Cidreira weather in December

In December, Cidreira sees average daytime highs of 26°C and overnight lows near 21°C, with 101 mm of rain across 10 wet days and about 13.9 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 25°C in the first days to 26°C by the end. The sky is clear or mostly clear about 35% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 48 min at the start of December to 13 h 54 min by month's end. Set against the rest of the year, December is Cidreira's 4th-clearest and 4th-windiest month. For the whole year in context, see Cidreira's year-round climate.

Daytime high
26°
4th warmest
Overnight low
21°
9th coldest
Rainfall
101 mm
10 wet days
Daylight
13 h 54 min
6:19 AM – 8:15 PM
Cloud cover
56%
4th clearest
Wind
19 km/h
4th windiest
Solar energy
6.88 kWh/m²
Travel score
6.8
out of 10

Cidreira is chief city of Cidreira Municipality, Rio Grande do Sul, 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 25°C in the first days to 26°C by the end.

A typical December day in Cidreira reaches about 26°C in the afternoon and slips back to 21°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 29°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)
12520
22520
32520
42520
52520
62520
72520
82520
92520
102520
112520
122520
132520
142621
152621
162621
172621
182621
192621
202621
212621
222621
232621
242621
252621
262622
272622
282622
292622
302722
312722

Cidreira weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 22°10111.513.76.3
Feb27° / 22°9211.613.16.1
Mar26° / 22°10410.912.26.6
Apr24° / 19°859.211.37.0
May21° / 16°1089.210.56.6
Jun19° / 14°1069.410.16.1
Jul18° / 13°12510.110.35.9
Aug19° / 14°1169.910.96.2
Sep20° / 15°13710.911.86.0
Oct22° / 17°14412.112.76.2
Nov24° / 19°1039.713.57.0
Dec26° / 21°1011013.96.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% 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 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45347
55446
65446
75446
85347
95347
105347
115347
125347
135347
145347
155347
165149
175149
185149
195149
205149
215149
225149
235149
245149
255149
265149
275149
285149
295149
305248
315248

Chance of precipitation in December

Any precipitation

Cidreira gets around 101 mm of rain over 10 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 33% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
132
232
332
432
532
632
732
832
933
1033
1133
1234
1334
1434
1534
1634
1734
1834
1934
2034
2134
2234
2333
2433
2533
2633
2733
2833
2933
3033
3133

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 37% of days. Sticky, muggy-or-worse air turns up on roughly 61% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1618304060
2617304070
3617304080
4616294080
5616294090
66152940100
76142940110
86142939120
96132839130
106122839150
115122839160
125122739170
135112739180
144112639190
154112539210
164112539220
174112438240
183102338250
193102337270
203102236290
212102136300
222102135320
23292035331
24292034341
25291934361
26281934371
27181833381
28181833391
29181833392
30171832402
31171732412

Wind in December

Winds average 19 km/h in December.

Across December, daily wind ranges from about 19 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120light breeze
220light breeze
320light breeze
420light breeze
520light breeze
620light breeze
720light breeze
820light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1420light breeze
1520light breeze
1620light breeze
1720light breeze
1820light breeze
1920light breeze
2020light breeze
2120light breeze
2220light breeze
2320light breeze
2420light breeze
2520light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 48 min at the start of December to 13 h 54 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 6:16 AM to 6:26 AM, and sunset from 8:05 PM to 8:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.86:168:05
213.86:168:05
313.86:168:06
413.86:168:07
513.96:178:08
613.96:178:08
713.96:178:09
813.96:178:10
913.96:178:11
1013.96:178:11
1113.96:178:12
1213.96:188:13
1313.96:188:13
1413.96:188:14
1513.96:198:14
1613.96:198:15
1713.96:198:16
1813.96:208:16
1913.96:208:17
2013.96:208:17
2113.96:218:18
2213.96:218:18
2313.96:228:19
2413.96:228:19
2513.96:238:20
2613.96:238:20
2713.96:248:20
2813.96:258:21
2913.96:258:21
3013.96:268:21
3113.96:268:22

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.88 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.53 kWh/m² to a high of 6.88 kWh/m² in December across the year — December's 6.88 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.9Intense
86.9Intense
96.9Intense
106.9Intense
116.9Intense
126.9Intense
136.9Intense
146.9Intense
156.9Intense
166.9Intense
176.9Intense
186.9Intense
196.9Intense
206.9Intense
216.9Intense
226.9Intense
236.9Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.8Intense
306.8Intense
316.8Intense
Planning a trip in December

Is December a good time to visit Cidreira?

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

6.8
Sightseeing
3rd-best month of the year
6.3
Beach & pool
3rd-best month of the year

December is a reasonable time to visit Cidreira for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Cidreira in December

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

In December, Cidreira sees daytime highs around 26°C and nights near 21°C. Pack sun protection. Worth having: light clothes and rain gear. About 10 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Cidreira 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 offshore is warmest in February at about 25°C and coldest in August near 16°C.

It's comfortable for a long swim from Nov 9 to May 19 — about 6.3 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan24Warm
Feb25Warm
Mar24Warm
Apr23Refreshing
May20Refreshing
Jun18Cool
Jul16Cool
Aug16Cool
Sep17Cool
Oct19Cool
Nov20Refreshing
Dec23Refreshing

UV index in Cidreira 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 Cidreira peaks around January 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 17UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Very high
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct9Very high
Nov11Extreme
Dec12Extreme

Air quality in Cidreira 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 Cidreira is worst in August — around 15 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (February, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1815 µg/m³Feb 207 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb7Good
Mar7Good
Apr8Good
May8Good
Jun8Good
Jul11Good
Aug15Moderate
Sep12Good
Oct9Good
Nov8Good
Dec8Good
Location & terrain

Where is Cidreira?

Cidreira sits at 30.2°S, 50.2°W, 5 m above sea level, in Brazil. The nearest listed city is Tramandaí, 23 km away.

Topography around Cidreira

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

Within 3 km, the terrain around Cidreira has only modest variations in elevation — a maximum elevation change of 17 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 56 m; within 80 km, large variations in elevation — a maximum elevation change of 987 m.

The land around Cidreira is covered by water (46%) within 3 km, water (56%) within 16 km, and water (45%) within 80 km.

3 km
17 m
16 km
56 m
80 km
987 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Tramandaí 23 km · Imbé 24 km · Osório 33 km · Xangri-lá 45 km · Santo Antônio da Patrulha 50 km · Capão da Canoa 52 km · Rolante 69 km · Viamão 79 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 Cidreira (-30.1811°, -50.2056°, elevation 5 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).