Porteirinha weather in December

In December, Porteirinha sees average daytime highs of 30°C and overnight lows near 21°C, with 126 mm of rain across 13.4 wet days and about 12.9 hours of daylight. It is the 8th-warmest and 1st-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 19% of the time in December, and the air most often feels muggy.

Daylight stretches from about 12 h 54 min at the start of December to 12 h 54 min by month's end. Set against the rest of the year, December is Porteirinha's 11th-clearest and 12th-windiest month. For the whole year in context, see Porteirinha's year-round climate.

Daytime high
30°
8th warmest
Overnight low
21°
9th coldest
Rainfall
126 mm
13.4 wet days
Daylight
12 h 54 min
6:20 AM – 7:16 PM
Cloud cover
71%
11th clearest
Wind
7 km/h
12th windiest
Solar energy
5.94 kWh/m²
Travel score
4.5
out of 10

Porteirinha is 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 Porteirinha reaches about 30°C in the afternoon and slips back to 21°C overnight — a 10°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 on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53021
63021
73021
83021
93021
103021
113021
123021
133021
143021
153021
163021
173021
183021
193021
203021
213021
223021
233021
243021
253021
263021
273021
283021
293021
303021
313021

How December really feels in Porteirinha

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.

Porteirinha weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°981112.84.5
Feb31° / 21°678.212.54.5
Mar31° / 21°821012.14.6
Apr30° / 20°314.811.75.5
May29° / 18°61.611.36.5
Jun28° / 17°10.211.17.4
Jul28° / 16°00.111.27.7
Aug30° / 16°10.211.56.8
Sep32° / 18°71.411.95.3
Oct32° / 20°435.912.44.3
Nov30° / 21°11812.612.74.3
Dec30° / 21°12613.412.94.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% 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 67%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22575
32674
42773
52773
62773
72872
82872
92773
102971
112971
122971
133169
143169
153268
163367
173466
183565
193664
203763
213862
223862
233862
243862
253862
263961
273862
283862
293862
303961
313961

Chance of precipitation in December

Any precipitation

Porteirinha gets around 126 mm of rain over 13.4 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 43% and peaks near 48% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
147
248
348
448
548
648
748
848
948
1047
1147
1246
1346
1445
1544
1643
1742
1841
1940
2040
2139
2239
2338
2438
2538
2638
2738
2838
2938
3038
3138

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 51% of days. Sticky, muggy-or-worse air turns up on roughly 54% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11935532
21934542
31833553
41832563
51831573
61831573
71830583
81829593
92829583
102829583
112929573
122929573
132930563
142931553
152932543
162933542
1711035522
1811036512
1911038492
2011039482
2111040472
2211041462
2311042462
241943452
251943452
260944452
270944442
280944443
290944443
300944443
310943443

Wind in December

Winds average 7 km/h in December, the calmest month.

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
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 54 min at the start of December to 12 h 54 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 6:16 AM to 6:28 AM, and sunset from 7:08 PM to 7:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:167:08
212.96:167:08
312.96:167:09
412.96:167:10
512.96:177:10
612.96:177:11
712.96:177:11
812.96:187:12
912.96:187:12
1012.96:187:13
1112.96:187:14
1212.96:197:14
1312.96:197:15
1412.96:207:15
1512.96:207:16
1612.96:207:16
1712.96:217:17
1812.96:217:17
1912.96:227:18
2012.96:227:18
2112.96:237:19
2212.96:237:19
2312.96:237:20
2412.96:247:20
2512.96:247:21
2612.96:257:21
2712.96:257:21
2812.96:267:22
2912.96:277:22
3012.96:277:23
3112.96:287:23

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.94 kWh/m².

For context, solar energy here swings from a low near 4.42 kWh/m² to a high of 6.37 kWh/m² in October across the year — December's 5.94 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.9Bright
155.9Bright
166.0Bright
176.0Intense
186.0Intense
196.1Intense
206.1Intense
216.1Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in December

Hazard calendar for Porteirinha

In seasonPeak

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

Porteirinha's rainy season runs November–March, when most of the year's rain falls.

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

Is December a good time to visit Porteirinha?

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

4.5
Sightseeing
8th-best month of the year
6.1
Beach & pool
11th-best month of the year

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

What to pack for Porteirinha in December

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

In December, Porteirinha sees daytime highs around 30°C and nights near 21°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Porteirinha 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 Porteirinha peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 16UV 15Jul 11UV 8
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Porteirinha?

Porteirinha sits at 15.7°S, 43.0°W, 570 m above sea level, in Brazil. The nearest listed city is Janaúba, 31 km away.

Topography around Porteirinha

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

Within 3 km, the terrain around Porteirinha has significant variations in elevation — a maximum elevation change of 270 m around an average of 614 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 756 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,324 m.

The land around Porteirinha is covered by grassland (38%) and trees (30%) within 3 km, grassland (48%) and trees (29%) within 16 km, and trees (42%), grassland (27%) and shrubs (22%) within 80 km.

3 km
270 m
16 km
756 m
80 km
1,324 m
treesshrubsgrasslandcroplandartificial surfaces
December weather nearby: Janaúba 31 km · Rio Pardo de Minas 54 km · Barreiro do Jaíba 62 km · Monte Azul 67 km · Jaíba 83 km · Taiobeiras 85 km · Salinas 92 km · Espinosa 94 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 Porteirinha (-15.7433°, -43.0283°, elevation 570 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).