Janaúba weather in December

In December, Janaúba sees average daytime highs of 31°C and overnight lows near 21°C, with 156 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 31°C through the month. The sky is clear or mostly clear about 21% 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 Janaúba's 11th-clearest and 12th-windiest month. For the whole year in context, see Janaúba's year-round climate.

Daytime high
31°
8th warmest
Overnight low
21°
8th coldest
Rainfall
156 mm
13.4 wet days
Daylight
12 h 54 min
6:21 AM – 7:17 PM
Cloud cover
70%
11th clearest
Wind
7 km/h
12th windiest
Solar energy
5.98 kWh/m²
Travel score
4.1
out of 10

Janaúba 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 31°C through the month.

A typical December day in Janaúba reaches about 31°C in the afternoon and slips back to 21°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°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
53121
63121
73121
83121
93121
103121
113121
123121
133121
143121
153121
163121
173121
183121
193121
203121
213121
223121
233121
243121
253121
263121
273121
283121
293121
303121
313121

How December really feels in Janaúba

Once humidity and wind are folded in, December averages 25 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
25
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.

Janaúba 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°11210.412.84.2
Feb32° / 22°728.612.54.1
Mar31° / 22°9810.312.14.2
Apr31° / 21°335.111.75.0
May30° / 19°71.811.35.9
Jun29° / 18°10.211.16.8
Jul29° / 17°0011.27.0
Aug31° / 17°10.211.56.2
Sep33° / 19°81.511.94.7
Oct33° / 21°536.212.43.8
Nov31° / 21°14013.112.73.9
Dec31° / 21°15613.412.94.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% 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 66%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22674
32773
42872
52773
62773
72872
82773
92971
102971
113070
123070
133268
143268
153466
163466
173565
183664
193763
203862
213961
223961
233961
243961
253961
264060
274060
284060
294060
304060
314060

Chance of precipitation in December

Any precipitation

Janaúba gets around 156 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 50% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
149
250
350
450
550
650
750
850
949
1049
1148
1247
1346
1445
1543
1642
1741
1840
1939
2038
2137
2237
2336
2436
2536
2636
2736
2837
2937
3037
3137

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
105285116
205275117
315265018
415255019
515245119
615235120
715225121
815225121
916215121
1016215022
1116215121
1216215121
1316215121
1416225120
1517235019
1617245018
1717255017
1817265017
1917274916
2017284915
2117294915
2207304914
2306314914
2406314913
2506324913
2606324913
2706324913
2806324913
2905324914
3005324914
3105324914

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 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 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 6:17 AM to 6:29 AM, and sunset from 7:09 PM to 7:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:177:09
212.96:177:10
312.96:177:10
412.96:177:11
512.96:187:11
612.96:187:12
712.96:187:13
812.96:197:13
912.96:197:14
1012.96:197:14
1112.96:197:15
1212.96:207:15
1312.96:207:16
1412.96:217:16
1512.96:217:17
1612.96:217:17
1712.96:227:18
1812.96:227:18
1912.96:237:19
2012.96:237:19
2112.96:247:20
2212.96:247:20
2312.96:247:21
2412.96:257:21
2512.96:257:22
2612.96:267:22
2712.96:267:23
2812.96:277:23
2912.96:287:23
3012.96:287:24
3112.96:297:24

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.98 kWh/m².

For context, solar energy here swings from a low near 4.44 kWh/m² to a high of 6.4 kWh/m² in February across the year — December's 5.98 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.8Bright
115.8Bright
125.8Bright
135.9Bright
145.9Bright
156.0Bright
166.0Intense
176.0Intense
186.1Intense
196.1Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in December

Hazard calendar for Janaúba

In seasonPeak

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

Janaúba'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 Janaúba?

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

4.1
Sightseeing
9th-best month of the year
6.0
Beach & pool
11th-best month of the year

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

What to pack for Janaúba in December

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

In December, Janaúba sees daytime highs around 31°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 Janaúba 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 Janaúba peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 10UV 8
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme
Location & terrain

Where is Janaúba?

Janaúba sits at 15.8°S, 43.3°W, 539 m above sea level, in Brazil. The nearest listed city is Porteirinha, 31 km away.

Topography around Janaúba

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

Within 3 km, the terrain around Janaúba has only modest variations in elevation — a maximum elevation change of 83 m around an average of 532 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 531 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,297 m.

The land around Janaúba is covered by artificial surfaces (30%), trees (24%) and grassland (23%) within 3 km, trees (33%), grassland (32%) and shrubs (20%) within 16 km, and trees (39%), grassland (29%) and shrubs (21%) within 80 km.

3 km
83 m
16 km
531 m
80 km
1,297 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Porteirinha 31 km · Barreiro do Jaíba 37 km · Jaíba 65 km · São João da Ponte 76 km · Francisco Sá 77 km · Varzelândia 78 km · Rio Pardo de Minas 85 km · Monte Azul 86 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 Janaúba (-15.8025°, -43.3089°, elevation 539 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).