Rio Pomba weather in December

In December, Rio Pomba sees average daytime highs of 28°C and overnight lows near 20°C, with 278 mm of rain across 21.9 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 9% 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 Rio Pomba's 11th-clearest and 5th-windiest month. For the whole year in context, see Rio Pomba's year-round climate.

Daytime high
28°
4th warmest
Overnight low
20°
10th coldest
Rainfall
278 mm
21.9 wet days
Daylight
13 h 18 min
6:10 AM – 7:28 PM
Cloud cover
76%
11th clearest
Wind
7 km/h
5th windiest
Solar energy
5.45 kWh/m²
Travel score
4.2
out of 10

Rio Pomba 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 Rio Pomba reaches about 28°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 32°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)
12819
22819
32819
42819
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152820
162820
172820
182920
192920
202920
212920
222920
232920
242920
252920
262920
272920
282920
292920
302920
312920

Rio Pomba 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°2681913.24.2
Feb30° / 20°16814.512.74.4
Mar29° / 20°20018.112.24.6
Apr27° / 18°8611.311.56.2
May25° / 16°457117.2
Jun24° / 14°194.610.77.9
Jul24° / 14°194.710.88.0
Aug25° / 14°255.111.37.7
Sep26° / 16°681011.96.6
Oct27° / 18°12413.912.55.7
Nov27° / 19°24819.4134.8
Dec28° / 20°27821.913.34.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% 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 (%)
11882
21783
31783
41783
51783
61783
71783
81882
91882
101981
112080
122179
132377
142476
152476
162575
172773
182773
192773
202773
212872
222971
232872
242872
252773
262674
272476
282377
292377
302377
312278

Chance of precipitation in December

Any precipitation

Rio Pomba gets around 278 mm of rain over 21.9 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 70% and peaks near 72% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
170
270
371
471
572
672
772
871
971
1071
1171
1270
1370
1470
1569
1669
1769
1869
1969
2069
2169
2269
2369
2469
2570
2670
2770
2870
2970
3070
3169

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 72% of days. Sticky, muggy-or-worse air turns up on roughly 86% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
13236311
23226411
33216412
43196513
52186713
62176714
72176714
82166814
92156914
102147014
111147114
121137214
131137214
141127314
151127413
161117513
170117613
180117613
190107614
200107614
210107614
22097714
23097615
24097615
25087616
26087616
27087517
28087517
29097318
30097318
31097318

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

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
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 6:18 AM, and sunset from 7:19 PM to 7:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.26:067:19
213.26:077:19
313.26:077:20
413.26:077:20
513.26:077:21
613.26:077:22
713.26:077:22
813.36:087:23
913.36:087:24
1013.36:087:24
1113.36:097:25
1213.36:097:25
1313.36:097:26
1413.36:097:26
1513.36:107:27
1613.36:107:28
1713.36:117:28
1813.36:117:29
1913.36:117:29
2013.36:127:30
2113.36:127:30
2213.36:137:31
2313.36:137:31
2413.36:147:31
2513.36:147:32
2613.36:157:32
2713.36:157:33
2813.36:167:33
2913.36:167:34
3013.36:177:34
3113.36:187:34

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 3.47 kWh/m² to a high of 5.94 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
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.3Bright
115.3Bright
125.3Bright
135.4Bright
145.4Bright
155.4Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in December

Hazard calendar for Rio Pomba

In seasonPeak

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

Rio Pomba'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 Rio Pomba?

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

4.2
Sightseeing
11th-best month of the year
4.9
Beach & pool
11th-best month of the year

December is a reasonable time to visit Rio Pomba for sightseeing.

What to pack for Rio Pomba in December

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

In December, Rio Pomba sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Rio Pomba 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 Rio Pomba peaks around February 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 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 highExtremeFeb 10UV 15Jun 20UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul7High
Aug9Very high
Sep9Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Rio Pomba 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 Rio Pomba is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (January, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1716 µg/m³Jan 19 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr9Good
May10Good
Jun10Good
Jul9Good
Aug11Good
Sep17Moderate
Oct12Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Rio Pomba?

Rio Pomba sits at 21.3°S, 43.2°W, 448 m above sea level, in Brazil. The nearest listed city is Tocantins, 20 km away.

Topography around Rio Pomba

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

Within 3 km, the terrain around Rio Pomba has only modest variations in elevation — a maximum elevation change of 240 m around an average of 485 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 606 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,390 m.

The land around Rio Pomba is covered by grassland (65%) and trees (26%) within 3 km, grassland (66%) and trees (33%) within 16 km, and grassland (61%) and trees (37%) within 80 km.

3 km
240 m
16 km
606 m
80 km
1,390 m
treesgrasslandcroplandartificial surfaces
December weather nearby: Tocantins 20 km · Ubá 30 km · São João Nepomuceno 34 km · Santos Dumont 44 km · Visconde do Rio Branco 46 km · Cataguases 52 km · Juiz de Fora 57 km · Barbacena 62 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 Rio Pomba (-21.2747°, -43.1792°, elevation 448 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).