Riacho de Santana weather in May

In May, Riacho de Santana sees average daytime highs of 31°C and overnight lows near 20°C, with 8 mm of rain across 1.6 wet days and about 11.4 hours of daylight. It is the 10th-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 42% of the time in May, and the air most often feels humid.

Daylight stretches from about 11 h 30 min at the start of May to 11 h 18 min by month's end. Set against the rest of the year, May is Riacho de Santana's 5th-clearest and 6th-windiest month. For the whole year in context, see Riacho de Santana's year-round climate.

Daytime high
31°
10th warmest
Overnight low
20°
5th coldest
Rainfall
8 mm
1.6 wet days
Daylight
11 h 24 min
6:07 AM – 5:29 PM
Cloud cover
47%
5th clearest
Wind
10 km/h
6th windiest
Solar energy
5 kWh/m²
Travel score
5.5
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 Riacho de Santana reaches about 31°C in the afternoon and slips back to 20°C overnight — a 11°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 about 1°C warmer than June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13121
23121
33121
43121
53121
63121
73120
83120
93120
103120
113120
123120
133120
143120
153120
163120
173120
183120
193120
203120
213120
223120
233120
243120
253120
263120
273120
283120
293120
303120
313120

How May really feels in Riacho de Santana

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.

Riacho de Santana weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°10611.612.74.1
Feb32° / 22°7710.812.54.0
Mar31° / 22°9611.712.14.1
Apr31° / 21°435.911.74.8
May31° / 20°81.611.45.5
Jun30° / 19°10.411.26.3
Jul30° / 18°00.111.36.5
Aug31° / 18°10.111.55.7
Sep33° / 20°61.311.94.2
Oct34° / 22°365.312.33.4
Nov32° / 22°12912.912.63.7
Dec31° / 22°10712.912.84.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 25% of May, with mostly cloudy or overcast conditions the remaining 33%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16733
26733
36733
46733
56733
66634
76634
86634
96535
106535
116436
126436
136337
146337
156238
166337
176337
186337
196436
206436
216535
226535
236733
246733
256931
267129
277228
287228
297426
307525
317525

Chance of precipitation in May

Any precipitation

Riacho de Santana gets around 8 mm of rain over 1.6 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 6% and peaks near 11% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
111
210
310
49
58
68
77
87
96
106
116
125
135
145
155
165
175
185
195
205
215
225
234
244
254
264
273
283
293
303
312

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
121558241
221658231
321758221
421859210
521959200
622059190
732158180
832257180
932357170
1032457160
1132656150
1232756140
1342854140
1442954130
1543054120
1643153120
1743253110
1853351110
1953451100
2053451100
215355190
226364980
236384980
246394870
256404770
267414660
277424560
287434460
297444350
308454250
318474140

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 30 min at the start of May to 11 h 18 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 6:03 AM to 6:11 AM, and sunset from 5:35 PM to 5:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:035:35
211.56:045:34
311.56:045:34
411.56:045:33
511.56:045:33
611.56:045:32
711.56:055:32
811.46:055:32
911.46:055:31
1011.46:055:31
1111.46:065:31
1211.46:065:30
1311.46:065:30
1411.46:065:30
1511.46:075:29
1611.46:075:29
1711.46:075:29
1811.46:075:29
1911.36:085:28
2011.36:085:28
2111.36:085:28
2211.36:095:28
2311.36:095:28
2411.36:095:28
2511.36:095:27
2611.36:105:27
2711.36:105:27
2811.36:105:27
2911.36:115:27
3011.36:115:27
3111.36:115:27

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5 kWh/m².

For context, solar energy here swings from a low near 4.78 kWh/m² to a high of 6.61 kWh/m² in October across the year — May's 5 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.8Bright
Planning a trip in May

Hazard calendar for Riacho de Santana

In seasonPeak

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

Riacho de Santana'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 Riacho de Santana?

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

5.5
Sightseeing
4th-best month of the year
8.0
Beach & pool
4th-best month of the year

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

What to pack for Riacho de Santana in May

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

In May, Riacho de Santana sees daytime highs around 31°C and nights near 20°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Riacho de Santana 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 Riacho de Santana peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 15Jul 10UV 9
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar15Extreme
Apr12Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Riacho de Santana?

Riacho de Santana sits at 13.6°S, 42.9°W, 626 m above sea level, in Brazil. The nearest listed city is Igaporã, 30 km away.

Topography around Riacho de Santana

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

Within 3 km, the terrain around Riacho de Santana has only modest variations in elevation — a maximum elevation change of 247 m around an average of 637 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 710 m; within 80 km, large variations in elevation — a maximum elevation change of 813 m.

The land around Riacho de Santana is covered by shrubs (31%), trees (29%) and grassland (26%) within 3 km, shrubs (40%), trees (32%) and grassland (20%) within 16 km, and shrubs (47%) and trees (21%) within 80 km.

3 km
247 m
16 km
710 m
80 km
813 m
treesshrubsgrasslandcroplandartificial surfaces
May weather nearby: Igaporã 30 km · Tanque Novo 49 km · Bom Jesus da Lapa 65 km · Serra do Ramalho 70 km · Guanambi 70 km · Macaúbas 71 km · Caetité 72 km · Palmas de Monte Alto 77 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 Riacho de Santana (-13.6092°, -42.9389°, elevation 626 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).