São João del Rei weather in May

In May, São João del Rei sees average daytime highs of 23°C and overnight lows near 14°C, with 31 mm of rain across 5.3 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 24°C in the first days to 23°C by the end. The sky is clear or mostly clear about 32% 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 João del Rei's 5th-clearest and 7th-windiest month. For the whole year in context, see São João del Rei's year-round climate.

Daytime high
23°
10th warmest
Overnight low
14°
4th coldest
Rainfall
31 mm
5.3 wet days
Daylight
11 hours
7:23 AM – 6:23 PM
Cloud cover
56%
5th clearest
Wind
9 km/h
7th windiest
Solar energy
3.87 kWh/m²
Travel score
7.6
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 23°C by the end.

A typical May day in São João del Rei reaches about 23°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 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)
12515
22415
32415
42415
52414
62414
72414
82414
92414
102414
112414
122414
132314
142314
152314
162314
172314
182314
192314
202314
212313
222313
232313
242313
252313
262313
272313
282313
292313
302313
312313

São João del Rei 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° / 18°22820.613.14.8
Feb27° / 18°13515.812.75.2
Mar27° / 18°14717.512.15.3
Apr26° / 16°498.711.56.9
May23° / 14°315.3117.6
Jun23° / 12°152.510.78.1
Jul23° / 12°10210.88.4
Aug24° / 13°172.811.38.5
Sep26° / 15°607.411.97.2
Oct26° / 16°10012.612.56.1
Nov26° / 17°18618.9135.1
Dec26° / 18°23822.313.34.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35644
45743
55644
65545
75347
85248
95149
105050
114852
124852
134654
144654
154555
164555
174555
184654
194654
204753
214753
224852
235050
245149
255248
265248
275446
285446
295644
305644
315842

Chance of precipitation in May

Any precipitation

São João del Rei gets around 31 mm of rain over 5.3 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 18% and peaks near 21% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
116
216
316
415
515
615
715
816
916
1016
1117
1217
1318
1418
1519
1619
1720
1820
1920
2021
2121
2220
2320
2420
2519
2619
2718
2817
2917
3016
3115

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 48% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11846351
22047331
32147311
42347291
52448271
62648261
72748251
82848240
92948230
103048220
113048220
123148210
133148210
143247200
153247200
163347190
173348190
183448180
193448180
203548170
213548170
223648160
233648160
243748150
253848140
263948130
274048130
284147120
294147110
304247110
314347100

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 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 7:17 AM to 7:30 AM, and sunset from 6:31 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:176:31
211.27:186:31
311.27:186:30
411.27:186:29
511.27:196:29
611.17:196:28
711.17:206:28
811.17:206:27
911.17:206:26
1011.17:216:26
1111.17:216:25
1211.17:226:25
1311.07:226:24
1411.07:236:24
1511.07:236:24
1611.07:236:23
1711.07:246:23
1811.07:246:22
1911.07:256:22
2010.97:256:22
2110.97:266:21
2210.97:266:21
2310.97:266:21
2410.97:276:20
2510.97:276:20
2610.97:286:20
2710.97:286:20
2810.87:296:20
2910.87:296:19
3010.87:296:19
3110.87:306:19

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.87 kWh/m².

For context, solar energy here swings from a low near 3.69 kWh/m² to a high of 5.74 kWh/m² in February across the year — May's 3.87 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.2Bright
44.2Bright
54.2Bright
64.1Bright
74.1Bright
84.1Bright
94.0Bright
104.0Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.8Moderate
153.8Moderate
163.8Moderate
173.7Moderate
183.7Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.7Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.7Moderate
303.7Moderate
313.7Moderate
Planning a trip in May

Hazard calendar for São João del Rei

In seasonPeak

None of São João del Rei'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 João del Rei'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 São João del Rei?

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
6.1
Beach & pool
6th-best month of the year

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

What to pack for São João del Rei in May

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

In May, São João del Rei sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes. About 5 days see rain.

light clothes

UV index in São João del Rei 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 São João del Rei peaks around February 9 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 highExtremeFeb 9UV 15Jun 22UV 7
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep9Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in São João del Rei 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 João del Rei is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (January, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1616 µg/m³Jan 118 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar9Good
Apr9Good
May10Good
Jun10Good
Jul9Good
Aug11Good
Sep17Moderate
Oct11Good
Nov9Good
Dec8Good
Location & terrain

Where is São João del Rei?

São João del Rei sits at 21.1°S, 44.3°W, 911 m above sea level, in Brazil. The nearest listed city is Barroso, 30 km away.

Topography around São João del Rei

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São João del Rei.

Within 3 km, the terrain around São João del Rei has significant variations in elevation — a maximum elevation change of 301 m around an average of 956 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 531 m; within 80 km, large variations in elevation — a maximum elevation change of 1,184 m.

The land around São João del Rei is covered by grassland (42%), trees (28%) and artificial surfaces (28%) within 3 km, grassland (53%) and trees (38%) within 16 km, and grassland (56%) and trees (34%) within 80 km.

3 km
301 m
16 km
531 m
80 km
1,184 m
treesgrasslandcroplandartificial surfaces
May weather nearby: Barroso 30 km · Carandaí 51 km · Barbacena 52 km · Bom Sucesso 53 km · Santo Antônio do Amparo 71 km · Conselheiro Lafaiete 72 km · Oliveira 76 km · Carmópolis de Minas 77 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 João del Rei (-21.1356°, -44.2617°, elevation 911 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).