Guapiaçu weather in May

In May, Guapiaçu sees average daytime highs of 27°C and overnight lows near 17°C, with 44 mm of rain across 5.1 wet days and about 11 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 27°C by the end. The sky is clear or mostly clear about 51% of the time in May, and the air most often feels humid.

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 Guapiaçu's 5th-clearest and 7th-windiest month. For the whole year in context, see Guapiaçu's year-round climate.

Daytime high
27°
11th warmest
Overnight low
17°
3rd coldest
Rainfall
44 mm
5.1 wet days
Daylight
11 hours
7:43 AM – 6:44 PM
Cloud cover
43%
5th clearest
Wind
9 km/h
7th windiest
Solar energy
4.31 kWh/m²
Travel score
7.4
out of 10

Guapiaçu 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 28°C in the first days to 27°C by the end.

A typical May day in Guapiaçu reaches about 27°C in the afternoon and slips back to 17°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°C. Set against its neighbours, May runs about 2°C cooler than April and on par with June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12918
22818
32818
42818
52818
62818
72818
82817
92817
102817
112717
122717
132717
142717
152717
162717
172717
182717
192717
202717
212717
222716
232716
242716
252716
262716
272716
282716
292716
302716
312716

How May really feels in Guapiaçu

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Guapiaçu weather by month

How May compares with the rest of the year at a glance. May is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°26423.213.13.4
Feb30° / 22°18919.812.73.6
Mar30° / 21°17219.112.14.0
Apr29° / 20°629.111.55.6
May27° / 17°445.1117.4
Jun27° / 16°243.110.87.9
Jul28° / 16°152.110.98.0
Aug30° / 17°182.511.36.5
Sep31° / 19°586.511.95.0
Oct31° / 21°11112.112.54.1
Nov31° / 21°16617133.9
Dec30° / 22°22422.313.23.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% 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 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27327
37129
47129
57030
66931
76733
86634
96535
106337
116238
126139
136139
146139
156040
166040
176040
186139
196139
206238
216436
226436
236535
246634
256634
266634
276832
286832
296832
306931
316931

Chance of precipitation in May

Any precipitation

Guapiaçu gets around 44 mm of rain over 5.1 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 17% and peaks near 20% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
116
215
315
414
514
614
714
814
914
1014
1115
1215
1315
1416
1516
1617
1717
1818
1918
2019
2119
2219
2319
2420
2520
2620
2720
2819
2919
3019
3118

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 38% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
192838231
2102938221
3113038201
4123138190
5123238170
6133238160
7143238160
8143338150
9153238140
10153238140
11163238130
12163238130
13173238120
14173238120
15183138120
16193138120
17193138120
18203038120
19203038120
20213037120
21213037120
22223037120
23223037110
24223037110
25233037110
26233037100
27223037100
2822313890
2922313890
3022323880
3122323880

Wind in May

Winds average 9 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
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 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 7:37 AM to 7:49 AM, and sunset from 6:52 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:376:52
211.27:376:51
311.27:376:50
411.27:386:50
511.27:386:49
611.27:396:48
711.17:396:48
811.17:396:47
911.17:406:47
1011.17:406:46
1111.17:416:46
1211.17:416:45
1311.17:416:45
1411.07:426:44
1511.07:426:44
1611.07:436:44
1711.07:436:43
1811.07:446:43
1911.07:446:42
2011.07:446:42
2110.97:456:42
2210.97:456:41
2310.97:466:41
2410.97:466:41
2510.97:476:41
2610.97:476:40
2710.97:476:40
2810.97:486:40
2910.97:486:40
3010.97:496:40
3110.87:496:39

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.31 kWh/m².

For context, solar energy here swings from a low near 3.94 kWh/m² to a high of 6.11 kWh/m² in October across the year — May's 4.31 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.5Bright
114.4Bright
124.4Bright
134.3Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.0Bright
274.0Bright
284.0Bright
294.0Bright
304.0Bright
314.0Moderate
Planning a trip in May

Hazard calendar for Guapiaçu

In seasonPeak

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

Guapiaçu'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 Guapiaçu?

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

7.4
Sightseeing
3rd-best month of the year
7.6
Beach & pool
4th-best month of the year

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

What to pack for Guapiaçu in May

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

In May, Guapiaçu sees daytime highs around 27°C and nights near 17°C. Pack light clothes. About 5 days see rain.

light clothes

UV index in Guapiaçu in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Guapiaçu peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 22UV 15Jun 20UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug8Very high
Sep10Very high
Oct10Extreme
Nov13Extreme
Dec14Extreme

Air quality in Guapiaçu 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 Guapiaçu is worst in September — around 24 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (November, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1423 µg/m³Nov 228 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar10Good
Apr10Good
May11Good
Jun10Good
Jul10Good
Aug19Moderate
Sep24Moderate
Oct16Moderate
Nov8Good
Dec8Good
Location & terrain

Where is Guapiaçu?

Guapiaçu sits at 20.8°S, 49.2°W, 508 m above sea level, in Brazil. The nearest listed city is São José do Rio Preto, 17 km away.

Topography around Guapiaçu

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

Within 3 km, the terrain around Guapiaçu has only modest variations in elevation — a maximum elevation change of 100 m around an average of 522 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 157 m; within 80 km, significant variations in elevation — a maximum elevation change of 288 m.

The land around Guapiaçu is covered by cropland (49%) and trees (21%) within 3 km, cropland (56%) and trees (22%) within 16 km, and cropland (63%) and trees (20%) within 80 km.

3 km
100 m
16 km
157 m
80 km
288 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: São José do Rio Preto 17 km · Bady Bassitt 27 km · Nova Granada 31 km · Mirassol 31 km · Potirendaba 32 km · Olímpia 32 km · Catanduva 46 km · Tanabi 48 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 Guapiaçu (-20.795°, -49.2203°, elevation 508 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).