Riachão das Neves weather in May

In May, Riachão das Neves sees average daytime highs of 31°C and overnight lows near 20°C, with 18 mm of rain across 2.9 wet days and about 11.5 hours of daylight. It is the 5th-warmest and 8th-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 41% of the time in May, and the air most often feels humid.

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 Riachão das Neves's 5th-clearest and 6th-windiest month. For the whole year in context, see Riachão das Neves's year-round climate.

Daytime high
31°
5th warmest
Overnight low
20°
4th coldest
Rainfall
18 mm
2.9 wet days
Daylight
11 h 30 min
6:12 AM – 5:40 PM
Cloud cover
50%
5th clearest
Wind
7 km/h
6th windiest
Solar energy
5.03 kWh/m²
Travel score
5.6
out of 10

Riachão das Neves is human 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 31°C through the month.

A typical May day in Riachão das Neves reaches about 31°C in the afternoon and slips back to 20°C overnight — a 10°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, May runs on par with April and on par with June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13121
23121
33121
43121
53121
63121
73121
83121
93121
103121
113121
123121
133121
143121
153121
163121
173120
183120
193120
203120
213120
223120
233120
243120
253120
263120
273120
283120
293120
303120
313120

How May really feels in Riachão das Neves

Once humidity and wind are folded in, May averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Riachão das Neves weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°16316.412.64.2
Feb30° / 21°12215.112.44.2
Mar30° / 21°15316.412.14.2
Apr30° / 21°659.411.74.9
May31° / 20°182.911.55.6
Jun30° / 19°10.111.36.3
Jul30° / 18°0011.46.4
Aug32° / 19°10.111.65.5
Sep34° / 21°71.111.94.2
Oct34° / 23°536.112.33.5
Nov31° / 22°15613.512.53.8
Dec30° / 21°15714.512.74.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% 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 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25941
35842
45842
55842
65842
75743
85644
95743
105644
115644
125644
135644
145743
155743
165743
175941
186040
196139
206238
216337
226436
236535
246634
256832
266832
276931
287129
297129
307228
317228

Chance of precipitation in May

Any precipitation

Riachão das Neves gets around 18 mm of rain over 2.9 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 9% and peaks near 17% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
117
216
315
415
514
613
712
812
912
1011
1111
1211
1310
1410
1510
169
179
189
199
208
218
228
237
247
256
265
275
284
294
303
313

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the humid band about 51% of days. Sticky, muggy-or-worse air turns up on roughly 32% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11541494
21642484
31643474
41744463
51745443
60846432
70847422
80948402
901049392
1001150372
1101151362
1201251352
1301353331
1401453321
1501454311
1601554301
1701654291
1801754281
1911754271
2011854261
2111954251
2212054241
2312156220
2412256210
2522355200
2622455190
2722556170
2822656160
2932854150
3032955130
3133154120

Wind in May

Winds average 7 km/h in May.

Across May, 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
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
308calm
318calm

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 6:09 AM to 6:16 AM, and sunset from 5:45 PM to 5:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:095:45
211.66:095:44
311.66:095:44
411.66:105:43
511.66:105:43
611.56:105:43
711.56:105:42
811.56:105:42
911.56:115:42
1011.56:115:41
1111.56:115:41
1211.56:115:41
1311.56:115:40
1411.56:125:40
1511.56:125:40
1611.56:125:40
1711.56:125:40
1811.46:135:39
1911.46:135:39
2011.46:135:39
2111.46:135:39
2211.46:145:39
2311.46:145:39
2411.46:145:38
2511.46:145:38
2611.46:155:38
2711.46:155:38
2811.46:155:38
2911.46:155:38
3011.46:165:38
3111.46:165:38

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.03 kWh/m².

For context, solar energy here swings from a low near 5.02 kWh/m² to a high of 6.6 kWh/m² in September across the year — May's 5.03 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in May

Hazard calendar for Riachão das Neves

In seasonPeak

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

Riachão das Neves's rainy season runs November–March, 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 Riachão das Neves?

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

5.6
Sightseeing
3rd-best month of the year
7.9
Beach & pool
4th-best month of the year

May is a reasonable time to visit Riachão das Neves for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Riachão das Neves in May

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

In May, Riachão das Neves sees daytime highs around 31°C and nights near 20°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Riachão das Neves 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 Riachão das Neves peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 18UV 15Jun 23UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr12Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov13Extreme
Dec13Extreme

Air quality in Riachão das Neves 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 Riachão das Neves is worst in September — around 25 µg/m³ PM2.5 (moderate), about 5.7× the cleanest month (July, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 2324 µg/m³Jul 154 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar7Good
Apr6Good
May5Good
Jun5Good
Jul4Good
Aug6Good
Sep25Moderate
Oct24Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Riachão das Neves?

Riachão das Neves sits at 11.7°S, 44.9°W, 503 m above sea level, in Brazil. The nearest listed city is Barreiras, 46 km away.

Topography around Riachão das Neves

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

Within 3 km, the terrain around Riachão das Neves has only modest variations in elevation — a maximum elevation change of 192 m around an average of 533 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 357 m; within 80 km, significant variations in elevation — a maximum elevation change of 401 m.

The land around Riachão das Neves is covered by trees (35%), grassland (29%) and shrubs (24%) within 3 km, trees (49%) and shrubs (31%) within 16 km, and shrubs (41%) and trees (35%) within 80 km.

3 km
192 m
16 km
357 m
80 km
401 m
treesshrubsgrasslandcroplandartificial surfaces
May weather nearby: Barreiras 46 km · São Desidério 69 km · Formosa do Rio Preto 84 km · Santa Rita de Cássia 92 km · Luis Eduardo Magalhães 103 km · Corrente 147 km · Serra Dourada 154 km · Santana 166 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 Riachão das Neves (-11.7461°, -44.91°, elevation 503 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).