San Carlos weather in March

In March, San Carlos sees average daytime highs of 24°C and overnight lows near 17°C, with 92 mm of rain across 9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 23°C by the end. The sky is clear or mostly clear about 39% of the time in March, and the air most often feels humid.

Daylight stretches from about 12 h 48 min at the start of March to 11 h 42 min by month's end. Set against the rest of the year, March is San Carlos's 3rd-clearest and 11th-windiest month. For the whole year in context, see San Carlos's year-round climate.

Daytime high
24°
4th warmest
Overnight low
17°
10th coldest
Rainfall
92 mm
9 wet days
Daylight
12 h 18 min
7:41 AM – 7:57 PM
Cloud cover
52%
3rd clearest
Wind
15 km/h
11th windiest
Solar energy
4.89 kWh/m²
Travel score
7.2
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 March

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 23°C by the end.

A typical March day in San Carlos reaches about 24°C in the afternoon and slips back to 17°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 28°C. Set against its neighbours, March runs about 2°C cooler than February and about 3°C warmer than April.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12518
22518
32518
42518
52518
62518
72518
82517
92517
102517
112517
122517
132517
142517
152417
162417
172417
182417
192417
202416
212416
222416
232416
242416
252416
262316
272316
282316
292316
302316
312316

San Carlos weather by month

How March compares with the rest of the year at a glance. March is the 4th-warmest and 6th-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 March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 17% of March, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65743
75743
85743
95743
105644
115644
125644
135644
145644
155644
165644
175644
185644
195644
205644
215644
225743
235743
245743
255842
265743
275743
285743
295644
305644
315545

Chance of precipitation in March

Any precipitation

San Carlos gets around 92 mm of rain over 9 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
630
730
830
930
1030
1130
1230
1330
1430
1530
1629
1729
1829
1929
2029
2129
2229
2328
2428
2528
2628
2728
2828
2928
3028
3129

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the humid band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 28% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1122130317
2122130316
3122130306
4132130306
5132130306
6132129306
7142129306
8142129306
9142129306
10152129306
11162129295
12162129295
13172129285
14182129284
15192229274
16202228263
17212228253
18222328252
19232328242
20242329232
21242329221
22252330221
23252330211
24262330201
25262331200
26272331190
27272331180
28282331180
29282331180
30292430170
31292430170

Wind in March

Winds average 15 km/h in March.

Across March, daily wind ranges from about 15 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
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 12 h 48 min at the start of March to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over March. Sunrise moves from 7:28 AM to 7:53 AM, and sunset from 8:17 PM to 7:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.87:288:17
212.87:298:16
312.77:308:15
412.77:318:14
512.77:328:12
612.67:338:11
712.67:348:10
812.67:348:08
912.57:358:07
1012.57:368:06
1112.57:378:04
1212.47:388:03
1312.47:398:02
1412.37:408:00
1512.37:407:59
1612.37:417:57
1712.27:427:56
1812.27:437:55
1912.27:447:53
2012.17:447:52
2112.17:457:50
2212.07:467:49
2312.07:477:47
2412.07:487:46
2511.97:497:45
2611.97:497:43
2711.97:507:42
2811.87:517:40
2911.87:527:39
3011.77:537:37
3111.77:537:36

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.89 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 — March's 4.89 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.4Bright
55.4Bright
65.3Bright
75.3Bright
85.2Bright
95.2Bright
105.2Bright
115.1Bright
125.1Bright
135.0Bright
145.0Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.8Bright
204.7Bright
214.7Bright
224.6Bright
234.6Bright
244.5Bright
254.5Bright
264.4Bright
274.4Bright
284.3Bright
294.3Bright
304.2Bright
314.2Bright
Planning a trip in March

Is March a good time to visit San Carlos?

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

7.2
Sightseeing
2nd-best month of the year
6.1
Beach & pool
4th-best month of the year

March 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 March

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

In March, San Carlos sees daytime highs around 24°C and nights near 17°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near San Carlos in March

The nearest coast averages about 22°C in March — 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 March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 10 (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
March 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).