Visconde do Rio Branco weather in December

In December, Visconde do Rio Branco sees average daytime highs of 28°C and overnight lows near 20°C, with 261 mm of rain across 21.1 wet days and about 13.3 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 18 min by month's end. Set against the rest of the year, December is Visconde do Rio Branco's 11th-clearest and 4th-windiest month. For the whole year in context, see Visconde do Rio Branco's year-round climate.

Daytime high
28°
4th warmest
Overnight low
20°
10th coldest
Rainfall
261 mm
21.1 wet days
Daylight
13 h 18 min
6:09 AM – 7:26 PM
Cloud cover
76%
11th clearest
Wind
7 km/h
4th windiest
Solar energy
5.49 kWh/m²
Travel score
4.5
out of 10

Visconde do Rio Branco 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 28°C through the month.

A typical December day in Visconde do Rio Branco 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
92819
102820
112820
122820
132820
142820
152820
162820
172820
182820
192820
202820
212820
222820
232820
242820
252820
262820
272820
282820
292820
302820
312820

Visconde do Rio Branco 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°2361913.14.3
Feb29° / 20°14814.512.74.5
Mar28° / 19°1731812.14.8
Apr27° / 18°8211.611.56.3
May25° / 15°416.8117.4
Jun24° / 14°153.410.78.2
Jul24° / 13°153.710.98.2
Aug25° / 14°213.911.38.0
Sep26° / 16°668.311.96.9
Oct27° / 18°11412.812.55.9
Nov27° / 19°23919.1134.9
Dec28° / 20°26121.113.34.5

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 12% of December, with mostly cloudy or overcast conditions the remaining 78%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11585
21585
31585
41684
51684
61684
71684
81684
91783
101882
111882
121981
132080
142278
152278
162377
172476
182575
192575
202872
212872
222872
232872
242872
252872
262872
272773
282674
292674
302674
312674

Chance of precipitation in December

Any precipitation

Visconde do Rio Branco gets around 261 mm of rain over 21.1 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 67% and peaks near 69% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
167
268
368
469
569
669
769
869
969
1069
1169
1268
1368
1468
1567
1667
1767
1866
1966
2066
2166
2266
2366
2467
2567
2667
2767
2867
2967
3067
3167

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 73% of days. Sticky, muggy-or-worse air turns up on roughly 84% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1425647
2424648
3423658
4322669
53206710
63196810
73186910
83176911
92177011
102167111
112157211
122147311
131147411
141137511
151137511
161127611
171127611
181127611
191127611
200117811
210117811
220117811
230117811
240107911
250107911
260107911
270117811
280117712
290117712
300117712
310127612

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 12 min at the start of December to 13 h 18 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 6:06 AM to 6:17 AM, and sunset from 7:17 PM to 7:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.26:067:17
213.26:067:17
313.26:067:18
413.26:067:19
513.26:067:19
613.26:067:20
713.26:077:20
813.26:077:21
913.26:077:22
1013.26:077:22
1113.36:087:23
1213.36:087:23
1313.36:087:24
1413.36:097:25
1513.36:097:25
1613.36:097:26
1713.36:107:26
1813.36:107:27
1913.36:117:27
2013.36:117:28
2113.36:127:28
2213.36:127:29
2313.36:127:29
2413.36:137:30
2513.36:137:30
2613.36:147:30
2713.36:147:31
2813.36:157:31
2913.36:167:32
3013.36:167:32
3113.36:177:32

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.49 kWh/m².

For context, solar energy here swings from a low near 3.49 kWh/m² to a high of 5.92 kWh/m² in February across the year — December's 5.49 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.4Bright
145.4Bright
155.5Bright
165.5Bright
175.5Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.7Bright
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 Visconde do Rio Branco

In seasonPeak

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

Visconde do Rio Branco'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 Visconde do Rio Branco?

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
5.0
Beach & pool
11th-best month of the year

December is a reasonable time to visit Visconde do Rio Branco for sightseeing.

What to pack for Visconde do Rio Branco in December

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

In December, Visconde do Rio Branco sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Visconde do Rio Branco 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 Visconde do Rio Branco peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 24UV 15Jun 22UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul7High
Aug8Very high
Sep9Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Visconde do Rio Branco 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 Visconde do Rio Branco 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 Visconde do Rio Branco?

Visconde do Rio Branco sits at 21.0°S, 42.8°W, 343 m above sea level, in Brazil. The nearest listed city is Ubá, 16 km away.

Topography around Visconde do Rio Branco

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Visconde do Rio Branco.

Within 3 km, the terrain around Visconde do Rio Branco has only modest variations in elevation — a maximum elevation change of 164 m around an average of 375 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 644 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,843 m.

The land around Visconde do Rio Branco is covered by grassland (66%) within 3 km, grassland (71%) and trees (26%) within 16 km, and grassland (61%) and trees (38%) within 80 km.

3 km
164 m
16 km
644 m
80 km
1,843 m
treesgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Ubá 16 km · Tocantins 26 km · Ervália 27 km · Viçosa 29 km · Cataguases 45 km · Rio Pomba 46 km · Muriaé 51 km · Piranga 60 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 Visconde do Rio Branco (-21.0103°, -42.8406°, elevation 343 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).