São José do Vale do Rio Preto weather in May

In May, São José do Vale do Rio Preto sees average daytime highs of 23°C and overnight lows near 15°C, with 66 mm of rain across 11.4 wet days and about 11 hours of daylight. It is the 9th-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 26% 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 São José do Vale do Rio Preto's 4th-clearest and 10th-windiest month. For the whole year in context, see São José do Vale do Rio Preto's year-round climate.

Daytime high
23°
9th warmest
Overnight low
15°
4th coldest
Rainfall
66 mm
11.4 wet days
Daylight
10 h 54 min
7:20 AM – 6:16 PM
Cloud cover
60%
4th clearest
Wind
5 km/h
10th windiest
Solar energy
3.59 kWh/m²
Travel score
6.6
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 São José do Vale do Rio Preto reaches about 23°C in the afternoon and slips back to 15°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 26°C. Set against its neighbours, May runs about 2°C cooler than April and on par with June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12416
22416
32415
42415
52415
62415
72415
82315
92315
102315
112315
122315
132315
142315
152315
162315
172314
182314
192314
202314
212314
222314
232214
242214
252214
262214
272214
282214
292214
302214
312214

São José do Vale do Rio Preto weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 19°30321.913.24.5
Feb28° / 19°2041712.85.0
Mar27° / 19°2162112.24.8
Apr25° / 17°10114.411.56.0
May23° / 15°6611.4116.6
Jun22° / 13°366.510.77.3
Jul22° / 13°366.710.87.4
Aug23° / 13°407.211.27.4
Sep24° / 15°9311.711.96.7
Oct25° / 17°14516.312.55.7
Nov25° / 18°25121.313.14.7
Dec26° / 19°31623.713.34.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% 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 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24654
34654
44654
54555
64555
74456
84357
94258
104159
114060
124060
133961
143961
153961
163961
173961
183961
194060
204258
214258
224357
234456
244555
254753
264753
274852
284951
295050
305050
315149

Chance of precipitation in May

Any precipitation

São José do Vale do Rio Preto gets around 66 mm of rain over 11.4 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 37% and peaks near 42% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
241
341
441
541
641
740
840
940
1040
1139
1239
1339
1438
1538
1637
1736
1836
1936
2035
2135
2235
2334
2434
2534
2633
2733
2833
2932
3032
3131

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 44% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15344912
26364811
36374710
4738479
5839468
6840457
7940456
8941446
91042445
101042435
111142434
121143434
131243423
141244423
151244412
161345412
171345402
181346402
191446391
201447381
211447371
221548361
231548351
241649351
251749341
261749331
271849321
281949311
291949301
302049301
312149291

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 7:13 AM to 7:26 AM, and sunset from 6:25 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:136:25
211.27:136:24
311.27:146:23
411.17:146:23
511.17:156:22
611.17:156:21
711.17:166:21
811.17:166:20
911.17:176:20
1011.07:176:19
1111.07:176:19
1211.07:186:18
1311.07:186:18
1411.07:196:17
1511.07:196:17
1610.97:206:16
1710.97:206:16
1810.97:216:15
1910.97:216:15
2010.97:216:15
2110.97:226:14
2210.97:226:14
2310.87:236:14
2410.87:236:13
2510.87:246:13
2610.87:246:13
2710.87:256:13
2810.87:256:12
2910.87:266:12
3010.87:266:12
3110.87:266:12

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.59 kWh/m².

For context, solar energy here swings from a low near 3.42 kWh/m² to a high of 5.91 kWh/m² in February across the year — May's 3.59 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
33.9Moderate
43.9Moderate
53.9Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.7Moderate
103.7Moderate
113.7Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.5Moderate
163.5Moderate
173.5Moderate
183.5Moderate
193.5Moderate
203.4Moderate
213.4Moderate
223.4Moderate
233.4Moderate
243.4Moderate
253.4Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.4Moderate
303.4Moderate
313.4Moderate
Planning a trip in May

Hazard calendar for São José do Vale do Rio Preto

In seasonPeak

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

São José do Vale do Rio Preto'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 São José do Vale do Rio Preto?

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

6.6
Sightseeing
5th-best month of the year
5.1
Beach & pool
7th-best month of the year

May is a reasonable time to visit São José do Vale do Rio Preto for sightseeing.

What to pack for São José do Vale do Rio Preto in May

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

In May, São José do Vale do Rio Preto sees daytime highs around 23°C and nights near 15°C. Worth packing: light clothes and rain gear. About 11 days see rain.

light clothesrain gear

UV index in São José do Vale do Rio Preto 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 São José do Vale do Rio Preto peaks around January 24 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 24UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in São José do Vale do Rio Preto 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 São José do Vale do Rio Preto is worst in September — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (March, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1518 µg/m³Mar 1110 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr12Good
May15Moderate
Jun16Moderate
Jul15Moderate
Aug15Moderate
Sep19Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is São José do Vale do Rio Preto?

São José do Vale do Rio Preto sits at 22.2°S, 42.9°W, 582 m above sea level, in Brazil. The nearest listed city is Sapucaia, 17 km away.

Topography around São José do Vale do Rio Preto

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São José do Vale do Rio Preto.

Within 3 km, the terrain around São José do Vale do Rio Preto has significant variations in elevation — a maximum elevation change of 514 m around an average of 705 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,467 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,224 m.

The land around São José do Vale do Rio Preto is covered by trees (68%) and grassland (28%) within 3 km, trees (62%) and grassland (36%) within 16 km, and trees (51%) and grassland (44%) within 80 km.

3 km
514 m
16 km
1,467 m
80 km
2,224 m
treesgrasslandartificial surfaceswater
May weather nearby: Sapucaia 17 km · Sumidouro 28 km · Três Rios 30 km · Teresópolis 30 km · São Pedro 30 km · Além Paraíba 37 km · Paraíba do Sul 38 km · Carmo 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 São José do Vale do Rio Preto (-22.1521°, -42.9233°, elevation 582 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).