San Carlos weather in January

In January, San Carlos sees average daytime highs of 26°C and overnight lows near 18°C, with 78 mm of rain across 8.3 wet days and about 14.1 hours of daylight. It is the 1st-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 43% of the time in January, and the air most often feels muggy.

Daylight stretches from about 14 h 18 min at the start of January to 13 h 48 min by month's end. Set against the rest of the year, January is San Carlos's 1st-clearest and 8th-windiest month. For the whole year in context, see San Carlos's year-round climate.

Daytime high
26°
1st warmest
Overnight low
18°
11th coldest
Rainfall
78 mm
8.3 wet days
Daylight
14 h 06 min
6:46 AM – 8:52 PM
Cloud cover
47%
1st clearest
Wind
16 km/h
8th windiest
Solar energy
7.18 kWh/m²
Travel score
7.1
out of 10

San Carlos is city in the Maldonado Department of southern Uruguay.

Density
2,753/km²
people per km²
Founded
1763

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical January day in San Carlos reaches about 26°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°C. Set against its neighbours, January runs about 1°C warmer than December and on par with February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12618
22618
32618
42618
52618
62618
72618
82618
92618
102618
112618
122618
132618
142618
152618
162618
172618
182618
192618
202618
212618
222718
232718
242718
252718
262718
272718
282718
292718
302618
312618

San Carlos weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°788.314.17.1
Feb26° / 18°99913.36.8
Mar24° / 17°92912.37.2
Apr21° / 14°1048.911.26.7
May18° / 11°837.910.26.0
Jun15° / 918.79.74.7
Jul14° / 9499.94.3
Aug16° / 958.510.75.1
Sep17° / 908.511.85.6
Oct19° / 12°1029.712.96.3
Nov22° / 14°908.313.87.0
Dec25° / 16°828.514.37.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of January, with mostly cloudy or overcast conditions the remaining 38%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26238
36238
46337
56337
66337
76337
86337
96436
106436
116436
126436
136436
146535
156436
166436
176436
186436
196436
206436
216337
226337
236238
246238
256139
266040
276040
285941
295842
305842
315743

Chance of precipitation in January

Any precipitation

San Carlos gets around 78 mm of rain over 8.3 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
526
626
726
826
926
1026
1126
1226
1325
1425
1525
1625
1725
1826
1926
2026
2127
2227
2328
2428
2529
2630
2731
2832
2932
3033
3133

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 35% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1152131285
2152130285
3142230295
4142230295
5142230296
6142229286
7142329286
8142329286
9142329285
10152329285
11152429285
12152429285
13152429285
14142429285
15142529284
16142529284
17142529284
18132529285
19132529285
20132429295
21132429296
22122428306
23122328307
24122328317
25112228318
26112228328
27112127329
28112027329
29112027329
301119273210
311119273210

Wind in January

Winds average 16 km/h in January.

Across January, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 18 min at the start of January to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over January. Sunrise moves from 6:34 AM to 7:01 AM, and sunset from 8:52 PM to 8:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.36:348:52
214.36:358:52
314.36:358:52
414.36:368:52
514.36:378:52
614.26:388:52
714.26:388:53
814.26:398:53
914.26:408:53
1014.26:418:53
1114.26:428:53
1214.26:438:52
1314.16:438:52
1414.16:448:52
1514.16:458:52
1614.16:468:52
1714.16:478:52
1814.16:488:51
1914.06:498:51
2014.06:508:51
2114.06:518:50
2214.06:528:50
2314.06:538:50
2413.96:548:49
2513.96:558:49
2613.96:568:48
2713.96:578:48
2813.86:588:47
2913.86:598:47
3013.87:008:46
3113.87:018:46

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.18 kWh/m².

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 7.38 kWh/m² in December across the year — January's 7.18 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.3Intense
47.3Intense
57.3Intense
67.3Intense
77.3Intense
87.3Intense
97.3Intense
107.3Intense
117.3Intense
127.3Intense
137.3Intense
147.3Intense
157.3Intense
167.2Intense
177.2Intense
187.2Intense
197.1Intense
207.1Intense
217.1Intense
227.0Intense
237.0Intense
247.0Intense
256.9Intense
266.8Intense
276.8Intense
286.8Intense
296.7Intense
306.7Intense
316.6Intense
Planning a trip in January

Is January a good time to visit San Carlos?

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

7.1
Sightseeing
3rd-best month of the year
6.9
Beach & pool
1st-best month of the year

January is one of the better times to visit San Carlos for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Carlos in January

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

In January, San Carlos sees daytime highs around 26°C and nights near 18°C. Pack sun protection. Worth having: light clothes and rain gear. About 8 days see rain.

sun protectionlight clothesrain gear

Sea temperature near San Carlos in January

The nearest coast averages about 22°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 21 km away) is warmest in February at about 23°C and coldest in July near 12°C.

It's comfortable for a long swim from Dec 12 to Apr 10 — about 3.9 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb23Refreshing
Mar22Refreshing
Apr20Cool
May17Cool
Jun14Bracing
Jul12Bracing
Aug12Bracing
Sep13Bracing
Oct15Cool
Nov18Cool
Dec20Refreshing

UV index in San Carlos in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Carlos peaks around January 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 17UV 12Jun 18UV 2
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar10Very high
Apr6High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is San Carlos?

San Carlos sits at 34.8°S, 54.9°W, 28 m above sea level, in Uruguay. The nearest listed city is Maldonado, 12 km away.

PiriapolisMinasRochaLa PalomaPandoBarros Blancos

Topography around San Carlos

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

Within 3 km, the terrain around San Carlos has only modest variations in elevation — a maximum elevation change of 42 m around an average of 11 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 266 m; within 80 km, significant variations in elevation — a maximum elevation change of 498 m.

The land around San Carlos is covered by grassland (45%) and trees (22%) within 3 km, grassland (60%) within 16 km, and grassland (42%) and water (37%) within 80 km.

3 km
42 m
16 km
266 m
80 km
498 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Maldonado 12 km · Punta del Este 17 km · Piriapolis 34 km · Minas 55 km · Rocha 64 km · La Paloma 70 km · Pando 95 km · Barros Blancos 99 km

Uruguay travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / I / L
230 V · 50 Hz
Prices
≈ 66% of US
price level, 2025
GDP per capita
$25,216
2025
Happiness
6.6 / 10
World Happiness, 2025
Homicide rate
11.2
per 100k, 2023
Road deaths
14.8
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 542
Religion
none 47%Roman Catholic 37%Protestant 15%atheist 10%

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 Carlos (-34.7912°, -54.9182°, elevation 28 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).