Atibaia weather in May

In May, Atibaia sees average daytime highs of 23°C and overnight lows near 14°C, with 61 mm of rain across 7 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 24°C in the first days to 22°C by the end. The sky is clear or mostly clear about 39% 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 Atibaia's 5th-clearest and 7th-windiest month. For the whole year in context, see Atibaia's year-round climate.

Daytime high
23°
10th warmest
Overnight low
14°
4th coldest
Rainfall
61 mm
7 wet days
Daylight
10 h 54 min
7:36 AM – 6:29 PM
Cloud cover
53%
5th clearest
Wind
9 km/h
7th windiest
Solar energy
3.8 kWh/m²
Travel score
7.4
out of 10

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 Atibaia reaches about 23°C in the afternoon and slips back to 14°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 19°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)
12415
22415
32414
42414
52414
62414
72414
82314
92314
102314
112314
122314
132314
142314
152314
162313
172313
182313
192313
202213
212213
222213
232213
242213
252213
262213
272213
282213
292213
302213
312213

Atibaia 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
Jan27° / 19°24422.713.34.5
Feb27° / 19°18419.412.84.7
Mar27° / 18°15018.312.25.3
Apr25° / 16°649.411.56.9
May23° / 14°61710.97.4
Jun22° / 12°424.710.67.8
Jul22° / 12°434.210.77.9
Aug24° / 12°334.211.28.2
Sep25° / 15°828.911.97.1
Oct26° / 16°12214.112.56.0
Nov26° / 17°15616.313.15.5
Dec27° / 18°19220.613.44.8

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 17% of May, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26337
36238
46139
56040
65941
75941
85743
95644
105644
115446
125347
135347
145248
155248
165248
175248
185347
195347
205347
215446
225347
235446
245446
255545
265545
275545
285644
295644
305644
315644

Chance of precipitation in May

Any precipitation

Atibaia gets around 61 mm of rain over 7 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 23% and peaks near 25% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
122
222
321
421
521
621
721
821
921
1021
1121
1221
1322
1422
1522
1623
1723
1823
1924
2024
2124
2225
2325
2425
2525
2625
2725
2825
2925
3024
3124

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 46% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11747333
21848322
32048302
42248291
52348281
62448271
72648261
82748251
92848241
102948231
113048221
123148211
133148201
143247191
153347191
163447181
173547171
183647161
193647160
203747150
213847150
223946140
234046140
244145130
254245130
264344120
274444120
284544120
294543120
304643110
314742110

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 7:29 AM to 7:43 AM, and sunset from 6:38 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:296:38
211.17:296:37
311.17:306:37
411.17:306:36
511.17:316:35
611.17:316:35
711.07:316:34
811.07:326:33
911.07:326:33
1011.07:336:32
1111.07:336:32
1211.07:346:31
1310.97:346:31
1410.97:356:30
1510.97:356:30
1610.97:366:29
1710.97:366:29
1810.97:376:28
1910.87:376:28
2010.87:386:27
2110.87:386:27
2210.87:396:27
2310.87:396:26
2410.87:406:26
2510.87:406:26
2610.87:406:26
2710.77:416:25
2810.77:416:25
2910.77:426:25
3010.77:426:25
3110.77:436:24

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.8 kWh/m².

For context, solar energy here swings from a low near 3.58 kWh/m² to a high of 5.67 kWh/m² in November across the year — May's 3.8 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.2Bright
34.2Bright
44.2Bright
54.1Bright
64.1Bright
74.1Bright
84.0Bright
94.0Moderate
104.0Moderate
113.9Moderate
123.9Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.7Moderate
173.7Moderate
183.7Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.5Moderate
Planning a trip in May

Hazard calendar for Atibaia

In seasonPeak

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

Atibaia'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 Atibaia?

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

7.4
Sightseeing
4th-best month of the year
5.7
Beach & pool
6th-best month of the year

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

What to pack for Atibaia in May

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

In May, Atibaia sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes. About 7 days see rain.

light clothes

UV index in Atibaia 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 Atibaia 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 Atibaia 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 Atibaia 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 Atibaia?

Atibaia sits at 23.1°S, 46.6°W, 817 m above sea level, in Brazil. The nearest listed city is Bom Jesus dos Perdões, 9.0 km away.

Topography around Atibaia

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

Within 3 km, the terrain around Atibaia has only modest variations in elevation — a maximum elevation change of 147 m around an average of 780 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 679 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,000 m.

The land around Atibaia is covered by artificial surfaces (44%), trees (32%) and grassland (21%) within 3 km, trees (52%) and grassland (34%) within 16 km, and trees (48%) and grassland (30%) within 80 km.

3 km
147 m
16 km
679 m
80 km
2,000 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Bom Jesus dos Perdões 9.0 km · Nazaré Paulista 17 km · Bragança Paulista 18 km · Jarinu 18 km · Piracaia 21 km · Mairiporã 23 km · Campo Limpo Paulista 26 km · Francisco Morato 27 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 Atibaia (-23.1169°, -46.5503°, elevation 817 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).