Barra Mansa weather in May

In May, Barra Mansa sees average daytime highs of 25°C and overnight lows near 15°C, with 48 mm of rain across 8.4 wet days and about 10.9 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 24°C by the end. The sky is clear or mostly clear about 33% of the time in May, and the air most often feels humid.

Daylight stretches from about 11 h 12 min at the start of May to 10 h 42 min by month's end. Set against the rest of the year, May is Barra Mansa's 4th-clearest and 10th-windiest month. For the whole year in context, see Barra Mansa's year-round climate.

Daytime high
25°
10th warmest
Overnight low
15°
4th coldest
Rainfall
48 mm
8.4 wet days
Daylight
10 h 54 min
7:25 AM – 6:21 PM
Cloud cover
56%
4th clearest
Wind
5 km/h
10th windiest
Solar energy
3.63 kWh/m²
Travel score
7.2
out of 10

Barra Mansa is human settlement in Brazil.

Air quality
Moderate
PM10 30.1 µg/m³ · 2019

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 24°C by the end.

A typical May day in Barra Mansa reaches about 25°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 28°C. Set against its neighbours, May runs about 2°C cooler than April and on par with June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12616
22616
32616
42516
52516
62516
72516
82516
92516
102515
112515
122515
132515
142415
152415
162415
172415
182415
192415
202415
212415
222415
232415
242415
252415
262414
272414
282414
292414
302414
312414

Barra Mansa weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°28222.113.23.9
Feb29° / 20°20517.512.84.2
Mar28° / 19°19420.212.24.6
Apr27° / 18°8611.711.56.2
May25° / 15°488.410.97.2
Jun24° / 14°275.310.67.9
Jul24° / 13°285.310.88.0
Aug25° / 14°275.311.27.8
Sep26° / 16°6910.711.96.6
Oct27° / 17°11714.712.55.7
Nov27° / 18°2041913.14.9
Dec28° / 20°24921.313.44.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45446
55446
65446
75248
85149
95149
105050
114852
124852
134753
144753
154654
164555
174654
184654
194654
204852
214951
224951
234951
245050
255050
265050
275149
285149
295248
305248
315248

Chance of precipitation in May

Any precipitation

Barra Mansa gets around 48 mm of rain over 8.4 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 28% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
131
231
330
430
529
629
729
828
928
1028
1128
1228
1328
1428
1527
1627
1727
1827
1927
2027
2127
2227
2327
2427
2526
2626
2726
2826
2925
3025
3124

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 46% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13245122
23255220
34275019
44285117
55295016
65305114
76305113
86315112
97325011
107335011
117335010
12834499
13835498
14835498
15936487
16937486
17938476
18939475
191040464
201040454
211041454
221142443
231143433
241243423
251244413
261345403
271345393
281446382
291446373
301546363
311646363

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 12 min at the start of May to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over May. Sunrise moves from 7:19 AM to 7:32 AM, and sunset from 6:29 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:196:29
211.27:196:29
311.17:196:28
411.17:206:27
511.17:206:27
611.17:216:26
711.17:216:25
811.17:226:25
911.07:226:24
1011.07:236:24
1111.07:236:23
1211.07:236:23
1311.07:246:22
1411.07:246:22
1510.97:256:21
1610.97:256:21
1710.97:266:20
1810.97:266:20
1910.97:276:19
2010.97:276:19
2110.87:286:19
2210.87:286:18
2310.87:296:18
2410.87:296:18
2510.87:296:17
2610.87:306:17
2710.87:306:17
2810.87:316:17
2910.87:316:16
3010.77:326:16
3110.77:326:16

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.63 kWh/m².

For context, solar energy here swings from a low near 3.47 kWh/m² to a high of 5.62 kWh/m² in February across the year — May's 3.63 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.0Moderate
43.9Moderate
53.9Moderate
63.9Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.7Moderate
113.7Moderate
123.7Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.5Moderate
173.5Moderate
183.5Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.4Moderate
243.4Moderate
253.4Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.4Moderate
303.4Moderate
313.4Moderate
Planning a trip in May

Hazard calendar for Barra Mansa

In seasonPeak

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

Barra Mansa's monsoon runs November–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 Barra Mansa?

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

7.2
Sightseeing
4th-best month of the year
6.3
Beach & pool
4th-best month of the year

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

What to pack for Barra Mansa in May

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

In May, Barra Mansa sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

Sea temperature near Barra Mansa in May

The nearest coast averages about 24°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 68 km away) is warmest in February at about 27°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°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr26Warm
May24Warm
Jun23Refreshing
Jul22Refreshing
Aug21Refreshing
Sep22Refreshing
Oct23Refreshing
Nov23Refreshing
Dec25Warm

UV index in Barra Mansa in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Barra Mansa peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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 24UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr10Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep7High
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Barra Mansa 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 Barra Mansa 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 Barra Mansa?

Barra Mansa sits at 22.5°S, 44.2°W, 380 m above sea level, in Brazil. The nearest listed city is Volta Redonda, 7.0 km away.

Topography around Barra Mansa

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

Within 3 km, the terrain around Barra Mansa has only modest variations in elevation — a maximum elevation change of 185 m around an average of 427 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 415 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,761 m.

The land around Barra Mansa is covered by trees (36%), grassland (31%) and artificial surfaces (30%) within 3 km, grassland (59%) and trees (33%) within 16 km, and trees (48%) and grassland (36%) within 80 km.

3 km
185 m
16 km
415 m
80 km
2,761 m
treesgrasslandartificial surfaceswater
May weather nearby: Volta Redonda 7.0 km · Pinheiral 18 km · Porto Real 18 km · Rio Claro 20 km · Resende 29 km · Piraí 30 km · Barra do Piraí 36 km · Itatiaia 41 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 Barra Mansa (-22.5442°, -44.1714°, elevation 380 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).