Ribeirão da Ilha weather in December

In December, Ribeirão da Ilha sees average daytime highs of 25°C and overnight lows near 22°C, with 126 mm of rain across 14.3 wet days and about 13.7 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 20% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 36 min at the start of December to 13 h 42 min by month's end. Set against the rest of the year, December is Ribeirão da Ilha's 9th-clearest and 4th-windiest month. For the whole year in context, see Ribeirão da Ilha's year-round climate.

Daytime high
25°
4th warmest
Overnight low
22°
9th coldest
Rainfall
126 mm
14.3 wet days
Daylight
13 h 42 min
6:18 AM – 8:03 PM
Cloud cover
67%
9th clearest
Wind
15 km/h
4th windiest
Solar energy
5.95 kWh/m²
Travel score
6.0
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 December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 26°C by the end.

A typical December day in Ribeirão da Ilha reaches about 25°C in the afternoon and slips back to 22°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 28°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12421
22421
32421
42421
52421
62421
72521
82521
92521
102521
112522
122522
132522
142522
152522
162522
172522
182522
192522
202522
212522
222622
232622
242622
252622
262623
272623
282623
292623
302623
312623

Ribeirão da Ilha weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 6th-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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34258
44258
54258
64159
74159
84060
93961
103961
113961
123961
133763
143862
153862
163664
173664
183664
193763
203763
213763
223763
233862
243664
253664
263763
273763
283763
293763
303763
313763

Chance of precipitation in December

Any precipitation

Ribeirão da Ilha gets around 126 mm of rain over 14.3 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 47% and peaks near 52% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
147
247
346
446
546
646
746
845
945
1045
1145
1245
1345
1446
1546
1646
1747
1847
1947
2047
2147
2248
2348
2448
2549
2649
2750
2851
2951
3052
3152

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 73% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11122742190
21122742190
31112742200
41112641210
51102641220
61102641230
7192640240
8192540250
9182540260
10182439280
11172339291
12172339301
13162239321
14162139331
15162038341
16161938361
17161837372
18151736392
19151735402
20151635413
21051634423
22051533433
23051533444
24041432455
25041431455
26041431466
27041330466
28041330476
29041329477
30041329477
31041229488

Wind in December

Winds average 15 km/h in December.

Across December, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 36 min at the start of December to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 6:15 AM to 6:25 AM, and sunset from 7:53 PM to 8:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:157:53
213.66:157:53
313.66:157:54
413.76:157:55
513.76:157:56
613.76:157:56
713.76:167:57
813.76:167:58
913.76:167:58
1013.76:167:59
1113.76:168:00
1213.76:178:00
1313.76:178:01
1413.76:178:01
1513.76:188:02
1613.76:188:03
1713.76:188:03
1813.76:198:04
1913.86:198:04
2013.86:208:05
2113.86:208:05
2213.86:208:06
2313.86:218:06
2413.86:218:07
2513.86:228:07
2613.76:228:07
2713.76:238:08
2813.76:248:08
2913.76:248:09
3013.76:258:09
3113.76:258:09

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.95 kWh/m² — the sunniest month for solar.

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 — December's 5.95 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.8Bright
Planning a trip in December

Is December a good time to visit Ribeirão da Ilha?

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

6.0
Sightseeing
7th-best month of the year
5.5
Beach & pool
2nd-best month of the year

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

What to pack for Ribeirão da Ilha in December

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

In December, Ribeirão da Ilha sees daytime highs around 25°C and nights near 22°C. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.

rain gearlight clothessun protection

Sea temperature near Ribeirão da Ilha in December

The nearest coast averages about 24°C in December — 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 December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). 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
December 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).