Valença weather in May

In May, Valença sees average daytime highs of 24°C and overnight lows near 15°C, with 54 mm of rain across 9.1 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 29% 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 48 min by month's end. Set against the rest of the year, May is Valença's 4th-clearest and 10th-windiest month. For the whole year in context, see Valença's year-round climate.

Daytime high
24°
10th warmest
Overnight low
15°
4th coldest
Rainfall
54 mm
9.1 wet days
Daylight
10 h 54 min
7:23 AM – 6:19 PM
Cloud cover
58%
4th clearest
Wind
6 km/h
10th windiest
Solar energy
3.56 kWh/m²
Travel score
7.1
out of 10

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 Valença reaches about 24°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 20°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)
12516
22516
32516
42516
52516
62516
72516
82516
92516
102516
112416
122416
132415
142415
152415
162415
172415
182415
192415
202415
212415
222415
232415
242415
252415
262415
272415
282415
292415
302415
312415

Valença 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°30222.413.23.9
Feb29° / 20°21917.812.84.1
Mar28° / 19°22020.912.24.5
Apr27° / 18°9513.211.56.0
May24° / 15°549.110.97.1
Jun24° / 14°265.410.77.8
Jul24° / 14°265.210.87.9
Aug25° / 14°306.211.27.7
Sep26° / 16°7610.711.96.6
Oct26° / 17°13715.612.55.6
Nov27° / 18°24320.413.14.7
Dec28° / 19°29823.113.34.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35347
45248
55248
65149
75050
85050
94753
104753
114753
124654
134555
144456
154456
164456
174456
184456
194555
204654
214654
224753
234753
244852
254951
264951
275050
285050
295149
305149
315248

Chance of precipitation in May

Any precipitation

Valença gets around 54 mm of rain over 9.1 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 30% and peaks near 35% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
534
634
734
834
933
1033
1133
1232
1332
1431
1530
1630
1729
1828
1928
2027
2127
2226
2326
2425
2525
2625
2725
2824
2924
3024
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 44% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13285019
24295018
34305016
45314915
55324913
66334912
76344811
87354811
97354810
10836479
11836479
12936478
13937477
14937477
151038466
161038466
171039455
181140455
191141444
201141444
211242434
221242424
231243413
241344413
251344403
261444393
271445383
281545382
291545372
301645372
311645363

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 12 min at the start of May to 10 h 48 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 7:16 AM to 7:30 AM, and sunset from 6:28 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:166:28
211.27:176:27
311.27:176:26
411.17:186:26
511.17:186:25
611.17:186:24
711.17:196:24
811.17:196:23
911.07:206:23
1011.07:206:22
1111.07:216:22
1211.07:216:21
1311.07:226:21
1411.07:226:20
1511.07:226:20
1610.97:236:19
1710.97:236:19
1810.97:246:18
1910.97:246:18
2010.97:256:18
2110.97:256:17
2210.97:266:17
2310.87:266:17
2410.87:276:16
2510.87:276:16
2610.87:276:16
2710.87:286:15
2810.87:286:15
2910.87:296:15
3010.87:296:15
3110.87:306:15

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.56 kWh/m².

For context, solar energy here swings from a low near 3.41 kWh/m² to a high of 5.77 kWh/m² in February across the year — May's 3.56 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.9Moderate
63.8Moderate
73.8Moderate
83.7Moderate
93.7Moderate
103.7Moderate
113.6Moderate
123.6Moderate
133.6Moderate
143.5Moderate
153.5Moderate
163.5Moderate
173.5Moderate
183.4Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.4Moderate
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 Valença

In seasonPeak

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

Valença'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 Valença?

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

7.1
Sightseeing
4th-best month of the year
6.1
Beach & pool
5th-best month of the year

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

What to pack for Valença in May

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

In May, Valença sees daytime highs around 24°C and nights near 15°C. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Valença 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 Valença peaks around January 20 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 20UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep7High
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Valença 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 Valença is worst in July — around 38 µg/m³ PM2.5 (poor), about 2.0× the cleanest month (December, 19 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateJul 1237 µg/m³Dec 2319 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb19Moderate
Mar21Moderate
Apr24Moderate
May31Moderate
Jun36Poor
Jul38Poor
Aug32Moderate
Sep37Poor
Oct24Moderate
Nov20Moderate
Dec19Moderate
Location & terrain

Where is Valença?

Valença sits at 22.2°S, 43.7°W, 560 m above sea level, in Brazil. The nearest listed city is Vassouras, 18 km away.

Topography around Valença

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

Within 3 km, the terrain around Valença has significant variations in elevation — a maximum elevation change of 523 m around an average of 617 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 770 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,224 m.

The land around Valença is covered by grassland (60%) and trees (25%) within 3 km, grassland (64%) and trees (35%) within 16 km, and trees (48%) and grassland (46%) within 80 km.

3 km
523 m
16 km
770 m
80 km
2,224 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Vassouras 18 km · Barra do Piraí 28 km · Mendes 31 km · Miguel Pereira 33 km · Paty do Alferes 35 km · Paracambi 40 km · Pinheiral 43 km · Paraíba do Sul 43 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 Valença (-22.2456°, -43.7003°, elevation 560 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).