Valparaíso weather in May

In May, Valparaíso sees average daytime highs of 27°C and overnight lows near 17°C, with 50 mm of rain across 6.2 wet days and about 11 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 26°C by the end. The sky is clear or mostly clear about 51% 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 Valparaíso's 5th-clearest and 7th-windiest month. For the whole year in context, see Valparaíso's year-round climate.

Daytime high
27°
11th warmest
Overnight low
17°
4th coldest
Rainfall
50 mm
6.2 wet days
Daylight
11 hours
7:50 AM – 6:49 PM
Cloud cover
45%
5th clearest
Wind
9 km/h
7th windiest
Solar energy
4.19 kWh/m²
Travel score
7.2
out of 10

Valparaíso is settlement in Valparaíso, São Paulo, Brazil.

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 28°C in the first days to 26°C by the end.

A typical May day in Valparaíso reaches about 27°C in the afternoon and slips back to 17°C overnight — a 10°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, May runs about 3°C cooler than April and on par with June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12919
22918
32818
42818
52818
62818
72818
82818
92818
102818
112818
122717
132717
142717
152717
162717
172717
182717
192717
202717
212717
222717
232717
242617
252617
262617
272617
282616
292616
302616
312616

How May really feels in Valparaíso

Once humidity and wind are folded in, May 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

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

Valparaíso weather by month

How May compares with the rest of the year at a glance. May is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°26122.513.13.3
Feb31° / 22°19019.512.73.4
Mar31° / 22°15518.712.23.9
Apr30° / 20°65811.55.5
May27° / 17°506.2117.2
Jun27° / 16°313.610.77.8
Jul27° / 16°192.510.87.9
Aug30° / 17°22311.36.4
Sep31° / 19°647.411.94.9
Oct32° / 21°11012.412.54.0
Nov31° / 21°15515.5133.7
Dec31° / 22°19320.813.33.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 10% of May, with mostly cloudy or overcast conditions the remaining 39%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
26931
36832
46733
56634
66535
76337
86337
96238
106040
116040
125941
135842
145842
155842
165842
175941
185842
195842
205941
215842
225941
235941
246040
256040
266040
276040
286040
296040
306139
316139

Chance of precipitation in May

Any precipitation

Valparaíso gets around 50 mm of rain over 6.2 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 20% and peaks near 23% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
117
216
316
416
516
616
717
817
917
1018
1118
1219
1319
1420
1520
1621
1722
1822
1922
2023
2123
2223
2323
2423
2523
2622
2722
2822
2921
3020
3120

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 37% of days. Sticky, muggy-or-worse air turns up on roughly 20% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
182040283
292140272
3102241252
4112341242
5112441232
6122441221
7122541211
8132541201
9132641191
10142641181
11142741181
12152740171
13152740171
14152839171
15162839171
16162838171
17172837171
18172836181
19182836180
20182935180
21192934180
22192933190
23202932190
24202932190
25212932190
26212932190
27212932180
28212932180
29212932180
30212932180
31212932170

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 7:44 AM to 7:56 AM, and sunset from 6:58 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:446:58
211.27:446:57
311.27:456:56
411.27:456:56
511.27:456:55
611.17:466:54
711.17:466:54
811.17:476:53
911.17:476:53
1011.17:476:52
1111.17:486:52
1211.17:486:51
1311.07:496:51
1411.07:496:50
1511.07:506:50
1611.07:506:49
1711.07:506:49
1811.07:516:49
1911.07:516:48
2010.97:526:48
2110.97:526:48
2210.97:536:47
2310.97:536:47
2410.97:536:47
2510.97:546:46
2610.97:546:46
2710.97:556:46
2810.87:556:46
2910.87:566:46
3010.87:566:45
3110.87:566:45

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.19 kWh/m².

For context, solar energy here swings from a low near 3.8 kWh/m² to a high of 6.17 kWh/m² in November across the year — May's 4.19 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.6Bright
54.5Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.3Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.2Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.0Bright
214.0Bright
224.0Moderate
234.0Moderate
244.0Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
313.9Moderate
Planning a trip in May

Hazard calendar for Valparaíso

In seasonPeak

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

Valparaíso'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 Valparaíso?

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

7.2
Sightseeing
3rd-best month of the year
7.5
Beach & pool
4th-best month of the year

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

What to pack for Valparaíso in May

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

In May, Valparaíso sees daytime highs around 27°C and nights near 17°C. Pack light clothes. About 6 days see rain.

light clothes

UV index in Valparaíso in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Valparaíso peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 22UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul6High
Aug8Very high
Sep8Very high
Oct10Extreme
Nov12Extreme
Dec13Extreme

Air quality in Valparaíso 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 Valparaíso is worst in September — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (November, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1719 µg/m³Nov 236 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr7Good
May8Good
Jun7Good
Jul7Good
Aug11Good
Sep20Moderate
Oct13Moderate
Nov6Good
Dec7Good
Location & terrain

Where is Valparaíso?

Valparaíso sits at 21.2°S, 50.9°W, 443 m above sea level, in Brazil. The nearest listed city is Guararapes, 24 km away.

Topography around Valparaíso

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

Within 3 km, the terrain around Valparaíso has only modest variations in elevation — a maximum elevation change of 97 m around an average of 427 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 154 m; within 80 km, significant variations in elevation — a maximum elevation change of 269 m.

The land around Valparaíso is covered by cropland (38%) and grassland (37%) within 3 km, cropland (60%) and grassland (26%) within 16 km, and cropland (51%) and grassland (34%) within 80 km.

3 km
97 m
16 km
154 m
80 km
269 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Guararapes 24 km · Mirandópolis 26 km · Araçatuba 45 km · Adamantina 55 km · Birigui 55 km · Lucélia 57 km · Osvaldo Cruz 63 km · Andradina 65 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 Valparaíso (-21.2278°, -50.8683°, elevation 443 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).