Biguaçu weather in May

In May, Biguaçu sees average daytime highs of 22°C and overnight lows near 14°C, with 113 mm of rain across 10.8 wet days and about 10.7 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 21°C by the end. The sky is clear or mostly clear about 31% of the time in May, and the air most often feels humid.

Daylight stretches from about 11 hours at the start of May to 10 h 24 min by month's end. Set against the rest of the year, May is Biguaçu's 3rd-clearest and 9th-windiest month. For the whole year in context, see Biguaçu's year-round climate.

Daytime high
22°
8th warmest
Overnight low
14°
5th coldest
Rainfall
113 mm
10.8 wet days
Daylight
10 h 36 min
7:52 AM – 6:30 PM
Cloud cover
60%
3rd clearest
Wind
7 km/h
9th windiest
Solar energy
3 kWh/m²
Travel score
6.6
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 21°C by the end.

A typical May day in Biguaçu reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 26°C. Set against its neighbours, May runs about 3°C cooler than April and about 2°C warmer than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12416
22415
32415
42315
52315
62315
72315
82315
92315
102315
112314
122214
132214
142214
152214
162214
172214
182214
192214
202214
212214
222214
232213
242113
252113
262113
272113
282113
292113
302113
312113

Biguaçu weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°23422.613.54.4
Feb28° / 20°21320.3134.4
Mar27° / 19°14919.612.25.0
Apr25° / 17°9512.211.46.4
May22° / 14°11310.810.76.6
Jun21° / 12°969.610.36.4
Jul20° / 11°899.510.46.4
Aug21° / 12°909.3116.6
Sep22° / 14°15013.511.85.8
Oct23° / 16°14315.512.75.6
Nov25° / 17°14716.613.45.5
Dec27° / 19°16718.913.75.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45149
55149
65149
75050
85050
94951
104951
114951
124852
134753
144852
154852
164852
174753
184753
194753
204753
214753
224852
234852
244753
254951
264951
274951
285050
294951
305050
315050

Chance of precipitation in May

Any precipitation

Biguaçu gets around 113 mm of rain over 10.8 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 35% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
133
233
333
433
533
633
733
833
934
1034
1135
1235
1335
1436
1536
1637
1737
1837
1938
2037
2137
2237
2337
2436
2536
2635
2735
2834
2934
3033
3133

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1162736192
2172836182
3182935171
4192935161
5193035151
6203135141
7213235130
8213234120
9223234110
10233334100
11233333100
1224333390
1325333390
1425333390
1526333290
1626333290
1727333280
1828333180
1929323180
2030323080
2131313080
2233303070
2334302970
2436292960
2537292860
2638292760
2740282750
2841282650
2942282640
3043282640
3143282630

Wind in May

Winds average 7 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
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 hours at the start of May to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over May. Sunrise moves from 7:43 AM to 8:00 AM, and sunset from 6:41 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.07:436:41
210.97:436:40
310.97:446:39
410.97:446:38
510.97:456:38
610.97:466:37
710.87:466:36
810.87:476:35
910.87:476:35
1010.87:486:34
1110.77:496:33
1210.77:496:33
1310.77:506:32
1410.77:506:31
1510.77:516:31
1610.67:526:30
1710.67:526:30
1810.67:536:29
1910.67:536:29
2010.67:546:28
2110.67:546:28
2210.57:556:27
2310.57:566:27
2410.57:566:26
2510.57:576:26
2610.57:576:26
2710.57:586:25
2810.47:586:25
2910.47:596:25
3010.47:596:24
3110.48:006:24

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3 kWh/m².

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 5.61 kWh/m² in December across the year — May's 3 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.4Moderate
43.3Moderate
53.3Moderate
63.3Moderate
73.3Moderate
83.2Moderate
93.2Moderate
103.2Moderate
113.1Moderate
123.1Moderate
133.1Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
182.9Moderate
192.9Moderate
202.9Moderate
212.9Moderate
222.9Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in May

Is May a good time to visit Biguaçu?

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

6.6
Sightseeing
1st-best month of the year
4.7
Beach & pool
7th-best month of the year

May is a reasonable time to visit Biguaçu for sightseeing.

What to pack for Biguaçu in May

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

In May, Biguaçu sees daytime highs around 22°C and nights near 14°C. Worth packing: light clothes and rain gear. About 11 days see rain.

light clothesrain gear

Sea temperature near Biguaçu in May

The nearest coast averages about 22°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 31 km away) is warmest in February at about 26°C and coldest in August near 18°C.

It's comfortable for a long swim from Oct 6 to Jun 10 — about 8.2 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar25Warm
Apr24Warm
May22Refreshing
Jun20Cool
Jul18Cool
Aug18Cool
Sep19Cool
Oct21Refreshing
Nov23Refreshing
Dec24Warm

UV index in Biguaçu in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Biguaçu peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 18UV 14Jul 11UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5High
Jun5Moderate
Jul5Moderate
Aug6High
Sep8Very high
Oct9Very high
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Biguaçu?

Biguaçu sits at 27.5°S, 48.7°W, 6 m above sea level, in Brazil. The nearest listed city is Campinas, 12 km away.

Topography around Biguaçu

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

Within 3 km, the terrain around Biguaçu has significant variations in elevation — a maximum elevation change of 394 m around an average of 48 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 595 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,813 m.

The land around Biguaçu is covered by trees (37%), artificial surfaces (21%) and water (21%) within 3 km, trees (47%) and water (26%) within 16 km, and trees (52%) and water (35%) within 80 km.

3 km
394 m
16 km
595 m
80 km
1,813 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
May weather nearby: Campinas 12 km · São José 14 km · Florianopolis 15 km · Trindade 17 km · Palhoça 17 km · Pantanal 19 km · Governador Celso Ramos 22 km · Santo Amaro da Imperatriz 25 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 Biguaçu (-27.4942°, -48.6556°, elevation 6 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).