Rio Maria weather in January

In January, Rio Maria sees average daytime highs of 30°C and overnight lows near 22°C, with 292 mm of rain across 28.5 wet days and about 12.4 hours of daylight. It is the 11th-warmest and 1st-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 2% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of January to 12 h 18 min by month's end. Set against the rest of the year, January is Rio Maria's 11th-clearest and 9th-windiest month. For the whole year in context, see Rio Maria's year-round climate.

Daytime high
30°
11th warmest
Overnight low
22°
6th coldest
Rainfall
292 mm
28.5 wet days
Daylight
12 h 24 min
6:18 AM – 6:41 PM
Cloud cover
86%
11th clearest
Wind
5 km/h
9th windiest
Solar energy
4.65 kWh/m²
Travel score
2.9
out of 10

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 Rio Maria reaches about 30°C in the afternoon and slips back to 22°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°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)
13022
23022
33022
43022
53022
63022
73022
83022
93022
103022
113022
123022
133022
143022
153022
163022
173022
183022
193022
203022
213022
223022
233022
243022
253022
263022
273022
283022
293022
303022
313022

How January really feels in Rio Maria

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.

Rio Maria weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°29228.512.42.9
Feb30° / 22°2632612.22.8
Mar30° / 22°26228.5122.8
Apr30° / 22°19723.611.83.2
May31° / 22°10214.611.74.1
Jun32° / 22°112.311.65.1
Jul33° / 21°30.511.64.7
Aug34° / 22°50.911.84.1
Sep33° / 23°305123.9
Oct32° / 23°9814.612.23.6
Nov31° / 23°18021.712.33.3
Dec30° / 22°21425.212.43.1

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 6% of January, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11288
21288
31288
41288
51189
61090
71090
81090
9991
10991
11991
12892
13892
14892
15892
16991
17892
18892
19892
20892
21892
22892
23892
24892
25892
26793
27793
28793
29793
30793
31793

Chance of precipitation in January

Any precipitation

Rio Maria gets around 292 mm of rain over 28.5 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 92% and peaks near 94% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
188
289
389
489
590
690
790
891
991
1091
1191
1291
1391
1492
1592
1692
1792
1892
1992
2092
2192
2292
2393
2493
2593
2694
2794
2894
2994
3094
3194

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 99% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11000
21000
31000
41000
51000
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
161000
171000
181000
191000
201000
211000
221000
231000
24991
25991
26991
27991
28991
29991
30991
31982

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 24 min at the start of January to 12 h 18 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 6:11 AM to 6:24 AM, and sunset from 6:36 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:116:36
212.46:116:36
312.46:126:37
412.46:126:37
512.46:136:37
612.46:136:38
712.46:146:38
812.46:146:39
912.46:156:39
1012.46:156:39
1112.46:166:40
1212.46:166:40
1312.46:176:40
1412.46:176:40
1512.46:186:41
1612.46:186:41
1712.46:186:41
1812.46:196:41
1912.46:196:42
2012.46:206:42
2112.46:206:42
2212.46:216:42
2312.46:216:42
2412.46:216:43
2512.36:226:43
2612.36:226:43
2712.36:236:43
2812.36:236:43
2912.36:236:43
3012.36:246:43
3112.36:246:43

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.65 kWh/m².

For context, solar energy here swings from a low near 4.59 kWh/m² to a high of 6.08 kWh/m² in September across the year — January's 4.65 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in January

Hazard calendar for Rio Maria

In seasonPeak

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

Rio Maria's monsoon runs November–April, 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 Rio Maria?

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

2.9
Sightseeing
10th-best month of the year
3.9
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Rio Maria.

What to pack for Rio Maria in January

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

In January, Rio Maria sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

UV index in Rio Maria in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rio Maria peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 13UV 15Jun 23UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov12Extreme
Dec11Extreme

Air quality in Rio Maria 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 Rio Maria is worst in September — around 59 µg/m³ PM2.5 (unhealthy), about 11.7× the cleanest month (July, 5 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateSep 1754 µg/m³Jul 105 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb11Good
Mar11Good
Apr11Good
May8Good
Jun6Good
Jul5Good
Aug20Moderate
Sep59Unhealthy
Oct30Moderate
Nov20Moderate
Dec16Moderate
Location & terrain

Where is Rio Maria?

Rio Maria sits at 7.3°S, 50.0°W, 197 m above sea level, in Brazil. The nearest listed city is Xinguara, 26 km away.

Topography around Rio Maria

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

Within 3 km, the terrain around Rio Maria has only modest variations in elevation — a maximum elevation change of 53 m around an average of 200 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 453 m; within 80 km, large variations in elevation — a maximum elevation change of 678 m.

The land around Rio Maria is covered by grassland (69%) and trees (20%) within 3 km, grassland (72%) and trees (27%) within 16 km, and grassland (70%) and trees (29%) within 80 km.

3 km
53 m
16 km
453 m
80 km
678 m
treesgrasslandartificial surfaces
January weather nearby: Xinguara 26 km · Floresta do Araguaia 46 km · Água Azul do Norte 74 km · Redenção 80 km · Canaã dos Carajás 90 km · Ourilândia do Norte 130 km · Conceição do Araguaia 136 km · Tucumã 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 Rio Maria (-7.3106°, -50.0483°, elevation 197 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).