São Desidério weather in May

In May, São Desidério sees average daytime highs of 30°C and overnight lows near 20°C, with 18 mm of rain across 3.2 wet days and about 11.4 hours of daylight. It is the 5th-warmest and 8th-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 39% 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 18 min by month's end. Set against the rest of the year, May is São Desidério's 5th-clearest and 6th-windiest month. For the whole year in context, see São Desidério's year-round climate.

Daytime high
30°
5th warmest
Overnight low
20°
4th coldest
Rainfall
18 mm
3.2 wet days
Daylight
11 h 24 min
6:13 AM – 5:39 PM
Cloud cover
52%
5th clearest
Wind
7 km/h
6th windiest
Solar energy
4.93 kWh/m²
Travel score
5.7
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 São Desidério reaches about 30°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 32°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)
13020
23020
33020
43020
53020
63020
73020
83020
93020
103020
113020
123020
133020
143020
153020
163020
173020
183020
193020
203019
213019
223019
233019
243019
253019
263019
273019
283019
293019
303019
313019

How May really feels in São Desidério

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.

São Desidério 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°13916.512.64.2
Feb30° / 21°12015.712.44.2
Mar30° / 21°14216.512.14.2
Apr30° / 20°6810.211.74.8
May30° / 20°183.211.45.7
Jun30° / 18°20.311.36.4
Jul30° / 17°0011.36.5
Aug31° / 18°10.111.65.6
Sep33° / 20°81.111.94.2
Oct33° / 22°516.512.33.6
Nov31° / 21°15414.212.63.9
Dec30° / 21°14314.712.74.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% 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
25842
35743
45743
55743
65644
75743
85644
95545
105644
115545
125545
135545
145545
155644
165743
175743
185842
195941
206139
216139
226337
236436
246634
256634
266832
276931
287030
297129
307228
317327

Chance of precipitation in May

Any precipitation

São Desidério gets around 18 mm of rain over 3.2 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 10% and peaks near 18% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
118
217
317
416
515
615
714
814
913
1013
1113
1212
1312
1411
1511
1610
1710
1810
199
209
218
228
237
247
256
266
275
285
294
304
314

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 29% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11744463
21845442
31846432
41946422
511047412
611148392
701249382
801250371
901351351
1001451341
1101551331
1201652311
1311751301
1411752291
1511852281
1611952271
1712051271
1812052261
1912153250
2012253240
2122351240
2222451230
2322551220
2422651210
2522751200
2632850190
2732951170
2843050160
2943249150
3043349140
3153548120

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
307calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 36 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 18 minutes over May. Sunrise moves from 6:10 AM to 6:17 AM, and sunset from 5:44 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:105:44
211.66:105:44
311.56:105:43
411.56:115:43
511.56:115:42
611.56:115:42
711.56:115:42
811.56:115:41
911.56:125:41
1011.56:125:41
1111.56:125:40
1211.56:125:40
1311.56:125:40
1411.46:135:40
1511.46:135:39
1611.46:135:39
1711.46:135:39
1811.46:145:39
1911.46:145:38
2011.46:145:38
2111.46:145:38
2211.46:155:38
2311.46:155:38
2411.46:155:38
2511.46:165:38
2611.46:165:38
2711.46:165:37
2811.36:165:37
2911.36:175:37
3011.36:175:37
3111.36:175:37

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.93 kWh/m².

For context, solar energy here swings from a low near 4.87 kWh/m² to a high of 6.5 kWh/m² in September across the year — May's 4.93 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in May

Hazard calendar for São Desidério

In seasonPeak

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

São Desidério'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 São Desidério?

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

5.7
Sightseeing
3rd-best month of the year
7.9
Beach & pool
4th-best month of the year

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

What to pack for São Desidério in May

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

In May, São Desidério sees daytime highs around 30°C and nights near 20°C. Pack light clothes. Worth having: sun protection. About 3 days see rain.

light clothessun protection

UV index in São Desidério 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 São Desidério peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 22UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug10Extreme
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec13Extreme

Air quality in São Desidério 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 São Desidério 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 São Desidério?

São Desidério sits at 12.4°S, 45.0°W, 503 m above sea level, in Brazil. The nearest listed city is Barreiras, 23 km away.

Topography around São Desidério

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Desidério.

Within 3 km, the terrain around São Desidério has only modest variations in elevation — a maximum elevation change of 203 m around an average of 558 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 284 m; within 80 km, significant variations in elevation — a maximum elevation change of 411 m.

The land around São Desidério is covered by trees (61%) within 3 km, trees (45%) and shrubs (39%) within 16 km, and shrubs (52%) and trees (21%) within 80 km.

3 km
203 m
16 km
284 m
80 km
411 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Barreiras 23 km · Riachão das Neves 69 km · Luis Eduardo Magalhães 93 km · Correntina 115 km · Serra Dourada 120 km · Santana 121 km · Santa Maria da Vitória 142 km · São Félix do Coribe 143 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 São Desidério (-12.3633°, -44.9733°, 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).