Rio Maria weather in May

In May, Rio Maria sees average daytime highs of 31°C and overnight lows near 22°C, with 102 mm of rain across 14.6 wet days and about 11.7 hours of daylight. It is the 6th-warmest and 7th-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 22% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 42 min at the start of May to 11 h 36 min by month's end. Set against the rest of the year, May is Rio Maria's 6th-clearest and 6th-windiest month. For the whole year in context, see Rio Maria's year-round climate.

Daytime high
31°
6th warmest
Overnight low
22°
6th coldest
Rainfall
102 mm
14.6 wet days
Daylight
11 h 42 min
6:26 AM – 6:06 PM
Cloud cover
65%
6th clearest
Wind
5 km/h
6th windiest
Solar energy
4.72 kWh/m²
Travel score
4.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical May day in Rio Maria reaches about 31°C in the afternoon and slips back to 22°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, May runs on par with April and about 1°C cooler than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13022
23022
33022
43022
53122
63122
73122
83122
93122
103122
113122
123122
133122
143122
153122
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122
313122

How May really feels in Rio Maria

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

Rio Maria weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 7th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22773
32773
42971
52971
63268
73268
83466
93565
103763
113862
124060
134060
144258
154258
164456
174555
184555
194753
204753
214852
224951
234951
245050
255149
265248
275347
285446
295545
305644
315941

Chance of precipitation in May

Any precipitation

Rio Maria gets around 102 mm of rain over 14.6 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 46% and peaks near 65% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
165
264
363
462
560
659
757
856
954
1053
1152
1250
1349
1449
1548
1647
1746
1845
1944
2043
2142
2241
2339
2438
2536
2634
2733
2831
2929
3027
3125

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
101945
201945
301945
401945
501945
602935
702935
802935
902935
1003925
1103925
1204915
1304924
1404924
1505914
1605914
1706904
1806904
1907894
2008893
2109883
22010873
23011863
24012862
25014842
26015832
27017821
28019801
29121771
30123751
31126721

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 5 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
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 42 min at the start of May to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over May. Sunrise moves from 6:25 AM to 6:29 AM, and sunset from 6:10 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:256:10
211.76:256:09
311.76:256:09
411.76:256:09
511.76:256:09
611.76:256:08
711.76:256:08
811.76:256:08
911.76:266:08
1011.76:266:07
1111.76:266:07
1211.76:266:07
1311.76:266:07
1411.76:266:07
1511.76:266:07
1611.76:266:06
1711.76:276:06
1811.76:276:06
1911.76:276:06
2011.66:276:06
2111.66:276:06
2211.66:276:06
2311.66:286:06
2411.66:286:06
2511.66:286:06
2611.66:286:06
2711.66:286:06
2811.66:296:06
2911.66:296:06
3011.66:296:06
3111.66:296:06

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.72 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 — May's 4.72 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in May

Hazard calendar for Rio Maria

In seasonPeak

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

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 May a good time to visit Rio Maria?

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

4.1
Sightseeing
3rd-best month of the year
6.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Rio Maria for sightseeing.

What to pack for Rio Maria in May

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

In May, Rio Maria sees daytime highs around 31°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Rio Maria in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).