Guareí weather in May

In May, Guareí sees average daytime highs of 24°C and overnight lows near 14°C, with 64 mm of rain across 6.6 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 25°C in the first days to 23°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 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 Guareí's 6th-clearest and 8th-windiest month. For the whole year in context, see Guareí's year-round climate.

Daytime high
24°
10th warmest
Overnight low
14°
4th coldest
Rainfall
64 mm
6.6 wet days
Daylight
10 h 54 min
7:43 AM – 6:35 PM
Cloud cover
55%
6th clearest
Wind
9 km/h
8th windiest
Solar energy
3.69 kWh/m²
Travel score
7.5
out of 10

Guareí 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 25°C in the first days to 23°C by the end.

A typical May day in Guareí reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 28°C. Set against its neighbours, May runs about 3°C cooler than April and about 1°C warmer than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12615
22615
32515
42515
52515
62515
72515
82515
92515
102515
112415
122415
132414
142414
152414
162414
172414
182414
192414
202314
212314
222314
232314
242314
252314
262314
272313
282313
292313
302313
312313

Guareí 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°28322.613.34.0
Feb29° / 20°20819.212.84.1
Mar28° / 19°15317.712.25.0
Apr27° / 17°658.311.56.8
May24° / 14°646.610.97.5
Jun23° / 13°515.410.67.8
Jul23° / 12°464.610.78.0
Aug25° / 13°424.711.28.0
Sep26° / 15°838.711.96.9
Oct27° / 17°12412.412.56.0
Nov28° / 18°15414.913.15.5
Dec28° / 19°19919.813.44.4

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 17% of May, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36040
46040
55941
65842
75743
85644
95545
105446
115347
125248
135149
145149
155050
165050
175050
184951
195050
205050
215050
225050
235149
245149
255149
265248
275248
285248
295446
305446
315446

Chance of precipitation in May

Any precipitation

Guareí gets around 64 mm of rain over 6.6 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 22% and peaks near 25% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
119
219
319
418
518
618
718
818
919
1019
1119
1220
1320
1421
1521
1622
1722
1823
1923
2023
2124
2224
2324
2425
2525
2625
2725
2825
2925
3025
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 41% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
114354210
21535428
31636417
41736406
51837396
61938395
71938385
82039374
92140364
102140354
112141343
122242333
132243333
142244323
152244312
162245302
172346302
182346292
192446282
202446272
212546272
222645262
232745262
242844252
252943252
263042252
273141252
283240252
293340252
303439252
313538252

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 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 7:36 AM to 7:50 AM, and sunset from 6:44 PM to 6:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.17:366:44
211.17:366:44
311.17:376:43
411.17:376:42
511.17:376:41
611.07:386:41
711.07:386:40
811.07:396:40
911.07:396:39
1011.07:406:38
1111.07:406:38
1210.97:416:37
1310.97:416:37
1410.97:426:36
1510.97:426:36
1610.97:436:35
1710.97:436:35
1810.87:446:34
1910.87:446:34
2010.87:456:34
2110.87:456:33
2210.87:466:33
2310.87:466:33
2410.87:476:32
2510.77:476:32
2610.77:476:32
2710.77:486:31
2810.77:486:31
2910.77:496:31
3010.77:496:31
3110.77:506:31

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.69 kWh/m².

For context, solar energy here swings from a low near 3.39 kWh/m² to a high of 5.89 kWh/m² in December across the year — May's 3.69 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.1Bright
44.1Bright
54.1Bright
64.0Bright
74.0Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.8Moderate
123.8Moderate
133.7Moderate
143.7Moderate
153.7Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.4Moderate
253.4Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.4Moderate
303.4Moderate
313.4Moderate
Planning a trip in May

Hazard calendar for Guareí

In seasonPeak

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

Guareí'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 Guareí?

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

7.5
Sightseeing
4th-best month of the year
6.3
Beach & pool
5th-best month of the year

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

What to pack for Guareí in May

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

In May, Guareí sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes. About 7 days see rain.

light clothes

UV index in Guareí 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 Guareí peaks around January 21 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 21UV 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 Guareí 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 Guareí is worst in September — around 22 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodSep 922 µg/m³Nov 2312 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb13Moderate
Mar13Moderate
Apr14Moderate
May17Moderate
Jun20Moderate
Jul21Moderate
Aug22Moderate
Sep22Moderate
Oct17Moderate
Nov12Good
Dec12Good
Location & terrain

Where is Guareí?

Guareí sits at 23.4°S, 48.2°W, 644 m above sea level, in Brazil. The nearest listed city is Angatuba, 27 km away.

Topography around Guareí

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

Within 3 km, the terrain around Guareí has only modest variations in elevation — a maximum elevation change of 88 m around an average of 648 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 356 m; within 80 km, significant variations in elevation — a maximum elevation change of 556 m.

The land around Guareí is covered by grassland (47%), cropland (26%) and trees (21%) within 3 km, trees (38%), grassland (36%) and cropland (25%) within 16 km, and trees (42%), cropland (30%) and grassland (24%) within 80 km.

3 km
88 m
16 km
356 m
80 km
556 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Angatuba 27 km · Itapetininga 28 km · Cesário Lange 29 km · Tatuí 33 km · Conchas 44 km · Capela do Alto 47 km · Laranjal Paulista 51 km · Cerquilho 51 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 Guareí (-23.3728°, -48.1842°, elevation 644 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).