Orleans weather in December

In December, Orleans sees average daytime highs of 27°C and overnight lows near 18°C, with 226 mm of rain across 19.6 wet days and about 13.8 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 17% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 42 min at the start of December to 13 h 48 min by month's end. Set against the rest of the year, December is Orleans's 9th-clearest and 5th-windiest month. For the whole year in context, see Orleans's year-round climate.

Daytime high
27°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
226 mm
19.6 wet days
Daylight
13 h 48 min
6:20 AM – 8:07 PM
Cloud cover
68%
9th clearest
Wind
6 km/h
5th windiest
Solar energy
5.97 kWh/m²
Travel score
5.0
out of 10

Orleans is central town of Orleans Municipality, Santa Catarina, Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical December day in Orleans reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 32°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12617
22617
32617
42617
52617
62617
72617
82617
92717
102717
112718
122718
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232718
242718
252718
262719
272719
282719
292719
302719
312719

Orleans weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 19°31422.913.64.5
Feb27° / 19°27821.5134.4
Mar26° / 18°19920.612.25.0
Apr24° / 15°12013.211.36.3
May21° / 12°13311.510.66.4
Jun20° / 11°989.910.26.4
Jul20° / 10°8710.110.46.4
Aug21° / 11°9810116.7
Sep22° / 13°14113.911.85.9
Oct23° / 15°16617.712.75.5
Nov25° / 16°19217.413.45.5
Dec27° / 18°22619.613.85.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% 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 64%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34060
44060
54060
64060
74060
83961
93961
103961
113862
123862
133862
143763
153664
163565
173565
183466
193367
203367
213367
223367
233367
243268
253169
263169
273169
283169
293169
303169
313169

Chance of precipitation in December

Any precipitation

Orleans gets around 226 mm of rain over 19.6 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 63% and peaks near 69% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
159
259
359
459
559
659
759
860
960
1061
1161
1262
1362
1463
1563
1663
1764
1864
1965
2065
2165
2266
2366
2466
2567
2667
2768
2868
2968
3069
3169

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 40% of days. Sticky, muggy-or-worse air turns up on roughly 46% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
182339281
282339282
382239292
482239302
572139302
672139312
772039322
871939332
961938342
1061838352
1161738363
1251738373
1351637393
1451537403
1541536414
1641535424
1741434435
1831433446
1931432456
2031332457
2121331458
2221331469
23212304610
24212294611
25112294612
26112284712
27112284713
28111274714
29111274714
30111274715
31110274715

Wind in December

Winds average 6 km/h in December.

Across December, 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
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 42 min at the start of December to 13 h 48 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 6:17 AM to 6:27 AM, and sunset from 7:57 PM to 8:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.76:177:57
213.76:177:58
313.76:177:59
413.76:177:59
513.76:178:00
613.76:178:01
713.76:178:01
813.76:178:02
913.86:188:03
1013.86:188:03
1113.86:188:04
1213.86:188:05
1313.86:198:05
1413.86:198:06
1513.86:198:07
1613.86:208:07
1713.86:208:08
1813.86:208:08
1913.86:218:09
2013.86:218:09
2113.86:228:10
2213.86:228:10
2313.86:228:11
2413.86:238:11
2513.86:238:12
2613.86:248:12
2713.86:258:12
2813.86:258:13
2913.86:268:13
3013.86:268:13
3113.86:278:14

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.97 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.71 kWh/m² to a high of 5.97 kWh/m² in December across the year — December's 5.97 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Bright
76.0Bright
86.0Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
136.0Bright
146.0Bright
156.0Bright
166.0Bright
176.0Bright
186.0Bright
196.0Bright
206.0Bright
216.0Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.8Bright
315.8Bright
Planning a trip in December

Is December a good time to visit Orleans?

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

5.0
Sightseeing
9th-best month of the year
5.1
Beach & pool
2nd-best month of the year

December is a reasonable time to visit Orleans for sightseeing.

What to pack for Orleans in December

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

In December, Orleans sees daytime highs around 27°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 20 days see rain.

rain gearlight clothessun protection

Sea temperature near Orleans in December

The nearest coast averages about 23°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 50 km away) is warmest in February at about 25°C and coldest in August near 17°C.

It's comfortable for a long swim from Oct 23 to Jun 1 — about 7.3 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar25Warm
Apr24Refreshing
May21Refreshing
Jun19Cool
Jul17Cool
Aug17Cool
Sep18Cool
Oct20Cool
Nov21Refreshing
Dec23Refreshing

UV index in Orleans 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 Orleans peaks around January 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 24UV 13Jun 22UV 4
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar10Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct10Very high
Nov12Extreme
Dec12Extreme

Air quality in Orleans in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Orleans is worst in August — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (March, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1916 µg/m³Mar 137 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar7Good
Apr8Good
May8Good
Jun8Good
Jul10Good
Aug16Moderate
Sep13Moderate
Oct10Good
Nov8Good
Dec8Good
Location & terrain

Where is Orleans?

Orleans sits at 28.4°S, 49.3°W, 131 m above sea level, in Brazil. The nearest listed city is Braço do Norte, 15 km away.

Topography around Orleans

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

Within 3 km, the terrain around Orleans has only modest variations in elevation — a maximum elevation change of 249 m around an average of 171 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 557 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,812 m.

The land around Orleans is covered by trees (60%) and grassland (25%) within 3 km, trees (66%) and grassland (26%) within 16 km, and trees (49%), grassland (22%) and water (21%) within 80 km.

3 km
249 m
16 km
557 m
80 km
1,812 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Braço do Norte 15 km · Urussanga 18 km · Cocal do Sul 27 km · Tubarão 30 km · Morro da Fumaça 33 km · Capivari de Baixo 34 km · Criciúma 36 km · Jaguaruna 39 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 Orleans (-28.3589°, -49.2914°, elevation 131 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. 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).