Boa Vista weather in January

In January, Boa Vista sees average daytime highs of 33°C and overnight lows near 24°C, with 34 mm of rain across 6.7 wet days and about 11.9 hours of daylight. It is the 5th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 13% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of January to 11 h 54 min by month's end. Set against the rest of the year, January is Boa Vista's 7th-clearest and 2nd-windiest month. For the whole year in context, see Boa Vista's year-round climate.

Daytime high
33°
5th warmest
Overnight low
24°
10th coldest
Rainfall
34 mm
6.7 wet days
Daylight
11 h 54 min
6:16 AM – 6:08 PM
Cloud cover
69%
7th clearest
Wind
11 km/h
2nd windiest
Solar energy
5.16 kWh/m²
Travel score
3.8
out of 10

Boa Vista is human settlement in Brazil, Roraima.

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 33°C through the month.

A typical January day in Boa Vista reaches about 33°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 31°C and 35°C. Set against its neighbours, January runs on par with December and on par with February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73324
83324
93324
103324
113324
123324
133324
143324
153324
163324
173324
183324
193324
203325
213325
223325
233325
243325
253325
263325
273325
283325
293325
303325
313325

How January really feels in Boa Vista

Once humidity and wind are folded in, January 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 January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Boa Vista weather by month

How January compares with the rest of the year at a glance. January is the 5th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 24°346.711.93.8
Feb33° / 25°315.711.93.6
Mar33° / 25°599.2123.2
Apr32° / 24°20017.412.13.1
May30° / 24°34426.412.13.0
Jun29° / 23°31027.312.23.1
Jul29° / 23°24926.712.13.3
Aug31° / 23°15622.312.13.4
Sep32° / 24°9415.4123.5
Oct33° / 24°7112.811.93.3
Nov33° / 24°9013.611.93.2
Dec32° / 24°5810.211.83.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 21% of January, with mostly cloudy or overcast conditions the remaining 66%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23763
33664
43664
53664
63565
73565
83565
93565
103466
113466
123565
133565
143565
153565
163367
173367
183367
193367
203268
213268
223268
233268
243268
253169
263169
273169
283268
293268
303268
313367

Chance of precipitation in January

Any precipitation

Boa Vista gets around 34 mm of rain over 6.7 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 22% and peaks near 25% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
125
224
324
423
522
622
722
822
922
1022
1122
1222
1322
1422
1521
1621
1721
1821
1921
2021
2121
2221
2321
2421
2521
2621
2721
2821
2921
3021
3121

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 89% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1344521
2446501
3447491
4448471
5549460
6551440
7651430
8652420
9752410
10753400
11854380
12855370
13955360
141054351
151055341
161155331
171255321
181256311
191355311
201454311
211455301
221554301
231553311
241653310
251653310
261653310
271751320
281751320
291750330
301750330
311749340

Wind in January

Winds average 11 km/h in January.

Across January, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 48 min at the start of January to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 6:11 AM to 6:20 AM, and sunset from 6:01 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:116:01
211.86:116:02
311.86:126:02
411.86:126:02
511.86:126:03
611.86:136:03
711.86:136:04
811.86:146:04
911.86:146:05
1011.86:146:05
1111.86:156:06
1211.86:156:06
1311.86:156:06
1411.96:166:07
1511.96:166:07
1611.96:166:08
1711.96:176:08
1811.96:176:08
1911.96:176:09
2011.96:186:09
2111.96:186:09
2211.96:186:10
2311.96:186:10
2411.96:196:10
2511.96:196:11
2611.96:196:11
2711.96:196:11
2811.96:196:12
2911.96:196:12
3011.96:206:12
3111.96:206:12

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.16 kWh/m².

For context, solar energy here swings from a low near 3.8 kWh/m² to a high of 5.72 kWh/m² in October across the year — January's 5.16 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.2Bright
315.2Bright
Planning a trip in January

Hazard calendar for Boa Vista

In seasonPeak

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

Boa Vista'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 January a good time to visit Boa Vista?

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

3.8
Sightseeing
1st-best month of the year
6.5
Beach & pool
1st-best month of the year

January is a weaker month for outdoor sightseeing in Boa Vista. The water and warmth also suit a beach or pool day.

What to pack for Boa Vista in January

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

In January, Boa Vista sees daytime highs around 33°C and nights near 24°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Boa Vista 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 Boa Vista peaks around March 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 17 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 20UV 15Nov 17UV 11
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr14Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Boa Vista 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 Boa Vista is worst in March — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (August, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 2222 µg/m³Aug 2212 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb19Moderate
Mar23Moderate
Apr22Moderate
May15Moderate
Jun13Moderate
Jul12Moderate
Aug12Good
Sep12Good
Oct13Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Boa Vista?

Boa Vista sits at 2.8°N, 60.7°W, 82 m above sea level, in Brazil. The nearest listed city is Cantá, 25 km away.

Topography around Boa Vista

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

Within 3 km, the terrain around Boa Vista has only modest variations in elevation — a maximum elevation change of 29 m around an average of 75 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 130 m; within 80 km, large variations in elevation — a maximum elevation change of 1,011 m.

The land around Boa Vista is covered by artificial surfaces (50%) within 3 km, grassland (67%) within 16 km, and grassland (56%) and trees (41%) within 80 km.

3 km
29 m
16 km
130 m
80 km
1,011 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Cantá 25 km · Mucajaí 50 km · Alto Alegre 92 km · Lethem 115 km · Caracaraí 123 km · Pacaraima 187 km · Santa Elena de Uairén 204 km · Rorainópolis 210 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 Boa Vista (2.8197°, -60.6733°, elevation 82 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).