Mutum weather in December

In December, Mutum sees average daytime highs of 30°C and overnight lows near 21°C, with 216 mm of rain across 17 wet days and about 13.2 hours of daylight. It is the 4th-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 9% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 06 min at the start of December to 13 h 12 min by month's end. Set against the rest of the year, December is Mutum's 11th-clearest and 7th-windiest month. For the whole year in context, see Mutum's year-round climate.

Daytime high
30°
4th warmest
Overnight low
21°
10th coldest
Rainfall
216 mm
17 wet days
Daylight
13 h 12 min
6:06 AM – 7:18 PM
Cloud cover
78%
11th clearest
Wind
6 km/h
7th windiest
Solar energy
5.28 kWh/m²
Travel score
4.2
out of 10

Mutum 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 30°C through the month.

A typical December day in Mutum reaches about 30°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 26°C and 33°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)
12920
22920
32921
42921
52921
62921
72921
82921
92921
102921
112921
122921
132921
142921
153021
163021
173021
183021
193021
203021
213021
223021
233021
243021
253021
263021
273021
283021
293021
303021
313021

How December really feels in Mutum

Once humidity and wind are folded in, December averages 8 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
8
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.

Mutum 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
Jan30° / 21°14712.913.14.3
Feb31° / 21°809.312.74.4
Mar31° / 21°10812.612.14.4
Apr29° / 19°518.511.65.5
May27° / 17°244.111.17.2
Jun26° / 16°102.110.87.8
Jul26° / 15°82.110.97.9
Aug27° / 16°102.811.37.6
Sep28° / 17°295.111.96.5
Oct29° / 19°789.212.55.3
Nov29° / 20°16615.412.94.6
Dec30° / 21°2161713.24.2

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 13% 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
31486
41585
51585
61585
71585
81585
91585
101684
111882
121882
132080
142080
152179
162377
172377
182476
192674
202674
212773
222872
232872
242971
252872
262872
272872
282872
292872
302872
312872

Chance of precipitation in December

Any precipitation

Mutum gets around 216 mm of rain over 17 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 55% and peaks near 58% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
155
255
356
457
557
657
758
858
958
1058
1158
1258
1358
1458
1557
1656
1756
1855
1954
2054
2153
2252
2352
2452
2551
2651
2751
2850
2950
3049
3148

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 62% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11126522
21116424
31106425
41106227
5196228
6186229
7186130
8176131
9176032
10066232
11066133
12066133
13056233
14056233
15046333
16046333
17046333
18046333
19046333
20046333
21046333
22046333
23046333
24046333
25046234
26046234
27056134
28056134
29056134
30066034
31066034

Wind in December

Winds average 6 km/h in December.

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

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 06 min at the start of December to 13 h 12 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 6:02 AM to 6:13 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)
113.16:027:09
213.16:027:09
313.16:027:10
413.16:037:11
513.16:037:11
613.16:037:12
713.26:037:12
813.26:047:13
913.26:047:14
1013.26:047:14
1113.26:047:15
1213.26:057:15
1313.26:057:16
1413.26:057:17
1513.26:067:17
1613.26:067:18
1713.26:077:18
1813.26:077:19
1913.26:077:19
2013.26:087:20
2113.26:087:20
2213.26:097:21
2313.26:097:21
2413.26:107:22
2513.26:107:22
2613.26:117:22
2713.26:117:23
2813.26:127:23
2913.26:127:24
3013.26:137:24
3113.26:137:24

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.28 kWh/m².

For context, solar energy here swings from a low near 3.52 kWh/m² to a high of 6 kWh/m² in February across the year — December's 5.28 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.1Bright
105.1Bright
115.1Bright
125.2Bright
135.2Bright
145.2Bright
155.3Bright
165.3Bright
175.3Bright
185.4Bright
195.4Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in December

Hazard calendar for Mutum

In seasonPeak

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

Mutum's monsoon runs November–January, 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 Mutum?

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

4.2
Sightseeing
12th-best month of the year
5.6
Beach & pool
12th-best month of the year

December is a reasonable time to visit Mutum for sightseeing.

What to pack for Mutum in December

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

In December, Mutum sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Mutum 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 Mutum peaks around February 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 13UV 15Jun 22UV 7
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov14Extreme
Dec14Extreme
Location & terrain

Where is Mutum?

Mutum sits at 19.8°S, 41.4°W, 223 m above sea level, in Brazil. The nearest listed city is Ipanema, 29 km away.

Topography around Mutum

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

Within 3 km, the terrain around Mutum has significant variations in elevation — a maximum elevation change of 323 m around an average of 265 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,154 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,805 m.

The land around Mutum is covered by grassland (61%) and trees (34%) within 3 km, grassland (60%) and trees (39%) within 16 km, and trees (53%) and grassland (46%) within 80 km.

3 km
323 m
16 km
1,154 m
80 km
2,805 m
treesgrasslandartificial surfaces
December weather nearby: Ipanema 29 km · Lajinha 44 km · Afonso Cláudio 45 km · Ibatiba 49 km · Aimorés 52 km · Baixo Guandu 54 km · Resplendor 56 km · Iúna 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 Mutum (-19.8°, -41.4383°, elevation 223 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).