Rorainópolis weather in January

In January, Rorainópolis sees average daytime highs of 31°C and overnight lows near 23°C, with 117 mm of rain across 15 wet days and about 12 hours of daylight. It is the 5th-warmest and 11th-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 7% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of January to 12 hours by month's end. Set against the rest of the year, January is Rorainópolis's 6th-clearest and 2nd-windiest month. For the whole year in context, see Rorainópolis's year-round climate.

Daytime high
31°
5th warmest
Overnight low
23°
10th coldest
Rainfall
117 mm
15 wet days
Daylight
12 hours
6:12 AM – 6:09 PM
Cloud cover
78%
6th clearest
Wind
7 km/h
2nd windiest
Solar energy
4.78 kWh/m²
Travel score
3.8
out of 10

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 Rorainópolis reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°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)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223124
233124
243124
253124
263124
273124
283124
293124
303124
313124

How January really feels in Rorainópolis

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.

Rorainópolis 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
Jan31° / 23°11715123.8
Feb31° / 24°10813.2123.7
Mar31° / 24°18418.1123.5
Apr30° / 23°34824.7123.1
May29° / 23°45629.4122.9
Jun29° / 23°34128.412.12.9
Jul29° / 22°24828.2123.1
Aug30° / 23°18525.1123.2
Sep32° / 23°14720.6123.1
Oct32° / 23°12918.5123.2
Nov31° / 23°16120.4123.1
Dec31° / 23°16119.911.93.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 13% of January, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12179
22179
32179
42179
52179
62179
72080
82080
92080
101981
111981
121981
131981
141882
151882
161882
171882
181882
191882
201981
211981
221981
231981
242080
252080
262080
272080
282080
292080
302179
312179

Chance of precipitation in January

Any precipitation

Rorainópolis gets around 117 mm of rain over 15 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 49% and peaks near 56% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
156
255
354
453
553
652
752
852
951
1051
1151
1251
1350
1450
1549
1649
1748
1847
1947
2046
2146
2246
2345
2445
2545
2645
2745
2845
2945
3045
3146

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 71% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10117613
20127513
30127612
40137512
50147511
60157411
70157510
80167410
9016759
10117739
11117739
12118729
13118738
14119728
15219718
16220717
17221707
18221716
19322696
20323695
21323695
22324685
23325684
24425674
25426664
26426664
27426664
28327664
29327664
30327664
31327664

Wind in January

Winds average 7 km/h in January.

Across January, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 54 min at the start of January to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 6:06 AM to 6:16 AM, and sunset from 6:03 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:066:03
211.96:076:04
311.96:076:04
411.96:086:05
511.96:086:05
611.96:096:05
711.96:096:06
811.96:096:06
911.96:106:07
1011.96:106:07
1111.96:116:08
1211.96:116:08
1311.96:116:08
1411.96:126:09
1512.06:126:09
1612.06:126:09
1712.06:136:10
1812.06:136:10
1912.06:136:11
2012.06:146:11
2112.06:146:11
2212.06:146:11
2312.06:156:12
2412.06:156:12
2512.06:156:12
2612.06:156:13
2712.06:156:13
2812.06:166:13
2912.06:166:13
3012.06:166:14
3112.06:166:14

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.78 kWh/m².

For context, solar energy here swings from a low near 3.53 kWh/m² to a high of 5.36 kWh/m² in October across the year — January's 4.78 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in January

Hazard calendar for Rorainópolis

In seasonPeak

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

Rorainópolis's rainy season runs April–July, 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 Rorainópolis?

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
5.6
Beach & pool
2nd-best month of the year

January is a weaker month for outdoor sightseeing in Rorainópolis.

What to pack for Rorainópolis in January

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

In January, Rorainópolis sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Rorainópolis 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 Rorainópolis peaks around March 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 16 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeMar 19UV 15Nov 16UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr15Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec11Extreme

Air quality in Rorainópolis 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 Rorainópolis is worst in March — around 33 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (July, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1732 µg/m³Jul 119 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb24Moderate
Mar33Moderate
Apr25Moderate
May11Good
Jun9Good
Jul9Good
Aug11Good
Sep12Good
Oct14Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Rorainópolis?

Rorainópolis sits at 0.9°N, 60.4°W, 82 m above sea level, in Brazil. The nearest listed city is Caracaraí, 125 km away.

Alto AlegreLethemPresidente FigueiredoBarcelos

Topography around Rorainópolis

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

Within 3 km, the terrain around Rorainópolis has only modest variations in elevation — a maximum elevation change of 49 m around an average of 87 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 226 m; within 80 km, large variations in elevation — a maximum elevation change of 858 m.

The land around Rorainópolis is covered by grassland (46%) and trees (45%) within 3 km, trees (66%) and grassland (34%) within 16 km, and trees (81%) within 80 km.

3 km
49 m
16 km
226 m
80 km
858 m
treesgrasslandartificial surfaceswetland
January weather nearby: Caracaraí 125 km · Mucajaí 175 km · Cantá 186 km · Boa Vista 210 km · Alto Alegre 248 km · Lethem 278 km · Presidente Figueiredo 334 km · Barcelos 351 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 Rorainópolis (0.9461°, -60.4181°, 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).