Barras weather in December

In December, Barras sees average daytime highs of 36°C and overnight lows near 26°C, with 68 mm of rain across 7.9 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 37°C in the first days to 35°C by the end. The sky is clear or mostly clear about 24% of the time in December, and the air most often feels muggy.

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 Barras's 7th-clearest and 5th-windiest month. For the whole year in context, see Barras's year-round climate.

Daytime high
36°
4th warmest
Overnight low
26°
11th coldest
Rainfall
68 mm
7.9 wet days
Daylight
12 h 12 min
5:38 AM – 5:53 PM
Cloud cover
62%
7th clearest
Wind
9 km/h
5th windiest
Solar energy
6.01 kWh/m²
Travel score
2.1
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 37°C in the first days to 35°C by the end.

A typical December day in Barras reaches about 36°C in the afternoon and slips back to 26°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 39°C. Set against its neighbours, December runs about 1°C cooler than November and about 3°C warmer than January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13726
23726
33726
43726
53726
63726
73726
83726
93726
103626
113626
123626
133626
143626
153626
163626
173626
183626
193626
203625
213625
223625
233625
243525
253525
263525
273525
283525
293525
303525
313525

How December really feels in Barras

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
22 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.

Barras 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°22119.712.22.5
Feb32° / 24°28121.412.12.6
Mar32° / 23°38726.1122.5
Apr32° / 23°33924.711.92.7
May32° / 24°15214.511.83.4
Jun33° / 24°244.711.84.0
Jul34° / 24°102.111.83.8
Aug35° / 24°20.511.93.0
Sep37° / 25°20.4122.1
Oct37° / 26°111.112.11.7
Nov37° / 26°183.212.21.7
Dec36° / 26°687.912.22.1

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 23% of December, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35545
45446
55446
65446
75446
85248
95248
105248
115149
125149
135050
144951
154951
164852
174852
184753
194555
204555
214456
224456
234456
244357
254357
264357
274159
284159
294159
303961
313862

Chance of precipitation in December

Any precipitation

Barras gets around 68 mm of rain over 7.9 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 26% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
113
213
314
414
515
616
717
818
918
1019
1120
1221
1322
1423
1524
1625
1726
1827
1928
2029
2131
2232
2333
2434
2536
2637
2739
2841
2942
3044
3146

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 86% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
112157210
212157210
312058210
412058210
511958220
611958220
711857231
811758231
911757241
1011657251
1111656261
1201556281
1301456291
1401455301
1501354321
1601353331
1701351351
1801250371
1901249391
2001147401
2101146421
2201144441
2301043461
240941491
250939511
260837541
270736561
280734581
290632611
300531631
310529642

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
288calm
298calm
308calm
318calm

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 5:32 AM to 5:45 AM, and sunset from 5:46 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:325:46
212.25:325:46
312.25:335:47
412.25:335:47
512.25:335:48
612.25:345:48
712.25:345:48
812.25:355:49
912.25:355:49
1012.25:355:50
1112.25:365:50
1212.25:365:51
1312.25:375:51
1412.25:375:52
1512.25:385:52
1612.25:385:53
1712.25:385:53
1812.25:395:54
1912.25:395:54
2012.25:405:55
2112.25:405:55
2212.25:415:56
2312.25:415:56
2412.25:425:56
2512.25:425:57
2612.25:435:57
2712.25:435:58
2812.25:445:58
2912.25:445:59
3012.25:455:59
3112.25:456:00

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.01 kWh/m².

For context, solar energy here swings from a low near 4.98 kWh/m² to a high of 6.9 kWh/m² in October across the year — December's 6.01 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.1Intense
126.1Intense
136.1Intense
146.0Intense
156.0Intense
166.0Bright
176.0Bright
185.9Bright
195.9Bright
205.9Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in December

Hazard calendar for Barras

In seasonPeak

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

Barras's monsoon runs January–April, 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 Barras?

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

2.1
Sightseeing
9th-best month of the year
4.9
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Barras.

What to pack for Barras in December

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

In December, Barras sees daytime highs around 36°C and nights near 26°C. Pack light clothes and sun protection. About 8 days see rain.

light clothessun protection

UV index in Barras 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 Barras peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 14UV 15Jul 17UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Barras 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 Barras is worst in November — around 16 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (July, 4 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1816 µg/m³Jul 155 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb13Moderate
Mar12Moderate
Apr11Good
May8Good
Jun6Good
Jul4Good
Aug6Good
Sep7Good
Oct12Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Barras?

Barras sits at 4.2°S, 42.3°W, 89 m above sea level, in Brazil. The nearest listed city is Batalha, 34 km away.

Topography around Barras

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

Within 3 km, the terrain around Barras has only modest variations in elevation — a maximum elevation change of 35 m around an average of 93 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, significant variations in elevation — a maximum elevation change of 454 m.

The land around Barras is covered by grassland (34%), trees (32%) and shrubs (20%) within 3 km, trees (40%), grassland (38%) and shrubs (21%) within 16 km, and trees (55%) and grassland (24%) within 80 km.

3 km
35 m
16 km
67 m
80 km
454 m
treesshrubsgrasslandartificial surfaceswater
December weather nearby: Batalha 34 km · Esperantina 39 km · Piripiri 57 km · José de Freitas 65 km · Campo Maior 66 km · Miguel Alves 67 km · União 74 km · Piracuruca 74 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 Barras (-4.2444°, -42.2944°, elevation 89 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).