Cassilândia weather in May

In May, Cassilândia sees average daytime highs of 28°C and overnight lows near 17°C, with 38 mm of rain across 5.3 wet days and about 11.1 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 49% of the time in May, and the air most often feels humid.

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 Cassilândia's 5th-clearest and 6th-windiest month. For the whole year in context, see Cassilândia's year-round climate.

Daytime high
28°
11th warmest
Overnight low
17°
4th coldest
Rainfall
38 mm
5.3 wet days
Daylight
11 h 06 min
6:50 AM – 5:56 PM
Cloud cover
45%
5th clearest
Wind
7 km/h
6th windiest
Solar energy
4.45 kWh/m²
Travel score
7.1
out of 10

Cassilândia 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

Day-to-day highs hold fairly steady near 28°C through the month.

A typical May day in Cassilândia reaches about 28°C in the afternoon and slips back to 17°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°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
22918
32918
42918
52918
62918
72818
82818
92818
102818
112817
122817
132817
142817
152817
162817
172817
182817
192817
202717
212717
222717
232717
242717
252717
262717
272717
282717
292716
302716
312716

How May really feels in Cassilândia

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.

Cassilândia 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° / 21°26424.6133.2
Feb30° / 21°21521.712.63.2
Mar30° / 21°20022.112.13.6
Apr30° / 20°7811.111.65.1
May28° / 17°385.311.17.1
Jun28° / 16°122.110.97.9
Jul28° / 16°101.5117.7
Aug30° / 17°172.411.46.2
Sep32° / 20°607.711.94.5
Oct32° / 21°12516.412.43.6
Nov31° / 21°18820.112.93.4
Dec30° / 21°23724.513.13.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17129
27129
37030
47030
56832
66832
76733
86535
96436
106337
116238
126139
136139
146040
156040
166040
176040
186040
196139
206139
216238
226238
236337
246436
256535
266634
276634
286733
296733
306733
316832

Chance of precipitation in May

Any precipitation

Cassilândia gets around 38 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 17% and peaks near 19% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
117
217
316
416
516
616
716
816
916
1016
1117
1217
1317
1418
1518
1619
1719
1819
1919
2019
2119
2219
2319
2418
2518
2617
2717
2816
2915
3015
3114

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 40% of days. Sticky, muggy-or-worse air turns up on roughly 21% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
162138333
272239312
372239292
482340272
582441261
692441241
792542231
892542221
9102642211
10102642211
11112642201
12112642200
13112642200
14122642190
15122742190
16132742190
17132741190
18142741190
19142740190
20152740190
21162739180
22162739180
23172739180
24172738170
25172838170
26172839160
27172839160
28172939150
29172939140
30173039140
31173139130

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.

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
288calm
298calm
308calm
318calm

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 6:45 AM to 6:56 AM, and sunset from 6:04 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.36:456:04
211.36:456:03
311.36:456:02
411.36:466:02
511.36:466:01
611.26:466:01
711.26:476:00
811.26:476:00
911.26:485:59
1011.26:485:59
1111.26:485:58
1211.26:495:58
1311.16:495:57
1411.16:495:57
1511.16:505:57
1611.16:505:56
1711.16:515:56
1811.16:515:55
1911.16:515:55
2011.16:525:55
2111.06:525:55
2211.06:535:54
2311.06:535:54
2411.06:535:54
2511.06:545:54
2611.06:545:53
2711.06:545:53
2811.06:555:53
2911.06:555:53
3011.06:565:53
3110.96:565:53

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.45 kWh/m².

For context, solar energy here swings from a low near 4.11 kWh/m² to a high of 6.1 kWh/m² in October across the year — May's 4.45 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.7Bright
94.6Bright
104.6Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.4Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in May

Hazard calendar for Cassilândia

In seasonPeak

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

Cassilândia's monsoon runs October–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 Cassilândia?

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

7.1
Sightseeing
3rd-best month of the year
7.7
Beach & pool
4th-best month of the year

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

What to pack for Cassilândia in May

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

In May, Cassilândia sees daytime highs around 28°C and nights near 17°C. Pack light clothes. About 5 days see rain.

light clothes

UV index in Cassilândia in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cassilândia peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 24UV 15Jun 21UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun7High
Jul7Very high
Aug9Very high
Sep9Very high
Oct10Extreme
Nov13Extreme
Dec14Extreme

Air quality in Cassilândia 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 Cassilândia is worst in September — around 18 µg/m³ PM2.5 (moderate), about 4.8× the cleanest month (July, 4 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1817 µg/m³Jul 114 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar6Good
Apr5Good
May6Good
Jun4Good
Jul4Good
Aug7Good
Sep18Moderate
Oct11Good
Nov5Good
Dec6Good
Location & terrain

Where is Cassilândia?

Cassilândia sits at 19.1°S, 51.7°W, 475 m above sea level, in Brazil. The nearest listed city is Paranaíba, 85 km away.

Topography around Cassilândia

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

Within 3 km, the terrain around Cassilândia has only modest variations in elevation — a maximum elevation change of 172 m around an average of 484 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 370 m; within 80 km, significant variations in elevation — a maximum elevation change of 492 m.

The land around Cassilândia is covered by grassland (42%) and trees (25%) within 3 km, grassland (48%) and trees (31%) within 16 km, and grassland (44%), cropland (31%) and trees (22%) within 80 km.

3 km
172 m
16 km
370 m
80 km
492 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Paranaíba 85 km · Chapadão do Sul 100 km · São Simão 126 km · Aparecida do Taboado 127 km · Jataí 137 km · Santa Fé do Sul 149 km · Ilha Solteira 152 km · Quirinópolis 154 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 Cassilândia (-19.1133°, -51.7342°, elevation 475 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).