Piracaia weather in May

In May, Piracaia sees average daytime highs of 22°C and overnight lows near 13°C, with 67 mm of rain across 8.1 wet days and about 10.9 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 21°C by the end. The sky is clear or mostly clear about 37% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 11 h 12 min at the start of May to 10 h 42 min by month's end. Set against the rest of the year, May is Piracaia's 4th-clearest and 7th-windiest month. For the whole year in context, see Piracaia's year-round climate.

Daytime high
22°
10th warmest
Overnight low
13°
4th coldest
Rainfall
67 mm
8.1 wet days
Daylight
10 h 54 min
7:35 AM – 6:29 PM
Cloud cover
54%
4th clearest
Wind
8 km/h
7th windiest
Solar energy
3.76 kWh/m²
Travel score
7.1
out of 10

Piracaia 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

Highs ease over the month, from about 23°C in the first days to 21°C by the end.

A typical May day in Piracaia reaches about 22°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°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)
12414
22314
32314
42314
52314
62314
72313
82313
92313
102313
112213
122213
132213
142213
152213
162213
172213
182213
192213
202213
212212
222212
232212
242212
252212
262112
272112
282112
292112
302112
312112

Piracaia weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°31724.813.34.3
Feb27° / 18°25520.712.84.5
Mar26° / 17°21120.812.25.0
Apr25° / 16°8311.511.56.7
May22° / 13°678.110.97.1
Jun22° / 12°455.310.67.5
Jul22° / 11°494.710.77.7
Aug23° / 12°405.311.27.9
Sep24° / 14°9810.311.97.0
Oct25° / 16°15415.912.55.8
Nov25° / 16°19918.313.15.3
Dec26° / 18°26222.913.44.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26139
36040
46040
55941
65743
75743
85644
95545
105347
115347
125248
135149
145149
155149
165149
175050
185050
195149
205149
215149
225248
235248
245347
255446
265446
275446
285446
295644
305644
315644

Chance of precipitation in May

Any precipitation

Piracaia gets around 67 mm of rain over 8.1 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 26% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
225
325
424
524
624
724
824
924
1024
1124
1224
1325
1425
1526
1626
1727
1827
1928
2028
2128
2228
2329
2429
2529
2628
2728
2828
2928
3027
3126

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the comfortable band about 47% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12550232
22750221
32950201
43050191
53250171
63351160
73451150
83551140
93650140
103750130
113751120
123851110
133950110
144050100
154149100
16424990
17424990
18434880
19444880
20454780
21464680
22474680
23484570
24494470
25504470
26504370
27524260
28524260
29534160
30534160
31534160

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 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
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
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 12 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 30 minutes over May. Sunrise moves from 7:28 AM to 7:42 AM, and sunset from 6:37 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:286:37
211.17:286:37
311.17:296:36
411.17:296:35
511.17:306:35
611.17:306:34
711.07:316:33
811.07:316:33
911.07:326:32
1011.07:326:32
1111.07:326:31
1211.07:336:30
1310.97:336:30
1410.97:346:29
1510.97:346:29
1610.97:356:29
1710.97:356:28
1810.97:366:28
1910.87:366:27
2010.87:376:27
2110.87:376:26
2210.87:386:26
2310.87:386:26
2410.87:396:25
2510.87:396:25
2610.87:406:25
2710.77:406:25
2810.77:406:24
2910.77:416:24
3010.77:416:24
3110.77:426:24

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.76 kWh/m².

For context, solar energy here swings from a low near 3.56 kWh/m² to a high of 5.54 kWh/m² in November across the year — May's 3.76 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.1Bright
54.1Bright
64.1Bright
74.0Bright
84.0Moderate
94.0Moderate
103.9Moderate
113.9Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.7Moderate
163.7Moderate
173.7Moderate
183.6Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.5Moderate
Planning a trip in May

Hazard calendar for Piracaia

In seasonPeak

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

Piracaia'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 Piracaia?

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

7.1
Sightseeing
4th-best month of the year
5.0
Beach & pool
6th-best month of the year

May is one of the better times to visit Piracaia for general sightseeing.

What to pack for Piracaia in May

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

In May, Piracaia sees daytime highs around 22°C and nights near 13°C. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

UV index in Piracaia 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 Piracaia peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 20UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Piracaia 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 Piracaia is worst in June — around 71 µg/m³ PM2.5 (unhealthy), about 2.3× the cleanest month (December, 31 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJun 2370 µg/m³Dec 2031 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb34Moderate
Mar41Poor
Apr48Poor
May62Unhealthy
Jun71Unhealthy
Jul70Unhealthy
Aug60Unhealthy
Sep53Poor
Oct39Poor
Nov32Moderate
Dec31Moderate
Location & terrain

Where is Piracaia?

Piracaia sits at 23.1°S, 46.4°W, 822 m above sea level, in Brazil. The nearest listed city is Bom Jesus dos Perdões, 14 km away.

Topography around Piracaia

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

Within 3 km, the terrain around Piracaia has significant variations in elevation — a maximum elevation change of 309 m around an average of 859 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 889 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,859 m.

The land around Piracaia is covered by grassland (59%) and trees (28%) within 3 km, trees (51%) and grassland (37%) within 16 km, and trees (48%) and grassland (35%) within 80 km.

3 km
309 m
16 km
889 m
80 km
1,859 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Bom Jesus dos Perdões 14 km · Nazaré Paulista 15 km · Atibaia 21 km · Bragança Paulista 22 km · Extrema 23 km · Santa Isabel 32 km · Bairro da Penha 35 km · Mairiporã 38 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 Piracaia (-23.0539°, -46.3581°, elevation 822 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).