Buzios weather in May

In May, Buzios sees average daytime highs of 25°C and overnight lows near 21°C, with 57 mm of rain across 9.8 wet days and about 10.9 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 49% of the time in May, and the air most often feels muggy.

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 Buzios's 4th-clearest and 10th-windiest month. For the whole year in context, see Buzios's year-round climate.

Daytime high
25°
7th warmest
Overnight low
21°
5th coldest
Rainfall
57 mm
9.8 wet days
Daylight
10 h 54 min
7:16 AM – 6:11 PM
Cloud cover
45%
4th clearest
Wind
14 km/h
10th windiest
Solar energy
3.87 kWh/m²
Travel score
7.2
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical May day in Buzios reaches about 25°C in the afternoon and slips back to 21°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, May runs about 2°C cooler than April and on par with June.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12622
22622
32622
42622
52522
62522
72521
82521
92521
102521
112521
122521
132521
142521
152521
162521
172521
182521
192521
202521
212521
222521
232521
242421
252421
262421
272420
282420
292420
302420
312420

Buzios weather by month

How May compares with the rest of the year at a glance. May is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°13011.113.26.2
Feb28° / 24°838.412.86.5
Mar28° / 24°12612.912.26.1
Apr27° / 23°649.911.56.8
May25° / 21°579.810.97.2
Jun24° / 20°32610.68.0
Jul24° / 19°336.610.77.9
Aug24° / 20°316.211.28.0
Sep24° / 20°568.411.97.4
Oct25° / 21°759.212.57.0
Nov25° / 22°13913.313.16.1
Dec27° / 23°14213.213.46.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% 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 32%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27228
37129
47129
57129
67129
77030
87030
96832
106733
116733
126634
136634
146535
156535
166535
176436
186436
196436
206436
216634
226634
236634
246733
256832
266931
276931
287129
297129
307129
317228

Chance of precipitation in May

Any precipitation

Buzios gets around 57 mm of rain over 9.8 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 32% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
132
232
332
432
532
632
732
832
932
1032
1133
1233
1333
1433
1533
1633
1733
1833
1933
2033
2133
2233
2332
2432
2531
2631
2730
2829
2929
3028
3127

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 47% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11204237
22214335
32224433
42224431
52234530
63244529
73244527
83254526
93264526
104264525
114274524
124284623
134284622
145294620
155294619
165304719
175304718
185304717
196314816
206314815
216314914
226314914
237314913
247315012
258315011
268315011
278315110
289315010
299305110
3010305010
3110305010

Wind in May

Winds average 14 km/h in May.

Across May, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

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 7:10 AM to 7:23 AM, and sunset from 6:20 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:106:20
211.27:106:19
311.17:116:18
411.17:116:18
511.17:116:17
611.17:126:16
711.17:126:16
811.07:136:15
911.07:136:15
1011.07:146:14
1111.07:146:14
1211.07:156:13
1311.07:156:13
1410.97:166:12
1510.97:166:12
1610.97:166:11
1710.97:176:11
1810.97:176:10
1910.97:186:10
2010.97:186:09
2110.87:196:09
2210.87:196:09
2310.87:206:08
2410.87:206:08
2510.87:216:08
2610.87:216:08
2710.87:226:07
2810.87:226:07
2910.77:226:07
3010.77:236:07
3110.77:236:06

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.87 kWh/m².

For context, solar energy here swings from a low near 3.58 kWh/m² to a high of 6.51 kWh/m² in February across the year — May's 3.87 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.2Bright
54.2Bright
64.2Bright
74.1Bright
84.1Bright
94.1Bright
104.0Bright
114.0Moderate
124.0Moderate
133.9Moderate
143.9Moderate
153.8Moderate
163.8Moderate
173.8Moderate
183.7Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.7Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.6Moderate
303.6Moderate
313.6Moderate
Planning a trip in May

Hazard calendar for Buzios

In seasonPeak

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

Buzios's rainy season runs October–April, when most of the year's rain falls.

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

Is May a good time to visit Buzios?

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

7.2
Sightseeing
5th-best month of the year
6.4
Beach & pool
7th-best month of the year

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

What to pack for Buzios in May

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

In May, Buzios sees daytime highs around 25°C and nights near 21°C. Worth packing: light clothes and rain gear. About 10 days see rain.

light clothesrain gear

Sea temperature near Buzios 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 14 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 Buzios 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 Buzios peaks around January 15 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 highExtremeJan 15UV 14Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep7High
Oct11Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Buzios?

Buzios sits at 22.7°S, 41.9°W, 9 m above sea level, in Brazil. The nearest listed city is Cabo Frio, 22 km away.

Topography around Buzios

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

Within 3 km, the terrain around Buzios has only modest variations in elevation — a maximum elevation change of 112 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 179 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,806 m.

The land around Buzios is covered by water (73%) within 3 km, water (82%) within 16 km, and water (49%), trees (25%) and grassland (23%) within 80 km.

3 km
112 m
16 km
179 m
80 km
1,806 m
treesgrasslandartificial surfaceswaterwetland
May weather nearby: Cabo Frio 22 km · São Pedro da Aldeia 25 km · Rio das Ostras 25 km · Arraial do Cabo 29 km · Iguaba Grande 37 km · Macaé 42 km · Casimiro de Abreu 44 km · Araruama 49 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 Buzios (-22.7469°, -41.8817°, elevation 9 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).