Rolim de Moura weather in May

In May, Rolim de Moura sees average daytime highs of 30°C and overnight lows near 21°C, with 49 mm of rain across 10 wet days and about 11.5 hours of daylight. It is the 8th-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 28% 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 Rolim de Moura's 5th-clearest and 5th-windiest month. For the whole year in context, see Rolim de Moura's year-round climate.

Daytime high
30°
8th warmest
Overnight low
21°
4th coldest
Rainfall
49 mm
10 wet days
Daylight
11 h 30 min
6:20 AM – 5:47 PM
Cloud cover
61%
5th clearest
Wind
6 km/h
5th windiest
Solar energy
4.57 kWh/m²
Travel score
5.1
out of 10

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 Rolim de Moura reaches about 30°C in the afternoon and slips back to 21°C overnight — a 9°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
73021
83021
93021
103021
113021
123021
133021
143021
153021
163021
173021
183021
193021
203021
213021
223021
233021
243021
253021
263021
273021
283021
293021
303021
313021

How May really feels in Rolim de Moura

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.

Rolim de Moura weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°25227.612.63.0
Feb29° / 22°25025.512.43.0
Mar30° / 22°21326.512.13.1
Apr30° / 22°11519.411.73.8
May30° / 21°491011.55.1
Jun31° / 20°92.311.35.6
Jul32° / 20°61.611.45.3
Aug33° / 21°163.111.64.2
Sep33° / 22°5410.111.93.3
Oct33° / 23°10317.112.33.0
Nov31° / 23°17021.712.53.1
Dec30° / 22°22325.112.73.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% 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 53%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23664
33763
43763
53862
63862
73862
83961
94060
104159
114159
124258
134357
144456
154456
164555
174654
184852
194852
204951
215149
225248
235446
245644
255743
265842
275941
286238
296337
306436
316634

Chance of precipitation in May

Any precipitation

Rolim de Moura gets around 49 mm of rain over 10 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 32% and peaks near 44% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
144
243
342
441
540
640
739
838
938
1037
1136
1235
1334
1433
1533
1632
1731
1831
1930
2029
2128
2227
2327
2426
2525
2624
2723
2822
2921
3020
3119

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 70% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
102411794
202511793
302512783
412513763
512513772
612514762
712514762
812514762
912515761
1013515751
1113516741
1213516741
1313517731
1413517731
1512518731
1612518731
1712519730
1812520720
1912621700
2012622690
2112623680
2202724670
2302724670
2402725660
2502826640
2602827630
2702928610
2802929600
29021031570
30021032560
31021133540

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 6 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
16calm
26calm
36calm
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 5:52 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:175:52
211.66:175:52
311.66:175:51
411.66:175:51
511.56:175:50
611.56:185:50
711.56:185:50
811.56:185:49
911.56:185:49
1011.56:185:49
1111.56:195:48
1211.56:195:48
1311.56:195:48
1411.56:195:48
1511.56:195:47
1611.56:205:47
1711.56:205:47
1811.46:205:47
1911.46:205:47
2011.46:215:46
2111.46:215:46
2211.46:215:46
2311.46:215:46
2411.46:225:46
2511.46:225:46
2611.46:225:46
2711.46:235:46
2811.46:235:46
2911.46:235:46
3011.46:235:46
3111.46:245:46

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.57 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.57 kWh/m² to a high of 5.88 kWh/m² in October across the year — May's 4.57 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
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
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 Rolim de Moura

In seasonPeak

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

Rolim de Moura'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 Rolim de Moura?

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

5.1
Sightseeing
3rd-best month of the year
6.9
Beach & pool
4th-best month of the year

May is a reasonable time to visit Rolim de Moura for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Rolim de Moura in May

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

In May, Rolim de Moura sees daytime highs around 30°C and nights near 21°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Rolim de Moura 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 Rolim de Moura peaks around January 23 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 23UV 16Sep 15UV 4
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul8Very high
Aug9Very high
Sep3Moderate
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Rolim de Moura 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 Rolim de Moura is worst in September — around 54 µg/m³ PM2.5 (poor), about 6.7× the cleanest month (June, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateSep 1550 µg/m³Jun 238 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar12Good
Apr9Good
May8Good
Jun8Good
Jul8Good
Aug29Moderate
Sep54Poor
Oct22Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Rolim de Moura?

Rolim de Moura sits at 11.8°S, 61.8°W, 254 m above sea level, in Brazil. The nearest listed city is Alta Floresta d'Oeste, 25 km away.

Topography around Rolim de Moura

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

Within 3 km, the terrain around Rolim de Moura has only modest variations in elevation — a maximum elevation change of 84 m around an average of 263 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 254 m; within 80 km, significant variations in elevation — a maximum elevation change of 422 m.

The land around Rolim de Moura is covered by grassland (79%) and trees (21%) within 3 km, grassland (74%) and trees (22%) within 16 km, and grassland (65%) and trees (34%) within 80 km.

3 km
84 m
16 km
254 m
80 km
422 m
treesgrasslandcroplandartificial surfaces
May weather nearby: Alta Floresta d'Oeste 25 km · Cacoal 56 km · Pimenta Bueno 68 km · Presidente Médici 71 km · Espigão dOeste 92 km · São Miguel do Guaporé 100 km · Ji Paraná 103 km · Ouro Preto do Oeste 126 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 Rolim de Moura (-11.8036°, -61.8033°, elevation 254 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).