Mucajaí weather in December

In December, Mucajaí sees average daytime highs of 32°C and overnight lows near 24°C, with 81 mm of rain across 12.9 wet days and about 11.9 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 13% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of December to 11 h 54 min by month's end. Set against the rest of the year, December is Mucajaí's 6th-clearest and 4th-windiest month. For the whole year in context, see Mucajaí's year-round climate.

Daytime high
32°
7th warmest
Overnight low
24°
9th coldest
Rainfall
81 mm
12.9 wet days
Daylight
11 h 54 min
6:04 AM – 5:56 PM
Cloud cover
70%
6th clearest
Wind
7 km/h
4th windiest
Solar energy
4.92 kWh/m²
Travel score
3.8
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical December day in Mucajaí reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113224
123224
133224
143224
153224
163224
173124
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124
313124

How December really feels in Mucajaí

Once humidity and wind are folded in, December averages 31 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
31
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.

Mucajaí weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°467.811.94.1
Feb32° / 24°427.411.93.9
Mar33° / 24°7610.5123.5
Apr31° / 24°24218.812.13.3
May30° / 23°39227.712.13.0
Jun29° / 23°35028.212.13.0
Jul29° / 22°27728.712.13.1
Aug30° / 23°19225.412.13.1
Sep32° / 23°11418123.4
Oct32° / 24°9114.711.93.4
Nov32° / 24°11216.211.93.3
Dec32° / 24°8112.911.93.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 22% of December, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23466
33565
43367
53367
63367
73466
83367
93367
103367
113466
123466
133466
143466
153367
163367
173466
183466
193466
203466
213466
223466
233565
243664
253664
263763
273763
283763
293763
303763
313763

Chance of precipitation in December

Any precipitation

Mucajaí gets around 81 mm of rain over 12.9 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 42% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
146
245
344
444
543
642
742
841
941
1041
1142
1242
1342
1443
1543
1644
1744
1845
1945
2045
2144
2244
2343
2442
2540
2639
2738
2836
2935
3033
3132

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the oppressive band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1087418
2087517
3097417
40107416
50107515
60117415
70127414
80137413
90147412
100157312
110167311
120177211
130187210
140197110
15020719
16020719
17021709
18022708
19023698
20023707
21024697
22025687
23126676
24127666
25128665
26129655
27130654
28130654
29131644
30132643
31133633

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 54 min at the start of December to 11 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 5:57 AM to 6:11 AM, and sunset from 5:49 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:575:49
211.95:585:50
311.95:585:50
411.95:595:51
511.95:595:51
611.95:595:51
711.96:005:52
811.96:005:52
911.96:015:53
1011.96:015:53
1111.96:025:53
1211.96:025:54
1311.96:035:54
1411.96:035:55
1511.96:045:55
1611.96:045:56
1711.96:045:56
1811.96:055:57
1911.96:055:57
2011.96:065:57
2111.96:065:58
2211.96:075:58
2311.96:075:59
2411.96:085:59
2511.96:086:00
2611.96:096:00
2711.96:096:01
2811.96:106:01
2911.96:106:02
3011.96:116:02
3111.96:116:03

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.92 kWh/m².

For context, solar energy here swings from a low near 3.69 kWh/m² to a high of 5.6 kWh/m² in October across the year — December's 4.92 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in December

Hazard calendar for Mucajaí

In seasonPeak

None of Mucajaí's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Mucajaí's monsoon runs April–August, 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 Mucajaí?

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

3.8
Sightseeing
3rd-best month of the year
5.9
Beach & pool
4th-best month of the year

December is a weaker month for outdoor sightseeing in Mucajaí.

What to pack for Mucajaí in December

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

In December, Mucajaí sees daytime highs around 32°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Mucajaí in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mucajaí peaks around March 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 16 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 21UV 15Nov 16UV 11
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr14Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov11Extreme
Dec11Extreme

Air quality in Mucajaí 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 Mucajaí is worst in March — around 31 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (July, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1830 µg/m³Jul 2111 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb21Moderate
Mar31Moderate
Apr25Moderate
May14Moderate
Jun12Good
Jul11Good
Aug12Good
Sep12Moderate
Oct13Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Mucajaí?

Mucajaí sits at 2.4°N, 60.9°W, 83 m above sea level, in Brazil. The nearest listed city is Cantá, 40 km away.

Topography around Mucajaí

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

Within 3 km, the terrain around Mucajaí has only modest variations in elevation — a maximum elevation change of 108 m around an average of 83 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 296 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,406 m.

The land around Mucajaí is covered by grassland (59%) and trees (33%) within 3 km, trees (61%) and grassland (33%) within 16 km, and trees (64%) and grassland (33%) within 80 km.

3 km
108 m
16 km
296 m
80 km
1,406 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Cantá 40 km · Boa Vista 50 km · Caracaraí 73 km · Alto Alegre 83 km · Lethem 161 km · Rorainópolis 175 km · Pacaraima 223 km · Santa Elena de Uairén 241 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 Mucajaí (2.4399°, -60.9115°, elevation 83 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).