Piraí weather in April

In April, Piraí sees average daytime highs of 27°C and overnight lows near 19°C, with 117 mm of rain across 14.5 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 29% 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 Piraí's 5th-clearest and 11th-windiest month. For the whole year in context, see Piraí's year-round climate.

Daytime high
27°
5th warmest
Overnight low
19°
7th coldest
Rainfall
117 mm
14.5 wet days
Daylight
11 h 30 min
7:12 AM – 6:40 PM
Cloud cover
58%
5th clearest
Wind
5 km/h
11th windiest
Solar energy
4.31 kWh/m²
Travel score
5.8
out of 10

Piraí 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 Piraí 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 23°C and 31°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
52820
62820
72820
82820
92720
102720
112720
122720
132720
142720
152719
162719
172719
182719
192719
202719
212719
222719
232719
242719
252719
262719
272618
282618
292618
302618

How April really feels in Piraí

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.

Piraí 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° / 22°30923.513.23.6
Feb30° / 22°2221912.83.8
Mar29° / 21°22522.612.24.1
Apr27° / 19°11714.511.55.8
May25° / 17°7011.310.96.7
Jun24° / 16°406.710.67.6
Jul24° / 15°427.410.87.7
Aug25° / 16°37711.27.5
Sep26° / 17°8111.811.96.4
Oct27° / 19°12015.612.55.5
Nov27° / 20°20020.413.14.7
Dec28° / 21°25223.213.44.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 21% of April, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
24060
34060
44258
54258
64357
74555
84555
94654
104753
114753
124852
134951
145050
155149
165149
175248
185347
195347
205446
215446
225644
235644
245743
255743
265743
275842
285842
295842
305842

Chance of precipitation in April

Any precipitation

Piraí gets around 117 mm of rain over 14.5 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 49% 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
1152
1251
1350
1449
1547
1646
1745
1844
1943
2042
2142
2241
2341
2441
2540
2640
2740
2840
2940
3040

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 58% of days. Sticky, muggy-or-worse air turns up on roughly 74% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
101115731
201125829
301125928
401135927
501136026
601146124
701146223
801156222
902166121
1002176120
1102176219
1202186218
1302196217
1402206216
1502216215
1602216314
1702226313
1803236212
1903256012
2003266011
2103285910
220329599
230431578
240433567
250435556
260537526
270539515
280640494
291742474
301843454

Wind in April

Winds average 5 km/h in April.

Across April, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 7:06 AM to 7:17 AM, and sunset from 6:54 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.87:066:54
211.87:066:53
311.87:076:52
411.77:076:51
511.77:086:50
611.77:086:49
711.77:086:49
811.67:096:48
911.67:096:47
1011.67:096:46
1111.67:106:45
1211.67:106:44
1311.57:106:43
1411.57:116:42
1511.57:116:41
1611.57:126:40
1711.57:126:39
1811.47:126:38
1911.47:136:37
2011.47:136:37
2111.47:136:36
2211.47:146:35
2311.37:146:34
2411.37:156:33
2511.37:156:33
2611.37:156:32
2711.37:166:31
2811.27:166:30
2911.27:176:29
3011.27:176:29

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.31 kWh/m².

For context, solar energy here swings from a low near 3.36 kWh/m² to a high of 5.81 kWh/m² in February across the year — April's 4.31 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.0Bright
304.0Bright
Planning a trip in April

Hazard calendar for Piraí

In seasonPeak

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

Piraí's rainy season runs November–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 Piraí?

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
5.9
Beach & pool
6th-best month of the year

April is a reasonable time to visit Piraí for sightseeing.

What to pack for Piraí in April

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

In April, Piraí sees daytime highs around 27°C and nights near 19°C. Pack light clothes and rain gear. About 15 days see rain.

light clothesrain gear

Sea temperature near Piraí 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 55 km away) is warmest in February at about 26°C and coldest in August near 21°C.

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

20°22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec24Warm

UV index in Piraí in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Piraí peaks around February 9 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 9UV 14Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep7High
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Piraí in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Piraí is worst in September — around 33 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 15 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1332 µg/m³Dec 2115 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb16Moderate
Mar17Moderate
Apr19Moderate
May24Moderate
Jun29Moderate
Jul31Moderate
Aug27Moderate
Sep33Moderate
Oct20Moderate
Nov17Moderate
Dec15Moderate
Location & terrain

Where is Piraí?

Piraí sits at 22.6°S, 43.9°W, 381 m above sea level, in Brazil. The nearest listed city is Pinheiral, 17 km away.

Topography around Piraí

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

Within 3 km, the terrain around Piraí has only modest variations in elevation — a maximum elevation change of 209 m around an average of 430 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 806 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,556 m.

The land around Piraí is covered by trees (51%) and grassland (37%) within 3 km, trees (53%) and grassland (43%) within 16 km, and trees (43%), grassland (31%) and water (20%) within 80 km.

3 km
209 m
16 km
806 m
80 km
2,556 m
treesgrasslandartificial surfaceswater
April weather nearby: Pinheiral 17 km · Barra do Piraí 19 km · Paracambi 19 km · Mendes 20 km · Seropédica 23 km · Volta Redonda 24 km · Japeri 25 km · Universidade Rural 26 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 Piraí (-22.6292°, -43.8981°, elevation 381 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. 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).