Campo Maior weather in May

In May, Campo Maior sees average daytime highs of 33°C and overnight lows near 24°C, with 102 mm of rain across 11.4 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 26% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of May to 11 h 42 min by month's end. Set against the rest of the year, May is Campo Maior's 7th-clearest and 8th-windiest month. For the whole year in context, see Campo Maior's year-round climate.

Daytime high
33°
9th warmest
Overnight low
24°
4th coldest
Rainfall
102 mm
11.4 wet days
Daylight
11 h 48 min
5:51 AM – 5:38 PM
Cloud cover
60%
7th clearest
Wind
7 km/h
8th windiest
Solar energy
5.03 kWh/m²
Travel score
3.5
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical May day in Campo Maior reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 35°C. Set against its neighbours, May runs about 1°C warmer than April and about 1°C cooler than June.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113224
123324
133324
143324
153324
163324
173324
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324
313324

How May really feels in Campo Maior

Once humidity and wind are folded in, May averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Campo Maior weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 24°21419.612.22.5
Feb32° / 24°24120.312.22.6
Mar32° / 24°31425.3122.6
Apr32° / 24°2502211.92.8
May33° / 24°10211.411.83.5
Jun34° / 24°143.111.73.8
Jul34° / 24°71.211.73.6
Aug36° / 25°10.311.82.8
Sep37° / 26°20.4121.9
Oct38° / 26°141.412.11.5
Nov37° / 26°253.812.21.7
Dec36° / 26°758.812.32.1

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 25% of May, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23466
33565
43664
53763
63961
74159
84159
94357
104555
114654
124654
134852
144951
155050
165248
175248
185446
195446
205644
215743
225743
235941
246040
256040
266139
276238
286436
296535
306535
316634

Chance of precipitation in May

Any precipitation

Campo Maior gets around 102 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 60% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
160
259
357
455
553
651
749
846
944
1042
1140
1239
1337
1436
1535
1634
1733
1832
1932
2031
2130
2229
2329
2428
2527
2626
2725
2824
2923
3022
3121

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the oppressive band about 78% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1028018
2028117
3038017
4038116
5038215
6038215
7048214
8048313
9048313
10058312
11068212
12068311
13078211
14078310
15088210
1609829
17010819
18011818
19012808
20013807
21014797
22015796
23117766
24118765
25120745
26121744
27123724
28125713
29227683
30229672
31231652

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 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 48 min at the start of May to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over May. Sunrise moves from 5:51 AM to 5:54 AM, and sunset from 5:41 PM to 5:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:515:41
211.85:515:41
311.85:515:40
411.85:515:40
511.85:515:40
611.85:515:40
711.85:515:40
811.85:515:39
911.85:515:39
1011.85:515:39
1111.85:515:39
1211.85:515:39
1311.85:515:39
1411.85:515:39
1511.85:515:38
1611.85:515:38
1711.85:525:38
1811.85:525:38
1911.85:525:38
2011.85:525:38
2111.85:525:38
2211.85:525:38
2311.85:525:38
2411.85:535:38
2511.85:535:38
2611.85:535:38
2711.85:535:38
2811.75:535:38
2911.75:535:38
3011.75:545:38
3111.75:545:38

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.03 kWh/m².

For context, solar energy here swings from a low near 4.94 kWh/m² to a high of 6.85 kWh/m² in October across the year — May's 5.03 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in May

Hazard calendar for Campo Maior

In seasonPeak

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

Campo Maior's monsoon runs January–April, 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 Campo Maior?

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

3.5
Sightseeing
3rd-best month of the year
6.0
Beach & pool
4th-best month of the year

May is a weaker month for outdoor sightseeing in Campo Maior. The water and warmth also suit a beach or pool day.

What to pack for Campo Maior in May

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

In May, Campo Maior sees daytime highs around 33°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Campo Maior in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Campo Maior peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeMar 15UV 15Jul 24UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme

Air quality in Campo Maior 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 Campo Maior is worst in November — around 16 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (July, 4 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1816 µg/m³Jul 155 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb13Moderate
Mar12Moderate
Apr11Good
May8Good
Jun6Good
Jul4Good
Aug6Good
Sep7Good
Oct12Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Campo Maior?

Campo Maior sits at 4.8°S, 42.2°W, 128 m above sea level, in Brazil. The nearest listed city is Altos, 40 km away.

Topography around Campo Maior

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

Within 3 km, the terrain around Campo Maior has only modest variations in elevation — a maximum elevation change of 21 m around an average of 120 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 295 m; within 80 km, significant variations in elevation — a maximum elevation change of 497 m.

The land around Campo Maior is covered by grassland (54%) within 3 km, grassland (60%) and shrubs (27%) within 16 km, and trees (39%), shrubs (36%) and grassland (23%) within 80 km.

3 km
21 m
16 km
295 m
80 km
497 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Altos 40 km · José de Freitas 46 km · Barras 66 km · Piripiri 75 km · Teresina 76 km · Timon 80 km · Demerval Lobão 82 km · União 82 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 Campo Maior (-4.8278°, -42.1686°, elevation 128 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).