Eldorado do Sul weather in December

In December, Eldorado do Sul sees average daytime highs of 29°C and overnight lows near 20°C, with 115 mm of rain across 11.6 wet days and about 13.9 hours of daylight. It is the 3rd-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 35% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 48 min at the start of December to 13 h 54 min by month's end. Set against the rest of the year, December is Eldorado do Sul's 3rd-clearest and 4th-windiest month. For the whole year in context, see Eldorado do Sul's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
20°
9th coldest
Rainfall
115 mm
11.6 wet days
Daylight
13 h 54 min
6:25 AM – 8:20 PM
Cloud cover
56%
3rd clearest
Wind
11 km/h
4th windiest
Solar energy
6.56 kWh/m²
Travel score
5.2
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 28°C in the first days to 30°C by the end.

A typical December day in Eldorado do Sul reaches about 29°C in the afternoon and slips back to 20°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 34°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12818
22818
32819
42819
52819
62919
72919
82919
92919
102919
112919
122919
132919
142919
152919
162920
172920
182920
193020
203020
213020
223020
233020
243020
253020
263020
273020
283020
293021
303021
313021

How December really feels in Eldorado do Sul

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Eldorado do Sul weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°12713.113.74.6
Feb30° / 21°11612.513.14.7
Mar28° / 20°10411.312.25.7
Apr26° / 17°1049.111.36.9
May22° / 13°1078.510.56.8
Jun19° / 11°1159.210.16.2
Jul19° / 10°1409.810.36.1
Aug21° / 11°1179.810.96.6
Sep22° / 13°14511.111.86.4
Oct24° / 16°16512.112.76.4
Nov27° / 17°11910.113.56.5
Dec29° / 20°11511.613.95.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25446
35347
45446
55347
65347
75248
85248
95248
105248
115248
125347
135347
145347
155248
165248
175347
185347
195347
205347
215248
225248
235248
245149
255149
265149
275149
285149
295149
305248
315248

Chance of precipitation in December

Any precipitation

Eldorado do Sul gets around 115 mm of rain over 11.6 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 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
736
836
936
1036
1136
1236
1337
1437
1537
1637
1737
1838
1938
2038
2138
2238
2338
2438
2538
2639
2739
2839
2939
3039
3139

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 56% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1720333280
2719333280
3719333290
4719333390
57183233100
67173233100
77173233110
87163234110
96163134120
106163134130
116153135140
126153035150
135143036150
145142836160
155132836170
165132736190
175132637200
184122537210
194122437220
204112437241
214112337251
223112237261
233102237271
243102137291
25392137301
26392136301
27292037311
28282037321
29282037321
30282037331
31272037331

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 48 min at the start of December to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 6:22 AM to 6:32 AM, and sunset from 8:10 PM to 8:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.86:228:10
213.86:228:11
313.86:228:12
413.86:228:12
513.86:228:13
613.96:238:14
713.96:238:15
813.96:238:15
913.96:238:16
1013.96:238:17
1113.96:238:17
1213.96:248:18
1313.96:248:19
1413.96:248:19
1513.96:248:20
1613.96:258:20
1713.96:258:21
1813.96:268:22
1913.96:268:22
2013.96:268:23
2113.96:278:23
2213.96:278:24
2313.96:288:24
2413.96:288:25
2513.96:298:25
2613.96:298:25
2713.96:308:26
2813.96:308:26
2913.96:318:26
3013.96:328:27
3113.96:328:27

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.56 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 6.56 kWh/m² in December across the year — December's 6.56 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in December

Is December a good time to visit Eldorado do Sul?

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

5.2
Sightseeing
10th-best month of the year
6.7
Beach & pool
2nd-best month of the year

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

What to pack for Eldorado do Sul in December

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

In December, Eldorado do Sul sees daytime highs around 29°C and nights near 20°C. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.

light clothessun protectionrain gear

Sea temperature near Eldorado do Sul in December

The nearest coast averages about 24°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 57 km away) is warmest in February at about 26°C and coldest in July near 15°C.

It's comfortable for a long swim from Oct 23 to May 10 — about 6.6 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar25Warm
Apr23Refreshing
May19Cool
Jun17Cool
Jul15Cool
Aug16Cool
Sep17Cool
Oct20Cool
Nov22Refreshing
Dec24Warm

UV index in Eldorado do Sul 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 Eldorado do Sul 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 15UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar9Very high
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct7Very high
Nov11Extreme
Dec12Extreme

Air quality in Eldorado do Sul in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Eldorado do Sul is worst in August — around 20 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 10 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1720 µg/m³Dec 1811 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb11Good
Mar12Good
Apr15Moderate
May17Moderate
Jun17Moderate
Jul19Moderate
Aug20Moderate
Sep19Moderate
Oct13Moderate
Nov12Good
Dec10Good
Location & terrain

Where is Eldorado do Sul?

Eldorado do Sul sits at 30.1°S, 51.6°W, 30 m above sea level, in Brazil. The nearest listed city is Charqueadas, 14 km away.

Topography around Eldorado do Sul

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

Within 3 km, the terrain around Eldorado do Sul has only modest variations in elevation — a maximum elevation change of 88 m around an average of 33 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 287 m; within 80 km, large variations in elevation — a maximum elevation change of 720 m.

The land around Eldorado do Sul is covered by cropland (36%), trees (30%) and grassland (29%) within 3 km, trees (45%), grassland (27%) and cropland (23%) within 16 km, and trees (48%) and grassland (20%) within 80 km.

3 km
88 m
16 km
287 m
80 km
720 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Charqueadas 14 km · São Jerônimo 17 km · Triunfo 18 km · Guaíba 28 km · Butiá 34 km · Porto Alegre 38 km · Taquari 40 km · Nova Santa Rita 42 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 Eldorado do Sul (-30.0839°, -51.6161°, 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).