Uarini weather in January

In January, Uarini sees average daytime highs of 31°C and overnight lows near 24°C, with 268 mm of rain across 26 wet days and about 12.2 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 2% of the time in January, and the air most often feels miserable.

Daylight stretches from about 12 h 12 min at the start of January to 12 h 06 min by month's end. Set against the rest of the year, January is Uarini's 8th-clearest and 3rd-windiest month. For the whole year in context, see Uarini's year-round climate.

Daytime high
31°
6th warmest
Overnight low
24°
8th coldest
Rainfall
268 mm
26 wet days
Daylight
12 h 12 min
6:25 AM – 6:34 PM
Cloud cover
86%
8th clearest
Wind
5 km/h
3rd windiest
Solar energy
4.58 kWh/m²
Travel score
2.8
out of 10

Uarini 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 31°C through the month.

A typical January day in Uarini reaches about 31°C in the afternoon and slips back to 24°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103024
113024
123024
133024
143024
153024
163024
173024
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124
313124

How January really feels in Uarini

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.

Uarini weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°2682612.22.8
Feb31° / 24°24623.612.12.8
Mar30° / 24°32627.9122.7
Apr30° / 24°34627.711.92.7
May30° / 24°35029.111.92.7
Jun30° / 23°22126.311.83.1
Jul30° / 23°15423.811.83.4
Aug31° / 24°13522.511.93.2
Sep32° / 24°15523122.9
Oct32° / 24°18224.612.12.7
Nov31° / 24°21525.712.12.6
Dec31° / 24°26428.412.22.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 7% of January, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1892
2892
3892
4892
5892
6892
7892
8892
9892
10892
11892
12892
13892
14892
15892
16892
17892
18892
19991
20991
21991
22991
23991
24991
25892
26892
27892
28991
29991
30991
31991

Chance of precipitation in January

Any precipitation

Uarini gets around 268 mm of rain over 26 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 85% and peaks near 88% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
188
287
387
486
586
686
786
886
985
1085
1186
1286
1386
1486
1586
1686
1785
1885
1985
2084
2184
2284
2383
2483
2583
2682
2782
2882
2982
3081
3181

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the miserable band about 77% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11783
21882
31882
41981
52080
62080
72179
82278
92377
102377
112476
122575
132575
142575
152674
162674
172674
182575
192575
202575
212476
222476
232476
242377
252377
262377
272377
282476
292476
302476
312575

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 12 min at the start of January to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over January. Sunrise moves from 6:18 AM to 6:30 AM, and sunset from 6:29 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:186:29
212.26:196:29
312.26:196:30
412.26:206:30
512.26:206:30
612.26:216:31
712.26:216:31
812.26:226:32
912.26:226:32
1012.26:236:32
1112.26:236:33
1212.26:236:33
1312.26:246:33
1412.26:246:34
1512.26:256:34
1612.26:256:34
1712.26:256:35
1812.26:266:35
1912.26:266:35
2012.16:276:36
2112.16:276:36
2212.16:276:36
2312.16:286:36
2412.16:286:36
2512.16:286:37
2612.16:296:37
2712.16:296:37
2812.16:296:37
2912.16:296:37
3012.16:306:38
3112.16:306:38

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.58 kWh/m².

For context, solar energy here swings from a low near 3.74 kWh/m² to a high of 5.29 kWh/m² in October across the year — January's 4.58 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in January

Is January a good time to visit Uarini?

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

2.8
Sightseeing
5th-best month of the year
4.0
Beach & pool
7th-best month of the year

January is a weaker month for outdoor sightseeing in Uarini.

What to pack for Uarini in January

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

In January, Uarini sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

UV index in Uarini in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Uarini peaks around January 23 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeJan 23UV 15Jul 13UV 10
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep11Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme

Air quality in Uarini 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 Uarini is worst in September — around 32 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (June, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateSep 1531 µg/m³Jun 911 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb16Moderate
Mar17Moderate
Apr15Moderate
May11Good
Jun11Good
Jul13Moderate
Aug25Moderate
Sep32Moderate
Oct24Moderate
Nov19Moderate
Dec15Moderate
Location & terrain

Where is Uarini?

Uarini sits at 3.0°S, 65.1°W, 56 m above sea level, in Brazil. The nearest listed city is Alvarães, 42 km away.

CoariCarauariTonantinsSanto Antônio do Içá

Topography around Uarini

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

Within 3 km, the terrain around Uarini has only modest variations in elevation — a maximum elevation change of 47 m around an average of 52 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 54 m; within 80 km, only modest variations in elevation — a maximum elevation change of 65 m.

The land around Uarini is covered by trees (84%) within 3 km, trees (83%) within 16 km, and trees (91%) within 80 km.

3 km
47 m
16 km
54 m
80 km
65 m
treesgrasslandwaterwetland
January weather nearby: Alvarães 42 km · Tefé 60 km · Fonte Boa 121 km · Maraã 137 km · Coari 250 km · Carauari 289 km · Tonantins 299 km · Santo Antônio do Içá 315 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 Uarini (-2.99°, -65.1083°, elevation 56 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).