Casimiro de Abreu weather in April

In April, Casimiro de Abreu sees average daytime highs of 27°C and overnight lows near 19°C, with 119 mm of rain across 14.9 wet days and about 11.5 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 32% of the time in April, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of April to 11 h 12 min by month's end. Set against the rest of the year, April is Casimiro de Abreu's 5th-clearest and 11th-windiest month. For the whole year in context, see Casimiro de Abreu's year-round climate.

Daytime high
27°
5th warmest
Overnight low
19°
7th coldest
Rainfall
119 mm
14.9 wet days
Daylight
11 h 30 min
7:05 AM – 6:33 PM
Cloud cover
57%
5th clearest
Wind
7 km/h
11th windiest
Solar energy
4.59 kWh/m²
Travel score
5.8
out of 10

Casimiro de Abreu is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical April day in Casimiro de Abreu reaches about 27°C in the afternoon and slips back to 19°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 30°C. Set against its neighbours, April runs about 1°C cooler than March and about 2°C warmer than May.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12820
22820
32820
42820
52720
62720
72720
82720
92720
102720
112720
122719
132719
142719
152719
162719
172719
182719
192719
202719
212719
222719
232719
242719
252718
262618
272618
282618
292618
302618

How April really feels in Casimiro de Abreu

Once humidity and wind are folded in, April 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

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Casimiro de Abreu weather by month

How April compares with the rest of the year at a glance. April is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 21°29121.613.24.0
Feb29° / 21°21016.812.84.2
Mar28° / 21°24021.512.24.3
Apr27° / 19°11914.911.55.8
May25° / 17°7912.210.96.6
Jun24° / 16°437.310.77.6
Jul24° / 15°407.410.87.7
Aug25° / 16°488.211.27.4
Sep25° / 17°10412.911.96.4
Oct26° / 18°1541612.55.6
Nov26° / 19°27521.213.14.7
Dec28° / 21°30822.913.44.2

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 22% of April, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24555
34654
44753
54852
64852
74852
85050
95050
105149
115248
125248
135347
145347
155347
165545
175545
185545
195644
205743
215743
225743
235842
245941
255941
265941
275941
286040
296139
306139

Chance of precipitation in April

Any precipitation

Casimiro de Abreu gets around 119 mm of rain over 14.9 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 50% and peaks near 63% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
163
262
361
460
559
658
757
856
955
1054
1153
1252
1351
1450
1549
1648
1747
1847
1946
2045
2145
2244
2343
2443
2543
2642
2742
2841
2941
3041

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the muggy band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
10114940
20125039
30125137
40135136
50135334
60145333
71145431
81155430
91165528
101165627
111175626
121185724
131185823
141195822
152205820
162205919
172215918
182225917
192235916
203245914
213255913
223265912
234285711
24429589
25531568
26532567
27633556
28635545
29736525
30838504

Wind in April

Winds average 7 km/h in April.

Across April, 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.

0246810151015202530
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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 48 min at the start of April to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over April. Sunrise moves from 6:59 AM to 7:10 AM, and sunset from 6:48 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:596:48
211.87:006:47
311.87:006:46
411.77:006:45
511.77:016:44
611.77:016:43
711.77:016:42
811.77:026:41
911.67:026:40
1011.67:026:39
1111.67:036:38
1211.67:036:37
1311.57:046:36
1411.57:046:35
1511.57:046:34
1611.57:056:33
1711.57:056:33
1811.47:056:32
1911.47:066:31
2011.47:066:30
2111.47:076:29
2211.47:076:28
2311.37:076:27
2411.37:086:27
2511.37:086:26
2611.37:096:25
2711.37:096:24
2811.27:096:24
2911.27:106:23
3011.27:106:22

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.59 kWh/m².

For context, solar energy here swings from a low near 3.54 kWh/m² to a high of 6.21 kWh/m² in February across the year — April's 4.59 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.4Bright
244.4Bright
254.4Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.2Bright
Planning a trip in April

Hazard calendar for Casimiro de Abreu

In seasonPeak

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

Casimiro de Abreu's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit Casimiro de Abreu?

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

5.8
Sightseeing
6th-best month of the year
5.8
Beach & pool
6th-best month of the year

April is a reasonable time to visit Casimiro de Abreu for sightseeing.

What to pack for Casimiro de Abreu in April

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

In April, Casimiro de Abreu sees daytime highs around 27°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

Sea temperature near Casimiro de Abreu in April

The nearest coast averages about 25°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 37 km away) is warmest in March at about 25°C and coldest in September near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°22°24°26°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan24Refreshing
Feb24Warm
Mar25Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug22Refreshing
Sep21Refreshing
Oct22Refreshing
Nov22Refreshing
Dec24Refreshing

UV index in Casimiro de Abreu in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Casimiro de Abreu peaks around January 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 17UV 14Jul 11UV 6
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep7Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme
Location & terrain

Where is Casimiro de Abreu?

Casimiro de Abreu sits at 22.5°S, 42.2°W, 23 m above sea level, in Brazil. The nearest listed city is Silva Jardim, 27 km away.

Topography around Casimiro de Abreu

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

Within 3 km, the terrain around Casimiro de Abreu has significant variations in elevation — a maximum elevation change of 480 m around an average of 71 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,325 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Casimiro de Abreu is covered by trees (51%) and grassland (39%) within 3 km, trees (59%) and grassland (32%) within 16 km, and trees (37%), grassland (31%) and water (30%) within 80 km.

3 km
480 m
16 km
1,325 m
80 km
2,252 m
treesgrasslandcroplandartificial surfaceswaterwetland
April weather nearby: Silva Jardim 27 km · Rio das Ostras 27 km · Iguaba Grande 40 km · Nova Friburgo 40 km · São Pedro da Aldeia 41 km · Bom Jardim 43 km · Buzios 44 km · Macaé 45 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 Casimiro de Abreu (-22.4806°, -42.2042°, elevation 23 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).