San Carlos weather in October

In October, San Carlos sees average daytime highs of 19°C and overnight lows near 12°C, with 102 mm of rain across 9.7 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 20°C by the end. The sky is clear or mostly clear about 34% of the time in October, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of October to 13 h 24 min by month's end. Set against the rest of the year, October is San Carlos's 7th-clearest and 3rd-windiest month. For the whole year in context, see San Carlos's year-round climate.

Daytime high
19°
7th warmest
Overnight low
12°
6th coldest
Rainfall
102 mm
9.7 wet days
Daylight
12 h 54 min
6:58 AM – 7:51 PM
Cloud cover
59%
7th clearest
Wind
16 km/h
3rd windiest
Solar energy
5.38 kWh/m²
Travel score
6.3
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 October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 18°C in the first days to 20°C by the end.

A typical October day in San Carlos reaches about 19°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 24°C. Set against its neighbours, October runs about 3°C warmer than September and about 3°C cooler than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
11810
21811
31811
41811
51811
61811
71911
81911
91911
101911
111911
121912
131912
141912
152012
162012
172012
182012
192012
202012
212012
222012
232012
242012
252012
262012
272012
282012
292112
302113
312113

San Carlos weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 2nd-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 October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24555
34555
44555
54555
64555
74456
84555
94654
104753
114753
124852
134951
144951
154951
164951
175050
185050
195050
205050
215050
224951
234951
244951
254951
264951
274852
284852
294951
304951
314951

Chance of precipitation in October

Any precipitation

San Carlos gets around 102 mm of rain over 9.7 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
630
731
830
930
1030
1130
1230
1330
1430
1530
1630
1730
1831
1931
2031
2131
2231
2331
2431
2531
2631
2731
2831
2930
3030
3130

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 62% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1762040
2752140
3732250
4722350
5712360
6702460
7692470
8682570
9672580
10662680
11652690
12652690
13642790
146327100
156327100
166028111
176028111
185928121
195828131
205729131
215629141
225629141
235629141
245529151
255529151
265529151
275529151
285430151
295330161
305330161
315330161

Wind in October

Winds average 16 km/h in October.

Across October, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light 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 October

DaylightNight

Daylight runs from about 12 h 18 min at the start of October to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over October. Sunrise moves from 7:18 AM to 6:41 AM, and sunset from 7:39 PM to 8:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.37:187:39
212.47:177:40
312.47:157:41
412.57:147:41
512.57:137:42
612.57:117:43
712.67:107:44
812.67:087:45
912.67:077:45
1012.77:067:46
1112.77:047:47
1212.77:037:48
1312.87:027:49
1412.87:017:50
1512.96:597:51
1612.96:587:51
1712.96:577:52
1813.06:567:53
1913.06:547:54
2013.06:537:55
2113.16:527:56
2213.16:517:57
2313.16:507:58
2413.26:497:59
2513.26:477:59
2613.26:468:00
2713.36:458:01
2813.36:448:02
2913.36:438:03
3013.46:428:04
3113.46:418:05

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.38 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 — October's 5.38 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.9Bright
34.9Bright
44.9Bright
55.0Bright
65.0Bright
75.0Bright
85.1Bright
95.1Bright
105.2Bright
115.2Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.9Bright
285.9Bright
296.0Bright
306.0Intense
316.0Intense
Planning a trip in October

Is October a good time to visit San Carlos?

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

6.3
Sightseeing
7th-best month of the year
3.0
Beach & pool
7th-best month of the year

October is a reasonable time to visit San Carlos for sightseeing.

What to pack for San Carlos in October

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

In October, San Carlos sees daytime highs around 19°C and nights near 12°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

Sea temperature near San Carlos in October

The nearest coast averages about 15°C in October — 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 October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 8 (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
October 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).