Três Passos weather in December

In December, Três Passos sees average daytime highs of 30°C and overnight lows near 19°C, with 176 mm of rain across 13.8 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 41% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 36 min at the start of December to 13 h 42 min by month's end. Set against the rest of the year, December is Três Passos's 8th-clearest and 7th-windiest month. For the whole year in context, see Três Passos's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
19°
10th coldest
Rainfall
176 mm
13.8 wet days
Daylight
13 h 42 min
6:40 AM – 8:24 PM
Cloud cover
55%
8th clearest
Wind
9 km/h
7th windiest
Solar energy
6.56 kWh/m²
Travel score
4.5
out of 10

Três Passos is human settlement in Brazil.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Três Passos 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 26°C and 34°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13019
23019
33019
43019
53019
63019
73019
83019
93019
103019
113019
123019
133019
143019
153019
163019
173020
183020
193020
203120
213120
223120
233120
243120
253120
263120
273120
283120
293120
303120
313120

How December really feels in Três Passos

Once humidity and wind are folded in, December averages 8 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
8
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Três Passos weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 20°1511513.54.1
Feb30° / 20°13914.3134.3
Mar29° / 19°12812.312.25.2
Apr27° / 16°1389.711.46.7
May22° / 13°1569.110.77.0
Jun21° / 12°1499.410.36.5
Jul20° / 11°1409.710.46.6
Aug23° / 12°957.7117.4
Sep24° / 14°15510.311.87.0
Oct27° / 16°21413.212.76.1
Nov29° / 17°16211.513.45.6
Dec30° / 19°17613.813.74.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% 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 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45446
55446
65446
75446
85446
95446
105446
115446
125446
135446
145446
155446
165446
175446
185446
195545
205545
215545
225446
235347
245347
255248
265248
275149
285149
295149
305248
315248

Chance of precipitation in December

Any precipitation

Três Passos gets around 176 mm of rain over 13.8 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 44% and peaks near 49% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
140
240
341
441
541
641
741
842
942
1042
1142
1243
1343
1443
1544
1644
1744
1845
1945
2046
2146
2247
2347
2448
2548
2648
2749
2848
2948
3048
3148

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 37% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1717293710
2716293710
3716293811
4715293811
5715283812
6714283912
7714283913
8713283913
9613273914
10613273915
11612273915
12612273916
13612263917
14612263918
15511263919
16511253920
17511253821
18511253822
19410243823
20410243725
21410243726
2249233628
2339233629
2439223630
2538223532
2638223433
2728213434
2828213335
2928213336
3028213237
3128213238

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 36 min at the start of December to 13 h 42 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 6:37 AM to 6:48 AM, and sunset from 8:14 PM to 8:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:378:14
213.66:378:14
313.66:378:15
413.66:378:16
513.76:378:17
613.76:388:17
713.76:388:18
813.76:388:19
913.76:388:19
1013.76:388:20
1113.76:398:21
1213.76:398:21
1313.76:398:22
1413.76:398:22
1513.76:408:23
1613.76:408:24
1713.76:408:24
1813.76:418:25
1913.76:418:25
2013.76:428:26
2113.76:428:26
2213.76:438:27
2313.76:438:27
2413.76:448:28
2513.76:448:28
2613.76:458:29
2713.76:458:29
2813.76:468:29
2913.76:468:30
3013.76:478:30
3113.76:488:30

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 2.66 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
76.6Intense
86.6Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
316.6Intense
Planning a trip in December

Is December a good time to visit Três Passos?

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

4.5
Sightseeing
10th-best month of the year
6.3
Beach & pool
4th-best month of the year

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

What to pack for Três Passos in December

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

In December, Três Passos sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 14 days see rain.

light clothessun protectionrain gear

UV index in Três Passos in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Três Passos peaks around January 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 20UV 14Jun 21UV 4
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar11Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct8Very high
Nov11Extreme
Dec13Extreme

Air quality in Três Passos 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 Três Passos is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (March, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1516 µg/m³Mar 156 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar6Good
Apr7Good
May7Good
Jun7Good
Jul8Good
Aug12Moderate
Sep17Moderate
Oct11Good
Nov8Good
Dec7Good
Location & terrain

Where is Três Passos?

Três Passos sits at 27.5°S, 53.9°W, 449 m above sea level, in Brazil. The nearest listed city is El Soberbio, 32 km away.

Topography around Três Passos

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

Within 3 km, the terrain around Três Passos has only modest variations in elevation — a maximum elevation change of 212 m around an average of 405 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 329 m; within 80 km, significant variations in elevation — a maximum elevation change of 523 m.

The land around Três Passos is covered by trees (47%) and cropland (23%) within 3 km, trees (45%) and cropland (42%) within 16 km, and trees (52%) and cropland (40%) within 80 km.

3 km
212 m
16 km
329 m
80 km
523 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: El Soberbio 32 km · Itapiranga 39 km · Horizontina 42 km · Três de Maio 47 km · Frederico Westphalen 54 km · Santa Rosa 71 km · Giruá 76 km · Palmeira das Missões 78 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 Três Passos (-27.4556°, -53.9319°, elevation 449 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. 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).