Caxias weather in May

In May, Caxias sees average daytime highs of 32°C and overnight lows near 23°C, with 128 mm of rain across 14.9 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 32°C through the month. The sky is clear or mostly clear about 23% 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 Caxias's 7th-clearest and 8th-windiest month. For the whole year in context, see Caxias's year-round climate.

Daytime high
32°
9th warmest
Overnight low
23°
7th coldest
Rainfall
128 mm
14.9 wet days
Daylight
11 h 48 min
5:56 AM – 5:43 PM
Cloud cover
62%
7th clearest
Wind
6 km/h
8th windiest
Solar energy
4.81 kWh/m²
Travel score
3.7
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical May day in Caxias reaches about 32°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, May runs on par with April and about 1°C cooler than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143223
153223
163223
173223
183223
193223
203223
213223
223223
233223
243223
253223
263223
273223
283223
293223
303223
313223

How May really feels in Caxias

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.

Caxias 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
Jan32° / 23°23624.312.32.7
Feb31° / 23°27223.412.22.7
Mar31° / 23°34527.9122.6
Apr31° / 23°28225.311.92.8
May32° / 23°12814.911.83.7
Jun32° / 23°224.411.74.4
Jul33° / 23°101.811.74.2
Aug35° / 23°30.511.83.5
Sep36° / 24°51.1122.6
Oct36° / 25°142.412.12.2
Nov35° / 25°477.112.22.5
Dec34° / 24°1041312.32.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% 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 52%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
23070
33169
43268
53466
63565
73763
83862
94060
104159
114456
124555
134753
144852
154951
165050
175248
185347
195446
205545
215644
225644
235842
245842
255941
266139
276139
286238
296337
306436
316436

Chance of precipitation in May

Any precipitation

Caxias gets around 128 mm of rain over 14.9 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 48% and peaks near 70% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
170
269
367
465
563
661
759
857
955
1053
1151
1249
1348
1447
1546
1645
1745
1844
1943
2043
2142
2241
2341
2440
2539
2638
2737
2835
2934
3033
3131

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 64% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
105149
205149
305248
405347
505446
605545
705743
805842
905941
1006040
1106139
1216039
1316138
1416237
1516336
1616435
1716534
1826533
1926632
2026731
2126929
2236928
2347026
2447125
2557223
2667321
2777320
2887418
2997516
30107614
31127513

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 6 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
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 5:56 AM to 5:59 AM, and sunset from 5:46 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:565:46
211.85:565:45
311.85:565:45
411.85:565:45
511.85:565:45
611.85:565:44
711.85:565:44
811.85:565:44
911.85:565:44
1011.85:565:44
1111.85:565:44
1211.85:565:43
1311.85:565:43
1411.85:565:43
1511.85:565:43
1611.85:565:43
1711.85:565:43
1811.85:565:43
1911.85:575:43
2011.85:575:43
2111.85:575:43
2211.85:575:43
2311.85:575:43
2411.85:575:43
2511.85:575:43
2611.85:585:43
2711.85:585:43
2811.75:585:43
2911.75:585:43
3011.75:585:43
3111.75:595:43

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.81 kWh/m².

For context, solar energy here swings from a low near 4.57 kWh/m² to a high of 6.53 kWh/m² in October across the year — May's 4.81 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
315.0Bright
Planning a trip in May

Hazard calendar for Caxias

In seasonPeak

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

Caxias'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 Caxias?

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

3.7
Sightseeing
3rd-best month of the year
5.8
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Caxias.

What to pack for Caxias in May

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

In May, Caxias sees daytime highs around 32°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Caxias 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 Caxias peaks around March 13 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 13UV 15Jul 24UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Caxias 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 Caxias is worst in October — around 33 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (May, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1532 µg/m³May 1512 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb15Moderate
Mar14Moderate
Apr13Moderate
May11Good
Jun13Moderate
Jul27Moderate
Aug28Moderate
Sep29Moderate
Oct33Moderate
Nov28Moderate
Dec20Moderate
Location & terrain

Where is Caxias?

Caxias sits at 4.9°S, 43.4°W, 83 m above sea level, in Brazil. The nearest listed city is Aldeias Altas, 29 km away.

Topography around Caxias

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

Within 3 km, the terrain around Caxias has only modest variations in elevation — a maximum elevation change of 73 m around an average of 82 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 147 m; within 80 km, significant variations in elevation — a maximum elevation change of 259 m.

The land around Caxias is covered by artificial surfaces (42%) and trees (31%) within 3 km, trees (67%) and shrubs (21%) within 16 km, and trees (70%) within 80 km.

3 km
73 m
16 km
147 m
80 km
259 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Aldeias Altas 29 km · São João do Soter 58 km · União 62 km · Timon 63 km · Teresina 67 km · Codó 74 km · Matões 75 km · Coelho Neto 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 Caxias (-4.8589°, -43.3561°, elevation 83 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).