Salto weather in December

In December, Salto sees average daytime highs of 30°C and overnight lows near 19°C, with 115 mm of rain across 8.2 wet days and about 14 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 29°C in the first days to 31°C by the end. The sky is clear or mostly clear about 49% of the time in December, and the air most often feels humid.

Daylight stretches from about 13 h 54 min at the start of December to 14 hours by month's end. Set against the rest of the year, December is Salto's 4th-clearest and 6th-windiest month. For the whole year in context, see Salto's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
19°
10th coldest
Rainfall
115 mm
8.2 wet days
Daylight
14 hours
6:47 AM – 8:49 PM
Cloud cover
46%
4th clearest
Wind
13 km/h
6th windiest
Solar energy
7.21 kWh/m²
Travel score
5.4
out of 10

Salto is city in Uruguay.

Density
3,080/km²
people per km²
Founded
1756

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 29°C in the first days to 31°C by the end.

A typical December day in Salto reaches about 30°C in the afternoon and slips back to 19°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 35°C. Set against its neighbours, December runs about 3°C warmer than November and about 1°C cooler than January.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12917
22917
32917
42917
52917
62918
72918
82918
92918
103018
113018
123018
133018
143018
153018
163018
173019
183019
193019
203019
213019
223019
233119
243119
253119
263120
273120
283120
293120
303120
313120

Salto 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 daysDaylight (hours)Travel score
Jan31° / 20°1128.513.84.7
Feb30° / 20°1058.613.15.2
Mar28° / 18°1167.912.26.5
Apr24° / 15°1488.311.37.3
May20° / 12°1047.310.46.8
Jun18° / 897.4106.2
Jul17° / 766.410.26.1
Aug20° / 907.110.96.9
Sep22° / 11°917.511.87.0
Oct24° / 14°1399.312.87.1
Nov27° / 16°1127.213.66.9
Dec30° / 19°1158.2145.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 39%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
26040
36040
46139
56139
66139
76238
86337
96337
106337
116436
126436
136436
146337
156337
166238
176238
186238
196139
206139
216139
226040
236040
246040
255941
265941
275941
286040
296040
306139
316139

Chance of precipitation in December

Any precipitation

Salto gets around 115 mm of rain over 8.2 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 27% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
325
425
524
624
724
824
924
1024
1125
1225
1326
1426
1527
1628
1728
1829
1929
2029
2129
2229
2329
2429
2529
2629
2729
2828
2928
3028
3127

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
12528261820
22528261820
32527271820
42527271830
52526271930
62426281930
72425281930
82325291940
92324292040
102224292040
112224302050
122123302150
132023302160
141923302260
151822302270
161822302370
171721302480
181621292590
1915202926100
2015202826100
2114192727111
2214192728121
2313192628131
2413182529141
2513182429151
2613172329161
2712172329171
2812172230172
2912172230182
3012162230182
3112162230192

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 54 min at the start of December to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 6:45 AM to 6:54 AM, and sunset from 8:38 PM to 8:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.96:458:38
213.96:458:39
313.96:458:40
413.96:458:41
513.96:458:42
614.06:458:42
714.06:458:43
814.06:458:44
914.06:458:44
1014.06:458:45
1114.06:468:46
1214.06:468:46
1314.06:468:47
1414.06:468:48
1514.06:478:48
1614.06:478:49
1714.06:478:50
1814.06:488:50
1914.06:488:51
2014.06:498:51
2114.06:498:52
2214.06:498:52
2314.06:508:53
2414.06:508:53
2514.06:518:53
2614.06:528:54
2714.06:528:54
2814.06:538:55
2914.06:538:55
3014.06:548:55
3114.06:548:56

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.21 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.4 kWh/m² to a high of 7.21 kWh/m² in December across the year — December's 7.21 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.2Intense
47.2Intense
57.2Intense
67.2Intense
77.2Intense
87.2Intense
97.3Intense
107.3Intense
117.3Intense
127.2Intense
137.2Intense
147.2Intense
157.2Intense
167.2Intense
177.2Intense
187.2Intense
197.2Intense
207.2Intense
217.2Intense
227.2Intense
237.2Intense
247.2Intense
257.2Intense
267.2Intense
277.2Intense
287.2Intense
297.2Intense
307.2Intense
317.2Intense
Planning a trip in December

Is December a good time to visit Salto?

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

5.4
Sightseeing
10th-best month of the year
7.3
Beach & pool
1st-best month of the year

December is a reasonable time to visit Salto for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Salto in December

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

In December, Salto sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 8 days see rain.

light clothessun protectionrain gear

UV index in Salto in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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 Salto peaks around January 18 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 18UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar10Extreme
Apr7High
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep7High
Oct7Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Salto?

Salto sits at 31.4°S, 58.0°W, 52 m above sea level, in Uruguay. The nearest listed city is Concordia, 5.0 km away.

ChajaríFederalColónPaysandúConcepción del UruguayMonte Caseros

Topography around Salto

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

Within 3 km, the terrain around Salto has only modest variations in elevation — a maximum elevation change of 57 m around an average of 33 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 81 m; within 80 km, only modest variations in elevation — a maximum elevation change of 193 m.

The land around Salto is covered by artificial surfaces (48%) and grassland (27%) within 3 km, grassland (55%) and trees (27%) within 16 km, and grassland (62%) within 80 km.

3 km
57 m
16 km
81 m
80 km
193 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Concordia 5.0 km · Chajarí 70 km · Federal 92 km · Colón 94 km · Paysandú 104 km · Villaguay 114 km · Concepción del Uruguay 125 km · Monte Caseros 130 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 Salto (-31.3881°, -57.9598°, elevation 52 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).