Casa Branca weather in May

In May, Casa Branca sees average daytime highs of 25°C and overnight lows near 15°C, with 46 mm of rain across 6 wet days and about 11 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 25°C by the end. The sky is clear or mostly clear about 48% 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 48 min by month's end. Set against the rest of the year, May is Casa Branca's 5th-clearest and 8th-windiest month. For the whole year in context, see Casa Branca's year-round climate.

Daytime high
25°
10th warmest
Overnight low
15°
4th coldest
Rainfall
46 mm
6 wet days
Daylight
11 hours
7:36 AM – 6:33 PM
Cloud cover
46%
5th clearest
Wind
7 km/h
8th windiest
Solar energy
4.15 kWh/m²
Travel score
7.6
out of 10

Casa Branca 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 27°C in the first days to 25°C by the end.

A typical May day in Casa Branca reaches about 25°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 28°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)
12716
22716
32716
42716
52616
62616
72615
82615
92615
102615
112615
122615
132615
142515
152515
162515
172515
182515
192515
202515
212515
222514
232514
242514
252514
262514
272514
282514
292514
302514
312514

Casa Branca 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
Jan29° / 20°23522.313.23.9
Feb29° / 20°16418.612.74.1
Mar29° / 19°14117.712.24.7
Apr28° / 18°588.511.56.5
May25° / 15°466117.6
Jun25° / 14°263.410.78.3
Jul25° / 13°222.610.88.4
Aug27° / 15°193.211.37.9
Sep29° / 17°647.411.96.1
Oct29° / 19°9813.312.54.9
Nov29° / 19°15417.1134.6
Dec29° / 20°19921.713.34.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 36%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27228
37030
47030
56931
66733
76733
86535
96436
106337
116238
126238
136139
146139
156040
166040
176040
186040
196040
206139
216238
226238
236337
246337
256436
266535
276535
286634
296634
306634
316733

Chance of precipitation in May

Any precipitation

Casa Branca gets around 46 mm of rain over 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 19% and peaks near 23% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
118
217
317
416
516
616
716
816
916
1017
1117
1218
1318
1419
1520
1620
1721
1822
1922
2023
2123
2223
2323
2423
2522
2622
2722
2821
2920
3020
3119

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 43% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11844308
22044307
32145296
42245285
52345284
62445284
72545273
82644273
92644273
102744272
112844262
122844262
132943262
143043252
153142252
163142252
173242251
183341251
193341241
203441241
213541241
223541231
233641221
243741221
253741211
263841201
273842201
283842191
293842191
303943181
313943171

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 7 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
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 12 min at the start of May to 10 h 48 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 7:42 AM, and sunset from 6:42 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:296:42
211.27:306:41
311.27:306:40
411.27:316:40
511.17:316:39
611.17:316:39
711.17:326:38
811.17:326:37
911.17:336:37
1011.17:336:36
1111.07:346:36
1211.07:346:35
1311.07:346:35
1411.07:356:34
1511.07:356:34
1611.07:366:33
1710.97:366:33
1810.97:376:33
1910.97:376:32
2010.97:386:32
2110.97:386:32
2210.97:386:31
2310.97:396:31
2410.97:396:31
2510.87:406:30
2610.87:406:30
2710.87:416:30
2810.87:416:30
2910.87:416:29
3010.87:426:29
3110.87:426:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.15 kWh/m².

For context, solar energy here swings from a low near 3.88 kWh/m² to a high of 5.96 kWh/m² in October across the year — May's 4.15 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.5Bright
74.4Bright
84.4Bright
94.3Bright
104.3Bright
114.3Bright
124.2Bright
134.2Bright
144.2Bright
154.1Bright
164.1Bright
174.0Bright
184.0Bright
194.0Bright
204.0Moderate
214.0Moderate
224.0Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
313.9Moderate
Planning a trip in May

Hazard calendar for Casa Branca

In seasonPeak

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

Casa Branca's monsoon runs November–March, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Casa Branca?

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

7.6
Sightseeing
4th-best month of the year
7.1
Beach & pool
6th-best month of the year

May is one of the better times to visit Casa Branca for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Casa Branca in May

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

In May, Casa Branca sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes. About 6 days see rain.

light clothes

UV index in Casa Branca 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 Casa Branca peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 21UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Casa Branca 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 Casa Branca is worst in September — around 32 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (November, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1430 µg/m³Nov 2310 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Good
Mar12Good
Apr13Moderate
May15Moderate
Jun15Moderate
Jul16Moderate
Aug23Moderate
Sep32Moderate
Oct16Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Casa Branca?

Casa Branca sits at 21.8°S, 47.1°W, 692 m above sea level, in Brazil. The nearest listed city is Santa Cruz das Palmeiras, 18 km away.

Topography around Casa Branca

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

Within 3 km, the terrain around Casa Branca has only modest variations in elevation — a maximum elevation change of 117 m around an average of 701 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 419 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,281 m.

The land around Casa Branca is covered by cropland (34%), trees (31%) and artificial surfaces (20%) within 3 km, cropland (53%) and trees (34%) within 16 km, and trees (39%), cropland (35%) and grassland (23%) within 80 km.

3 km
117 m
16 km
419 m
80 km
1,281 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Santa Cruz das Palmeiras 18 km · Tambaú 21 km · Vargem Grande do Sul 21 km · São José do Rio Pardo 28 km · Aguaí 34 km · Mococa 35 km · São João da Boa Vista 37 km · Santa Rita do Passa Quatro 41 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 Casa Branca (-21.7739°, -47.0864°, elevation 692 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).