Mata Roma weather in December

In December, Mata Roma sees average daytime highs of 35°C and overnight lows near 25°C, with 55 mm of rain across 8.2 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 36°C in the first days to 34°C by the end. The sky is clear or mostly clear about 24% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of December to 12 h 12 min by month's end. Set against the rest of the year, December is Mata Roma's 7th-clearest and 4th-windiest month. For the whole year in context, see Mata Roma's year-round climate.

Daytime high
35°
4th warmest
Overnight low
25°
12th coldest
Rainfall
55 mm
8.2 wet days
Daylight
12 h 12 min
5:42 AM – 5:55 PM
Cloud cover
63%
7th clearest
Wind
13 km/h
4th windiest
Solar energy
5.74 kWh/m²
Travel score
2.6
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 36°C in the first days to 34°C by the end.

A typical December day in Mata Roma reaches about 35°C in the afternoon and slips back to 25°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 37°C. Set against its neighbours, December runs about 1°C cooler than November and about 2°C warmer than January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13625
23625
33625
43625
53625
63625
73525
83525
93525
103525
113525
123525
133525
143525
153525
163525
173525
183525
193525
203525
213525
223525
233525
243425
253425
263425
273425
283425
293425
303425
313425

How December really feels in Mata Roma

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
11 feel dangerously hot (≥ 39°C)
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.

Mata Roma weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 24°1752012.22.8
Feb31° / 24°22922.612.12.8
Mar31° / 23°28227.5122.6
Apr31° / 23°28025.211.92.8
May31° / 23°17318.511.83.5
Jun31° / 23°408.511.84.5
Jul32° / 23°203.811.84.5
Aug34° / 24°40.911.93.8
Sep36° / 24°20.6122.9
Oct36° / 25°111.312.12.4
Nov36° / 25°223.112.22.4
Dec35° / 25°558.212.22.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35347
45347
55347
65248
75248
85248
95149
105050
115050
124951
134753
144654
154654
164555
174456
184357
194258
204159
214159
224060
234060
243961
253961
263961
273862
283862
293862
303862
313763

Chance of precipitation in December

Any precipitation

Mata Roma gets around 55 mm of rain over 8.2 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 27% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
114
214
315
415
516
616
717
818
919
1020
1120
1221
1322
1423
1524
1625
1727
1828
1929
2030
2131
2232
2334
2435
2536
2638
2739
2841
2943
3044
3146

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 59% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1257410
2256420
3255430
4254440
5253450
6251461
7250471
8250481
9149491
10148501
11146521
12145531
13144541
14143551
15141571
16140581
17139591
18138601
19136621
20135631
21134641
22132661
23131671
24130681
25128701
26127711
27126721
28124741
29123751
30122761
31021781

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712calm
2812calm
2912calm
3012calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 12 min at the start of December to 12 h 12 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 5:36 AM to 5:49 AM, and sunset from 5:48 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:365:48
212.25:375:48
312.25:375:49
412.25:375:49
512.25:385:50
612.25:385:50
712.25:395:51
812.25:395:51
912.25:395:52
1012.25:405:52
1112.25:405:53
1212.25:415:53
1312.25:415:53
1412.25:415:54
1512.25:425:54
1612.25:425:55
1712.25:435:55
1812.25:435:56
1912.25:445:56
2012.25:445:57
2112.25:455:57
2212.25:455:58
2312.25:465:58
2412.25:465:59
2512.25:475:59
2612.25:476:00
2712.25:476:00
2812.25:486:00
2912.25:486:01
3012.25:496:01
3112.25:496:02

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.74 kWh/m².

For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 6.61 kWh/m² in October across the year — December's 5.74 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.0Intense
36.0Intense
46.0Intense
56.0Intense
66.0Bright
76.0Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in December

Hazard calendar for Mata Roma

In seasonPeak

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

Mata Roma's monsoon runs January–May, 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 Mata Roma?

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

2.6
Sightseeing
9th-best month of the year
5.5
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Mata Roma.

What to pack for Mata Roma in December

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

In December, Mata Roma sees daytime highs around 35°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Mata Roma 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 Mata Roma peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Jul 14UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct11Extreme
Nov11Extreme
Dec11Extreme

Air quality in Mata Roma 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 Mata Roma is worst in November — around 21 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (June, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1920 µg/m³Jun 119 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar14Moderate
Apr12Moderate
May9Good
Jun9Good
Jul12Moderate
Aug10Good
Sep10Good
Oct15Moderate
Nov21Moderate
Dec19Moderate
Location & terrain

Where is Mata Roma?

Mata Roma sits at 3.6°S, 43.1°W, 77 m above sea level, in Brazil. The nearest listed city is Chapadinha, 31 km away.

Topography around Mata Roma

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

Within 3 km, the terrain around Mata Roma has only modest variations in elevation — a maximum elevation change of 36 m around an average of 85 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 68 m; within 80 km, only modest variations in elevation — a maximum elevation change of 138 m.

The land around Mata Roma is covered by trees (61%) within 3 km, trees (60%) within 16 km, and trees (74%) within 80 km.

3 km
36 m
16 km
68 m
80 km
138 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Chapadinha 31 km · Brejo 41 km · Buriti 41 km · São Benedito do Rio Preto 57 km · Urbano Santos 57 km · Santa Quitéria do Maranhão 63 km · Miguel Alves 65 km · Coelho Neto 71 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 Mata Roma (-3.625°, -43.1111°, elevation 77 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).