Barreiras weather in January

In January, Barreiras sees average daytime highs of 30°C and overnight lows near 21°C, with 139 mm of rain across 16.5 wet days and about 12.6 hours of daylight. It is the 9th-warmest and 4th-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 20% of the time in January, and the air most often feels muggy.

Daylight stretches from about 12 h 42 min at the start of January to 12 h 30 min by month's end. Set against the rest of the year, January is Barreiras's 10th-clearest and 10th-windiest month. For the whole year in context, see Barreiras's year-round climate.

Daytime high
30°
9th warmest
Overnight low
21°
9th coldest
Rainfall
139 mm
16.5 wet days
Daylight
12 h 36 min
5:50 AM – 6:29 PM
Cloud cover
70%
10th clearest
Wind
6 km/h
10th windiest
Solar energy
5.82 kWh/m²
Travel score
4.2
out of 10

Barreiras is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical January day in Barreiras 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 27°C and 33°C. Set against its neighbours, January runs on par with December and on par with February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53021
63021
73021
83021
93021
103021
113021
123021
133021
143021
153021
163021
173021
183021
193021
203021
213021
223021
233021
243021
253021
263021
273021
283021
293021
303021
313021

How January really feels in Barreiras

Once humidity and wind are folded in, January averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Barreiras weather by month

How January compares with the rest of the year at a glance. January is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°13916.512.64.2
Feb30° / 21°12015.712.44.2
Mar30° / 21°14216.512.14.2
Apr30° / 20°6810.211.74.8
May30° / 20°183.211.45.7
Jun30° / 18°20.311.36.4
Jul30° / 17°0011.46.5
Aug31° / 18°10.111.65.6
Sep33° / 20°81.111.94.2
Oct33° / 22°516.512.33.6
Nov31° / 21°15414.212.63.9
Dec30° / 21°14314.712.74.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 63%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23763
33763
43763
53763
63763
73763
83862
93862
103763
113763
123763
133664
143763
153763
163763
173763
183763
193763
203763
213763
223763
233763
243763
253763
263763
273763
283763
293763
303763
313664

Chance of precipitation in January

Any precipitation

Barreiras gets around 139 mm of rain over 16.5 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 54% and peaks near 56% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
150
251
351
452
552
652
752
851
951
1051
1152
1252
1352
1453
1553
1654
1754
1855
1955
2056
2156
2256
2356
2456
2556
2656
2756
2856
2956
3055
3155

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 83% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1217729
22177110
32167210
42167111
52167111
62167012
72157112
82157013
92157013
102156914
112156914
122156914
132156815
142156815
152156815
162156815
172156716
182146816
192146717
202146717
212146717
222146618
232146618
242146717
252146717
262136817
272136817
282127016
292127016
302127016
311127215

Wind in January

Winds average 6 km/h in January.

Across January, 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 January

DaylightNight

Daylight runs from about 12 h 42 min at the start of January to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over January. Sunrise moves from 5:42 AM to 5:57 AM, and sunset from 6:24 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:426:24
212.75:436:25
312.75:436:25
412.75:446:25
512.75:446:26
612.75:456:26
712.75:456:26
812.75:466:27
912.75:466:27
1012.75:476:27
1112.75:476:27
1212.75:486:28
1312.75:486:28
1412.75:496:28
1512.65:496:28
1612.65:506:29
1712.65:506:29
1812.65:516:29
1912.65:526:29
2012.65:526:29
2112.65:536:29
2212.65:536:29
2312.65:536:29
2412.65:546:29
2512.65:546:30
2612.65:556:30
2712.65:556:30
2812.65:566:30
2912.65:566:30
3012.55:576:29
3112.55:576:29

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.82 kWh/m².

For context, solar energy here swings from a low near 4.87 kWh/m² to a high of 6.5 kWh/m² in September across the year — January's 5.82 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in January

Hazard calendar for Barreiras

In seasonPeak

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

Barreiras'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 January a good time to visit Barreiras?

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

4.2
Sightseeing
6th-best month of the year
5.7
Beach & pool
11th-best month of the year

January is a reasonable time to visit Barreiras for sightseeing.

What to pack for Barreiras in January

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

In January, Barreiras 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 Barreiras in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Barreiras peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 18UV 15Jun 23UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr12Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov14Extreme
Dec13Extreme

Air quality in Barreiras in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Barreiras is worst in September — around 25 µg/m³ PM2.5 (moderate), about 5.7× the cleanest month (July, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 2324 µg/m³Jul 154 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar7Good
Apr6Good
May5Good
Jun5Good
Jul4Good
Aug6Good
Sep25Moderate
Oct24Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Barreiras?

Barreiras sits at 12.2°S, 45.0°W, 472 m above sea level, in Brazil. The nearest listed city is São Desidério, 23 km away.

Topography around Barreiras

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

Within 3 km, the terrain around Barreiras has significant variations in elevation — a maximum elevation change of 272 m around an average of 483 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 315 m; within 80 km, significant variations in elevation — a maximum elevation change of 397 m.

The land around Barreiras is covered by artificial surfaces (46%) and trees (24%) within 3 km, shrubs (40%) and trees (37%) within 16 km, and shrubs (48%) and trees (23%) within 80 km.

3 km
272 m
16 km
315 m
80 km
397 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: São Desidério 23 km · Riachão das Neves 46 km · Luis Eduardo Magalhães 87 km · Formosa do Rio Preto 125 km · Serra Dourada 132 km · Santa Rita de Cássia 137 km · Santana 138 km · Correntina 138 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 Barreiras (-12.1528°, -44.99°, elevation 472 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).