Viçosa weather in December

In December, Viçosa sees average daytime highs of 28°C and overnight lows near 20°C, with 244 mm of rain across 20.1 wet days and about 13.2 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 10% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 12 min at the start of December to 13 h 12 min by month's end. Set against the rest of the year, December is Viçosa's 11th-clearest and 5th-windiest month. For the whole year in context, see Viçosa's year-round climate.

Daytime high
28°
4th warmest
Overnight low
20°
10th coldest
Rainfall
244 mm
20.1 wet days
Daylight
13 h 18 min
6:10 AM – 7:25 PM
Cloud cover
77%
11th clearest
Wind
9 km/h
5th windiest
Solar energy
5.45 kWh/m²
Travel score
4.6
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical December day in Viçosa reaches about 28°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°C. Set against its neighbours, December runs about 1°C warmer than November and about 1°C cooler than January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12719
22719
32719
42719
52719
62719
72719
82719
92820
102820
112820
122820
132820
142820
152820
162820
172820
182820
192820
202820
212820
222820
232820
242820
252820
262820
272820
282820
292820
302820
312820

Viçosa weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°22616.813.14.6
Feb29° / 20°11611.912.74.8
Mar28° / 19°13215.912.15.0
Apr27° / 18°609.611.56.5
May25° / 16°345.3117.5
Jun24° / 14°122.510.88.3
Jul24° / 14°82.110.98.5
Aug25° / 14°162.811.38.1
Sep27° / 16°537.511.97.0
Oct27° / 18°9211.112.56.1
Nov27° / 19°20618.2135.0
Dec28° / 20°24420.113.24.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% 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 77%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11684
21783
31783
41783
51783
61783
71783
81882
91882
101981
112080
122179
132278
142278
152476
162575
172575
182674
192773
202773
212872
222872
232872
242971
252773
262773
272773
282773
292674
302674
312773

Chance of precipitation in December

Any precipitation

Viçosa gets around 244 mm of rain over 20.1 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 65% and peaks near 67% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
166
267
367
467
567
667
767
867
966
1066
1166
1266
1366
1465
1565
1665
1765
1864
1964
2064
2164
2264
2364
2464
2564
2664
2764
2864
2964
3063
3163

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 69% of days. Sticky, muggy-or-worse air turns up on roughly 77% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1431605
2430606
3429616
4327637
5326647
6325648
7324658
8223678
9222679
10222679
11221689
12221689
13220699
14120709
15120709
16119719
17119728
18119728
19119728
20119728
21119728
22119728
23119728
24118738
25018748
26118738
27118738
28118738
29118738
30118738
31019729

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 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
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 12 min at the start of December to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:06 AM to 6:17 AM, and sunset from 7:16 PM to 7:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.26:067:16
213.26:067:17
313.26:067:18
413.26:077:18
513.26:077:19
613.26:077:19
713.26:077:20
813.26:087:21
913.26:087:21
1013.26:087:22
1113.26:087:22
1213.26:097:23
1313.26:097:24
1413.26:097:24
1513.36:107:25
1613.36:107:25
1713.36:107:26
1813.36:117:26
1913.36:117:27
2013.36:127:27
2113.36:127:28
2213.36:137:28
2313.36:137:29
2413.36:147:29
2513.36:147:30
2613.36:157:30
2713.36:157:31
2813.36:167:31
2913.36:167:31
3013.26:177:32
3113.26:177:32

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.45 kWh/m².

For context, solar energy here swings from a low near 3.53 kWh/m² to a high of 5.96 kWh/m² in February across the year — December's 5.45 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.3Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.4Bright
175.5Bright
185.5Bright
195.5Bright
205.6Bright
215.6Bright
225.6Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in December

Hazard calendar for Viçosa

In seasonPeak

In December, Viçosa sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Viçosa's monsoon runs November–March, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Viçosa?

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

4.6
Sightseeing
11th-best month of the year
5.1
Beach & pool
12th-best month of the year

December is a reasonable time to visit Viçosa for sightseeing.

What to pack for Viçosa in December

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

In December, Viçosa sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Viçosa in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Viçosa peaks around February 9 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 9UV 15Jun 22UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May7Very high
Jun7High
Jul7High
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Viçosa 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 Viçosa is worst in September — around 15 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (March, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1715 µg/m³Mar 168 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar8Good
Apr9Good
May10Good
Jun10Good
Jul10Good
Aug11Good
Sep15Moderate
Oct12Good
Nov9Good
Dec9Good
Location & terrain

Where is Viçosa?

Viçosa sits at 20.8°S, 42.9°W, 656 m above sea level, in Brazil. The nearest listed city is Ervália, 25 km away.

Topography around Viçosa

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

Within 3 km, the terrain around Viçosa has only modest variations in elevation — a maximum elevation change of 231 m around an average of 701 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 402 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,787 m.

The land around Viçosa is covered by trees (40%), grassland (35%) and artificial surfaces (24%) within 3 km, grassland (49%) and trees (46%) within 16 km, and grassland (57%) and trees (42%) within 80 km.

3 km
231 m
16 km
402 m
80 km
1,787 m
treesgrasslandcroplandartificial surfaces
December weather nearby: Ervália 25 km · Visconde do Rio Branco 29 km · Ponte Nova 38 km · Ubá 41 km · Piranga 44 km · Tocantins 49 km · Rio Pomba 66 km · Muriaé 68 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 Viçosa (-20.7539°, -42.8819°, elevation 656 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).