Ribeirão da Ilha weather in May

In May, Ribeirão da Ilha sees average daytime highs of 22°C and overnight lows near 18°C, with 117 mm of rain across 10.4 wet days and about 10.6 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 20°C by the end. The sky is clear or mostly clear about 40% 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 Ribeirão da Ilha's 2nd-clearest and 8th-windiest month. For the whole year in context, see Ribeirão da Ilha's year-round climate.

Daytime high
22°
7th warmest
Overnight low
18°
5th coldest
Rainfall
117 mm
10.4 wet days
Daylight
10 h 36 min
7:51 AM – 6:29 PM
Cloud cover
55%
2nd clearest
Wind
13 km/h
8th windiest
Solar energy
3.06 kWh/m²
Travel score
6.6
out of 10

Ribeirão da Ilha is city district of Florianópolis, 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 23°C in the first days to 20°C by the end.

A typical May day in Ribeirão da Ilha reaches about 22°C in the afternoon and slips back to 18°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 24°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)
12319
22319
32319
42319
52319
62219
72219
82219
92219
102219
112218
122218
132218
142218
152218
162118
172118
182118
192118
202118
212118
222118
232118
242117
252117
262117
272117
282117
292117
302017
312017

Ribeirão da Ilha 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
Jan26° / 23°17518.613.65.3
Feb27° / 23°15217135.2
Mar26° / 23°12616.812.25.7
Apr24° / 21°8811.111.46.8
May22° / 18°11710.410.66.6
Jun20° / 16°979.110.36.4
Jul19° / 15°858.910.46.3
Aug19° / 15°888.9116.4
Sep20° / 17°13512.211.85.8
Oct21° / 19°12813.412.75.8
Nov23° / 20°12513.513.46.2
Dec25° / 22°12614.313.76.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55644
65644
75545
85446
95446
105446
115446
125545
135545
145545
155446
165545
175545
185545
195545
205545
215644
225644
235644
245644
255644
265644
275644
285743
295743
305743
315743

Chance of precipitation in May

Any precipitation

Ribeirão da Ilha gets around 117 mm of rain over 10.4 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 34% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
232
332
432
532
632
733
833
933
1033
1134
1234
1334
1435
1535
1635
1736
1836
1936
2036
2135
2235
2335
2434
2534
2633
2733
2832
2932
3032
3131

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 28% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
171930349
272030348
382130347
482231336
582331336
682331325
782432324
882432314
992533313
1092533303
11102534302
12102534292
13112534292
14112534281
15122435281
16122435271
17132435271
18142435261
19152435251
20162335251
21172335241
22182435231
23192435220
24202435210
25212435200
26222534190
27232534180
28232634170
29242633160
30252733150
31252733150

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

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 6:40 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.07:436:40
210.97:436:39
310.97:446:38
410.97:446:38
510.97:456:37
610.87:456:36
710.87:466:35
810.87:476:35
910.87:476:34
1010.87:486:33
1110.77:486:32
1210.77:496:32
1310.77:506:31
1410.77:506:31
1510.77:516:30
1610.67:516:29
1710.67:526:29
1810.67:536:28
1910.67:536:28
2010.67:546:27
2110.57:546:27
2210.57:556:26
2310.57:556:26
2410.57:566:26
2510.57:576:25
2610.57:576:25
2710.47:586:24
2810.47:586:24
2910.47:596:24
3010.47:596:24
3110.48:006:23

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.06 kWh/m².

For context, solar energy here swings from a low near 2.65 kWh/m² to a high of 5.95 kWh/m² in December across the year — May's 3.06 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.4Moderate
43.4Moderate
53.4Moderate
63.3Moderate
73.3Moderate
83.3Moderate
93.3Moderate
103.2Moderate
113.2Moderate
123.1Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.0Moderate
202.9Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in May

Is May a good time to visit Ribeirão da Ilha?

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

6.6
Sightseeing
2nd-best month of the year
4.4
Beach & pool
7th-best month of the year

May is a reasonable time to visit Ribeirão da Ilha for sightseeing.

What to pack for Ribeirão da Ilha in May

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

In May, Ribeirão da Ilha sees daytime highs around 22°C and nights near 18°C. Worth packing: rain gear. About 10 days see rain.

rain gear

Sea temperature near Ribeirão da Ilha 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 18 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 8 to Jun 8 — about 8 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar25Warm
Apr24Refreshing
May22Refreshing
Jun20Cool
Jul18Cool
Aug18Cool
Sep19Cool
Oct21Refreshing
Nov22Refreshing
Dec24Warm

UV index in Ribeirão da Ilha 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 Ribeirão da Ilha peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 19UV 14Jul 11UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5High
Jun5Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct9Very high
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Ribeirão da Ilha?

Ribeirão da Ilha sits at 27.7°S, 48.5°W, 2 m above sea level, in Brazil. The nearest listed city is Freguesia do Ribeirao da Ilha, 4.0 km away.

Topography around Ribeirão da Ilha

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

Within 3 km, the terrain around Ribeirão da Ilha has significant variations in elevation — a maximum elevation change of 529 m around an average of 57 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,038 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,783 m.

The land around Ribeirão da Ilha is covered by trees (52%) and grassland (22%) within 3 km, water (59%) and trees (24%) within 16 km, and trees (48%) and water (41%) within 80 km.

3 km
529 m
16 km
1,038 m
80 km
1,783 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
May weather nearby: Freguesia do Ribeirao da Ilha 4.0 km · Pantanal 10 km · Florianopolis 12 km · Trindade 13 km · São José 13 km · Campinas 14 km · Palhoça 15 km · Santo Amaro da Imperatriz 24 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 Ribeirão da Ilha (-27.6993°, -48.5322°, elevation 2 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).