Colonia del Sacramento weather in October

In October, Colonia del Sacramento sees average daytime highs of 20°C and overnight lows near 14°C, with 111 mm of rain across 9.4 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 21°C by the end. The sky is clear or mostly clear about 39% 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 Colonia del Sacramento's 9th-clearest and 2nd-windiest month. For the whole year in context, see Colonia del Sacramento's year-round climate.

Daytime high
20°
7th warmest
Overnight low
14°
6th coldest
Rainfall
111 mm
9.4 wet days
Daylight
12 h 54 min
7:10 AM – 8:03 PM
Cloud cover
54%
9th clearest
Wind
18 km/h
2nd windiest
Solar energy
5.66 kWh/m²
Travel score
6.5
out of 10

Colonia del Sacramento is City in Uruguay, departmental capital of Colonia.

Density
1,407/km²
people per km²
Founded
1680

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 21°C by the end.

A typical October day in Colonia del Sacramento reaches about 20°C in the afternoon and slips back to 14°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 16°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)
11813
21813
31813
41913
51913
61913
71913
81914
91914
101914
112014
122014
132014
142014
152014
162014
172015
182015
192015
202115
212115
222115
232115
242115
252115
262115
272115
282115
292115
302115
312115

Colonia del Sacramento weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 21°816.9147.3
Feb26° / 20°1038.113.37.1
Mar24° / 19°1017.612.37.5
Apr21° / 15°977.911.26.9
May17° / 12°706.610.26.0
Jun14° / 10°717.29.74.5
Jul13° / 746.89.94.1
Aug15° / 10°756.710.75.1
Sep17° / 12°817.611.85.8
Oct20° / 14°1119.412.96.5
Nov23° / 17°1027.913.87.3
Dec26° / 19°847.714.37.4

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
24951
34951
45050
55050
65050
75050
85050
95050
105248
115347
125347
135446
145446
155545
165545
175644
185545
195545
205644
215644
225644
235644
245644
255644
265644
275644
285545
295545
305545
315545

Chance of precipitation in October

Any precipitation

Colonia del Sacramento gets around 111 mm of rain over 9.4 wet days in October, the wettest month. 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 (%)
128
229
329
429
530
630
730
830
930
1030
1130
1230
1330
1430
1531
1631
1731
1831
1931
2031
2130
2230
2330
2430
2530
2630
2729
2829
2929
3029
3129

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 49% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1692470
2672580
3652690
4632791
56128101
66028111
75829121
85630131
95530141
105231152
115231152
125131162
134932172
144832173
154732183
164632183
174532193
184532194
194431204
204431205
214431205
224431215
234330215
244331215
254331215
264231215
274232215
284132225
294033226
303933226
313834226

Wind in October

Winds average 18 km/h in October.

Across October, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light 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 7:30 AM to 6:54 AM, and sunset from 7:51 PM to 8:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.37:307:51
212.47:297:51
312.47:277:52
412.57:267:53
512.57:257:54
612.57:237:55
712.67:227:55
812.67:207:56
912.67:197:57
1012.77:187:58
1112.77:167:59
1212.77:157:59
1312.87:148:00
1412.87:138:01
1512.87:118:02
1612.97:108:03
1712.97:098:04
1812.97:088:05
1913.07:068:05
2013.07:058:06
2113.17:048:07
2213.17:038:08
2313.17:028:09
2413.27:018:10
2513.27:008:11
2613.26:598:12
2713.36:578:13
2813.36:568:13
2913.36:558:14
3013.36:548:15
3113.46:548:16

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.66 kWh/m².

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 7.57 kWh/m² in December across the year — October's 5.66 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.2Bright
45.2Bright
55.2Bright
65.3Bright
75.3Bright
85.3Bright
95.4Bright
105.4Bright
115.5Bright
125.5Bright
135.6Bright
145.6Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.9Bright
215.9Bright
226.0Bright
236.0Intense
246.1Intense
256.1Intense
266.2Intense
276.2Intense
286.2Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in October

Is October a good time to visit Colonia del Sacramento?

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

6.5
Sightseeing
7th-best month of the year
3.4
Beach & pool
7th-best month of the year

October is a reasonable time to visit Colonia del Sacramento for sightseeing.

What to pack for Colonia del Sacramento in October

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

In October, Colonia del Sacramento sees daytime highs around 20°C and nights near 14°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

Sea temperature near Colonia del Sacramento in October

The nearest coast averages about 18°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in January at about 25°C and coldest in July near 13°C.

It's comfortable for a long swim from Nov 9 to Apr 19 — about 5.3 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar23Refreshing
Apr20Refreshing
May17Cool
Jun14Bracing
Jul13Bracing
Aug13Bracing
Sep15Bracing
Oct18Cool
Nov21Refreshing
Dec23Refreshing

UV index in Colonia del Sacramento in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Colonia del Sacramento peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 15UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Colonia del Sacramento?

Colonia del Sacramento sits at 34.5°S, 57.8°W, 30 m above sea level, in Uruguay. The nearest listed city is Ensenada, 45 km away.

EnsenadaBerissoQuilmesBerazateguiRetiroBuenos AiresLa PlataSarandí

Topography around Colonia del Sacramento

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Colonia del Sacramento.

Within 3 km, the terrain around Colonia del Sacramento has only modest variations in elevation — a maximum elevation change of 48 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 87 m; within 80 km, only modest variations in elevation — a maximum elevation change of 189 m.

The land around Colonia del Sacramento is covered by water (49%) within 3 km, water (65%) within 16 km, and water (37%), grassland (23%) and cropland (23%) within 80 km.

3 km
48 m
16 km
87 m
80 km
189 m
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Ensenada 45 km · Berisso 46 km · Quilmes 48 km · Berazategui 48 km · Retiro 52 km · Buenos Aires 52 km · La Plata 52 km · Sarandí 52 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 Colonia del Sacramento (-34.4626°, -57.8398°, elevation 30 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).