Santo André weather in May

In May, Santo André sees average daytime highs of 23°C and overnight lows near 15°C, with 96 mm of rain across 12.1 wet days and about 10.9 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 22°C by the end. The sky is clear or mostly clear about 27% of the time in May, and the air most often feels humid.

Daylight stretches from about 11 h 06 min at the start of May to 10 h 42 min by month's end. Set against the rest of the year, May is Santo André's 4th-clearest and 6th-windiest month. For the whole year in context, see Santo André's year-round climate.

Daytime high
23°
9th warmest
Overnight low
15°
5th coldest
Rainfall
96 mm
12.1 wet days
Daylight
10 h 54 min
7:37 AM – 6:28 PM
Cloud cover
63%
4th clearest
Wind
8 km/h
6th windiest
Solar energy
3.5 kWh/m²
Travel score
6.4
out of 10
Air quality
Good
PM10 27 µg/m³ · 2016

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 22°C by the end.

A typical May day in Santo André reaches about 23°C in the afternoon and slips back to 15°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 27°C. Set against its neighbours, May runs about 3°C cooler than April and on par with June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12416
22416
32416
42416
52416
62416
72416
82316
92316
102316
112315
122315
132315
142315
152315
162315
172315
182315
192315
202315
212215
222215
232215
242215
252215
262214
272214
282214
292214
302214
312214

Santo André 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
Jan27° / 20°33726.613.33.9
Feb28° / 20°2752312.84.0
Mar27° / 19°27124.612.24.3
Apr25° / 18°11415.811.55.7
May23° / 15°9612.110.96.4
Jun22° / 14°708.410.67.0
Jul22° / 13°848.310.77.1
Aug23° / 14°688.811.27.1
Sep24° / 15°12913.911.96.2
Oct25° / 17°15717.812.65.4
Nov25° / 18°20920.713.14.9
Dec27° / 19°25123.913.44.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24555
34555
44555
54357
64357
74357
84258
94159
104159
114060
123961
133961
143961
153961
164060
173961
183961
193961
203961
214060
224060
234060
244159
254159
264060
274159
284159
294258
304357
314258

Chance of precipitation in May

Any precipitation

Santo André gets around 96 mm of rain over 12.1 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 39% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
241
341
440
540
640
740
839
939
1039
1139
1239
1340
1440
1540
1640
1739
1839
1939
2039
2139
2239
2339
2439
2539
2639
2739
2838
2938
3038
3137

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 41% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16235417
27255315
38265214
48275312
59295111
69305110
7932499
81034488
91035487
101037476
111138466
121139455
131141444
141142434
151143433
161244423
171245412
181246402
191247392
201348382
211348372
221449362
231549352
241549342
251650332
261750322
271850312
281850302
291950292
302049292
312149292

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 06 min at the start of May to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over May. Sunrise moves from 7:29 AM to 7:44 AM, and sunset from 6:37 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.17:296:37
211.17:306:37
311.17:306:36
411.17:316:35
511.17:316:35
611.07:326:34
711.07:326:33
811.07:336:33
911.07:336:32
1011.07:346:31
1110.97:346:31
1210.97:356:30
1310.97:356:30
1410.97:366:29
1510.97:366:29
1610.97:376:28
1710.87:376:28
1810.87:386:27
1910.87:386:27
2010.87:396:27
2110.87:396:26
2210.87:396:26
2310.87:406:25
2410.77:406:25
2510.77:416:25
2610.77:416:24
2710.77:426:24
2810.77:426:24
2910.77:436:24
3010.77:436:24
3110.77:446:23

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.5 kWh/m².

For context, solar energy here swings from a low near 3.21 kWh/m² to a high of 5.74 kWh/m² in December across the year — May's 3.5 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.7Moderate
93.7Moderate
103.6Moderate
113.6Moderate
123.6Moderate
133.5Moderate
143.5Moderate
153.5Moderate
163.4Moderate
173.4Moderate
183.4Moderate
193.4Moderate
203.3Moderate
213.3Moderate
223.3Moderate
233.3Moderate
243.3Moderate
253.3Moderate
263.3Moderate
273.2Moderate
283.2Moderate
293.2Moderate
303.2Moderate
313.2Moderate
Planning a trip in May

Hazard calendar for Santo André

In seasonPeak

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

Santo André's rainy season runs October–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 Santo André?

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

6.4
Sightseeing
4th-best month of the year
5.0
Beach & pool
6th-best month of the year

May is a reasonable time to visit Santo André for sightseeing.

What to pack for Santo André in May

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

In May, Santo André sees daytime highs around 23°C and nights near 15°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Santo André in May

The nearest coast averages about 24°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 48 km away) is warmest in February at about 27°C and coldest in August near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr26Warm
May24Refreshing
Jun22Refreshing
Jul21Refreshing
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec25Warm

UV index in Santo André in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santo André peaks around February 8 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 8UV 14Jul 14UV 5
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar10Extreme
Apr9Very high
May7High
Jun6High
Jul5Moderate
Aug7Very high
Sep8Very high
Oct11Extreme
Nov12Extreme
Dec14Extreme

Air quality in Santo André 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 Santo André is worst in July — around 52 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (February, 24 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateJul 1451 µg/m³Feb 1225 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb24Moderate
Mar26Moderate
Apr28Moderate
May36Poor
Jun49Poor
Jul52Poor
Aug47Poor
Sep41Poor
Oct31Moderate
Nov25Moderate
Dec26Moderate
Location & terrain

Where is Santo André?

Santo André sits at 23.7°S, 46.5°W, 801 m above sea level, in Brazil. The nearest listed city is São Bernardo do Campo, 4.0 km away.

Topography around Santo André

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

Within 3 km, the terrain around Santo André has only modest variations in elevation — a maximum elevation change of 82 m around an average of 772 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 269 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,459 m.

The land around Santo André is covered by artificial surfaces (92%) within 3 km, artificial surfaces (63%) and trees (25%) within 16 km, and trees (53%) and water (21%) within 80 km.

3 km
82 m
16 km
269 m
80 km
1,459 m
treesgrasslandcroplandartificial surfaceswatermangroves
May weather nearby: São Bernardo do Campo 4.0 km · São Caetano do Sul 5.0 km · Sacomã 7.0 km · Sao Lucas 8.0 km · Sapopemba 8.0 km · Mauá 8.0 km · Vila Prudente 9.0 km · São Mateus 9.0 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 Santo André (-23.6639°, -46.5383°, elevation 801 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).