Arcos weather in May

In May, Arcos sees average daytime highs of 25°C and overnight lows near 15°C, with 34 mm of rain across 5.1 wet days and about 11.1 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 25°C by the end. The sky is clear or mostly clear about 42% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 11 h 18 min at the start of May to 10 h 54 min by month's end. Set against the rest of the year, May is Arcos's 5th-clearest and 9th-windiest month. For the whole year in context, see Arcos's year-round climate.

Daytime high
25°
10th warmest
Overnight low
15°
4th coldest
Rainfall
34 mm
5.1 wet days
Daylight
11 hours
7:27 AM – 6:30 PM
Cloud cover
48%
5th clearest
Wind
7 km/h
9th windiest
Solar energy
4.22 kWh/m²
Travel score
7.7
out of 10

Arcos 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 26°C in the first days to 25°C by the end.

A typical May day in Arcos reaches about 25°C in the afternoon and slips back to 15°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 28°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)
12616
22616
32616
42616
52616
62616
72616
82616
92616
102616
112616
122615
132515
142515
152515
162515
172515
182515
192515
202515
212515
222515
232515
242515
252515
262515
272515
282514
292514
302514
312514

Arcos 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
Jan28° / 20°24121.313.14.2
Feb29° / 20°14016.312.74.5
Mar28° / 19°15918.812.14.8
Apr27° / 18°579.311.56.6
May25° / 15°345.111.17.7
Jun25° / 14°122.110.88.5
Jul25° / 13°71.310.98.7
Aug27° / 14°11211.38.2
Sep29° / 17°466.711.96.4
Oct29° / 19°8411.612.55.2
Nov28° / 19°18419.2134.7
Dec28° / 20°24723.913.24.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 38%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
27030
36931
46832
56733
66634
76436
86337
96139
105941
115842
125743
135545
145545
155545
165545
175545
185545
195644
205644
215842
225941
236139
246238
256337
266436
276535
286634
296733
306733
316832

Chance of precipitation in May

Any precipitation

Arcos gets around 34 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 (%)
118
217
316
416
515
615
715
815
915
1015
1116
1216
1317
1417
1518
1618
1719
1819
1919
2020
2120
2220
2319
2419
2518
2618
2717
2816
2916
3015
3114

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 (%)
110364211
211384110
31239408
41340398
51441387
61542386
71543375
81543365
91644364
101644364
111644364
121744353
131744353
141844353
151844353
161944352
171944352
181943352
192043352
202043342
212143342
222144332
232244332
242244322
252345312
262345302
272446291
282447281
292547271
302548261
312649241

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 18 min at the start of May to 10 h 54 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 7:21 AM to 7:33 AM, and sunset from 6:37 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.37:216:37
211.37:226:37
311.27:226:36
411.27:226:36
511.27:236:35
611.27:236:34
711.27:246:34
811.27:246:33
911.17:246:33
1011.17:256:32
1111.17:256:32
1211.17:266:31
1311.17:266:31
1411.17:266:30
1511.17:276:30
1611.07:276:30
1711.07:286:29
1811.07:286:29
1911.07:286:29
2011.07:296:28
2111.07:296:28
2211.07:306:28
2311.07:306:27
2410.97:316:27
2510.97:316:27
2610.97:316:27
2710.97:326:26
2810.97:326:26
2910.97:336:26
3010.97:336:26
3110.97:336:26

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.22 kWh/m².

For context, solar energy here swings from a low near 3.99 kWh/m² to a high of 5.92 kWh/m² in October across the year — May's 4.22 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.3Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.2Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.0Bright
214.0Bright
224.0Bright
234.0Bright
244.0Bright
254.0Bright
264.0Bright
274.0Bright
284.0Bright
294.0Bright
304.0Bright
314.0Bright
Planning a trip in May

Hazard calendar for Arcos

In seasonPeak

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

Arcos'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 Arcos?

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

7.7
Sightseeing
4th-best month of the year
7.1
Beach & pool
5th-best month of the year

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

What to pack for Arcos in May

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

In May, Arcos sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes. About 5 days see rain.

light clothes

UV index in Arcos 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 Arcos peaks around January 21 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 21UV 15Jun 20UV 7
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep10Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Arcos 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 Arcos is worst in September — around 20 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (November, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1719 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr8Good
May8Good
Jun8Good
Jul7Good
Aug10Good
Sep20Moderate
Oct12Good
Nov7Good
Dec7Good
Location & terrain

Where is Arcos?

Arcos sits at 20.3°S, 45.5°W, 737 m above sea level, in Brazil. The nearest listed city is Formiga, 23 km away.

Topography around Arcos

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

Within 3 km, the terrain around Arcos has only modest variations in elevation — a maximum elevation change of 130 m around an average of 753 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 405 m; within 80 km, large variations in elevation — a maximum elevation change of 791 m.

The land around Arcos is covered by trees (32%), grassland (31%) and artificial surfaces (28%) within 3 km, trees (42%) and grassland (38%) within 16 km, and grassland (52%) and trees (30%) within 80 km.

3 km
130 m
16 km
405 m
80 km
791 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Formiga 23 km · Lagoa da Prata 29 km · Santo Antônio do Monte 34 km · Água Rasa 42 km · Itapecerica 48 km · Piumhi 48 km · Bambuí 55 km · Luz 56 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 Arcos (-20.2819°, -45.5394°, elevation 737 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).