674
62674
72674
82773
92773
102773
112773
122773
132773
142773
152773
162872
172872
182872
192872
202971
212872
222872
232872
242773
252872
262773
272674
282674
292674
302575
312575

Chance of precipitation in December

Any precipitation

San Lorenzo gets around 314 mm of rain over 23.5 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 76% and peaks near 79% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
173
274
374
475
576
676
777
877
978
1078
1178
1278
1377
1477
1577
1677
1776
1876
1976
2075
2175
2275
2375
2475
2575
2676
2776
2877
2977
3078
3179

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the comfortable band about 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13549150
23451150
33351160
43251170
53251170
63151180
73051190
82951200
92851210
102751220
112651230
122452240
132352250
142252260
152151280
162051290
172050300
181950310
191850320
201749330
211649341
221549351
231550351
241450361
251350361
261250371
271250371
281150381
291051381
301050391
31950401

Wind in December

Winds average 5 km/h in December.

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

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 24 min at the start of December to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 6:29 AM to 6:40 AM, and sunset from 7:54 PM to 8:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:297:54
213.46:297:55
313.46:297:56
413.56:297:56
513.56:297:57
613.56:307:58
713.56:307:58
813.56:307:59
913.56:308:00
1013.56:308:00
1113.56:318:01
1213.56:318:02
1313.56:318:02
1413.56:328:03
1513.56:328:03
1613.56:328:04
1713.56:338:04
1813.56:338:05
1913.56:338:06
2013.56:348:06
2113.56:348:07
2213.56:358:07
2313.56:358:07
2413.56:368:08
2513.56:368:08
2613.56:378:09
2713.56:378:09
2813.56:388:10
2913.56:388:10
3013.56:398:10
3113.56:408:11

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.06 kWh/m².

For context, solar energy here swings from a low near 3.56 kWh/m² to a high of 6.08 kWh/m² in November across the year — December's 6.06 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
116.0Bright
126.0Bright
136.0Bright
146.0Intense
156.0Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in December

Hazard calendar for San Lorenzo

In seasonPeak

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

San Lorenzo's rainy season runs October–April, when most of the year's rain falls.

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

Is December a good time to visit San Lorenzo?

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

4.5
Sightseeing
7th-best month of the year
3.3
Beach & pool
1st-best month of the year

December is a reasonable time to visit San Lorenzo for sightseeing.

What to pack for San Lorenzo in December

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

In December, San Lorenzo sees daytime highs around 22°C and nights near 14°C. Pack rain gear and sun protection. Worth having: light clothes. About 24 days see rain.

rain gearsun protectionlight clothes

UV index in San Lorenzo in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 16 (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 Lorenzo peaks around January 16 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 16UV 16Jul 10UV 6
UV index (midday)Level
Jan16Extreme
Feb16Extreme
Mar14Extreme
Apr9Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep10Extreme
Oct13Extreme
Nov15Extreme
Dec16Extreme
Location & terrain

Where is San Lorenzo?

San Lorenzo sits at 24.7°S, 65.5°W, 1,335 m above sea level, in Argentina. The nearest listed city is Salta, 10 km away.

Topography around San Lorenzo

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

Within 3 km, the terrain around San Lorenzo has large variations in elevation — a maximum elevation change of 647 m around an average of 1,401 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,253 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,347 m.

The land around San Lorenzo is covered by trees (48%) and grassland (36%) within 3 km, trees (56%) and grassland (20%) within 16 km, and trees (41%), bare terrain (23%) and grassland (20%) within 80 km.

3 km
647 m
16 km
2,253 m
80 km
5,347 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Salta 10 km · San José de los Cerrillos 18 km · Rosario de Lerma 29 km · General Güemes 45 km · Palpalá 60 km · San Salvador de Jujuy 64 km · San Pedro de Jujuy 84 km · San José de Metán 99 km

Argentina travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / I
220 V · 50 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$14,898
2025
Happiness
6.4 / 10
World Happiness, 2025
Homicide rate
4.5
per 100k, 2023
Road deaths
14.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 575
Religion
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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 Lorenzo (-24.7362°, -65.4873°, elevation 1,335 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).