Ouro Preto do Oeste weather in May

In May, Ouro Preto do Oeste sees average daytime highs of 30°C and overnight lows near 22°C, with 79 mm of rain across 14.8 wet days and about 11.5 hours of daylight. It is the 9th-warmest and 9th-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 21% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 36 min at the start of May to 11 h 24 min by month's end. Set against the rest of the year, May is Ouro Preto do Oeste's 5th-clearest and 7th-windiest month. For the whole year in context, see Ouro Preto do Oeste's year-round climate.

Daytime high
30°
9th warmest
Overnight low
22°
4th coldest
Rainfall
79 mm
14.8 wet days
Daylight
11 h 30 min
6:20 AM – 5:50 PM
Cloud cover
65%
5th clearest
Wind
6 km/h
7th windiest
Solar energy
4.5 kWh/m²
Travel score
4.5
out of 10

Ouro Preto do Oeste is settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical May day in Ouro Preto do Oeste 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, May runs on par with April and about 1°C cooler than June.

15°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
223021
233021
243021
253021
263021
273021
283021
293021
303021
313021

How May really feels in Ouro Preto do Oeste

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.

Ouro Preto do Oeste weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°27228.512.62.9
Feb29° / 23°26226.112.42.9
Mar30° / 23°2352812.12.9
Apr30° / 22°14822.911.83.4
May30° / 22°7914.811.54.5
Jun31° / 21°203.911.45.4
Jul32° / 20°122.111.44.9
Aug34° / 21°244.511.63.8
Sep33° / 23°8513.411.93.1
Oct32° / 23°14821.212.22.8
Nov31° / 23°22124.512.52.9
Dec30° / 23°25426.912.63.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% 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 59%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22872
32872
42971
53070
63070
73169
83268
93367
103367
113565
123565
133763
143763
153763
163961
174060
184060
194258
204456
214456
224555
234654
244951
255050
265149
275446
285644
295743
305941
316139

Chance of precipitation in May

Any precipitation

Ouro Preto do Oeste gets around 79 mm of rain over 14.8 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 48% and peaks near 58% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
158
257
356
455
554
653
753
852
951
1051
1150
1250
1350
1449
1549
1649
1749
1848
1948
2047
2146
2245
2344
2444
2543
2641
2740
2839
2937
3036
3134

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 78% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10137827
20238816
30238816
40238825
50239815
60239824
71239814
81239814
912310813
1012310813
1112310813
1212311803
1312311803
1412312793
1512312793
1612313792
1712313792
1802314792
1902315782
2002315782
2101316782
2201317772
2301317772
2401418752
2501418752
2601519732
2701520731
2801621711
2901622701
3001623691
3101724671

Wind in May

Winds average 6 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
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 36 min at the start of May to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over May. Sunrise moves from 6:17 AM to 6:24 AM, and sunset from 5:55 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:175:55
211.66:175:54
311.66:185:54
411.66:185:54
511.66:185:53
611.66:185:53
711.66:185:53
811.66:185:52
911.66:185:52
1011.66:195:52
1111.56:195:52
1211.56:195:51
1311.56:195:51
1411.56:195:51
1511.56:205:51
1611.56:205:50
1711.56:205:50
1811.56:205:50
1911.56:215:50
2011.56:215:50
2111.56:215:50
2211.56:215:49
2311.56:215:49
2411.56:225:49
2511.56:225:49
2611.46:225:49
2711.46:235:49
2811.46:235:49
2911.46:235:49
3011.46:235:49
3111.46:245:49

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.5 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.5 kWh/m² to a high of 5.77 kWh/m² in October across the year — May's 4.5 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in May

Hazard calendar for Ouro Preto do Oeste

In seasonPeak

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

Ouro Preto do Oeste's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Ouro Preto do Oeste?

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

4.5
Sightseeing
3rd-best month of the year
6.1
Beach & pool
4th-best month of the year

May is a reasonable time to visit Ouro Preto do Oeste for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Ouro Preto do Oeste in May

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

In May, Ouro Preto do Oeste sees daytime highs around 30°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 Ouro Preto do Oeste in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ouro Preto do Oeste peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 13 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 24UV 15Sep 13UV 3
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug6High
Sep3Moderate
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Ouro Preto do Oeste 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 Ouro Preto do Oeste is worst in September — around 57 µg/m³ PM2.5 (unhealthy), about 7.3× the cleanest month (June, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodPoorModerateSep 1454 µg/m³Jun 198 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb12Good
Mar13Moderate
Apr10Good
May9Good
Jun8Good
Jul8Good
Aug39Poor
Sep57Unhealthy
Oct24Moderate
Nov17Moderate
Dec14Moderate
Location & terrain

Where is Ouro Preto do Oeste?

Ouro Preto do Oeste sits at 10.7°S, 62.2°W, 214 m above sea level, in Brazil. The nearest listed city is Ji Paraná, 33 km away.

Topography around Ouro Preto do Oeste

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ouro Preto do Oeste.

Within 3 km, the terrain around Ouro Preto do Oeste has significant variations in elevation — a maximum elevation change of 275 m around an average of 229 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 303 m; within 80 km, significant variations in elevation — a maximum elevation change of 462 m.

The land around Ouro Preto do Oeste is covered by grassland (59%) and trees (40%) within 3 km, grassland (73%) and trees (25%) within 16 km, and grassland (67%) and trees (32%) within 80 km.

3 km
275 m
16 km
303 m
80 km
462 m
treesgrasslandartificial surfaces
May weather nearby: Ji Paraná 33 km · Jaru 44 km · Presidente Médici 59 km · Cacoal 114 km · São Miguel do Guaporé 118 km · Rolim de Moura 126 km · Ariquemes 129 km · Alta Floresta d'Oeste 139 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 Ouro Preto do Oeste (-10.7481°, -62.2158°, elevation 214 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).