Campo Bom weather in December

In December, Campo Bom sees average daytime highs of 29°C and overnight lows near 18°C, with 141 mm of rain across 13.6 wet days and about 13.9 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 29°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 Campo Bom's 3rd-clearest and 4th-windiest month. For the whole year in context, see Campo Bom's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
141 mm
13.6 wet days
Daylight
13 h 54 min
6:24 AM – 8:17 PM
Cloud cover
57%
3rd clearest
Wind
9 km/h
4th windiest
Solar energy
6.48 kWh/m²
Travel score
5.3
out of 10

Campo Bom is human settlement in 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 28°C in the first days to 29°C by the end.

A typical December day in Campo Bom reaches about 29°C in the afternoon and slips back to 18°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 33°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12817
22817
32817
42818
52818
62818
72818
82818
92818
102818
112818
122818
132818
142918
152918
162918
172919
182919
192919
202919
212919
222919
232919
242919
252919
262919
272919
282919
292919
302919
312920

Campo Bom weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°16415.513.74.7
Feb29° / 20°13914.713.14.8
Mar28° / 18°13213.512.25.8
Apr25° / 16°10910.311.36.8
May21° / 13°11710.110.56.6
Jun20° / 11°11710.410.16.1
Jul19° / 10°14510.610.36.1
Aug21° / 11°12610.510.96.5
Sep22° / 13°1531211.86.3
Oct24° / 15°1841412.76.2
Nov26° / 16°13212.313.56.2
Dec29° / 18°14113.613.95.3

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 17% of December, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35248
45248
55149
65149
75149
85149
95149
105248
115248
125248
135248
145248
155248
165248
175347
185347
195347
205347
215347
225347
235248
245248
255248
265248
275248
285149
295149
305248
315248

Chance of precipitation in December

Any precipitation

Campo Bom gets around 141 mm of rain over 13.6 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 44% and peaks near 45% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
144
244
343
443
543
643
743
843
943
1044
1144
1244
1344
1444
1544
1645
1745
1845
1945
2044
2144
2244
2344
2444
2544
2644
2744
2844
2944
3044
3144

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 38% of days. Sticky, muggy-or-worse air turns up on roughly 58% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
182031348
281931348
371931358
471830359
571830369
6717303710
7716303710
8616293811
9615293812
10614293812
11514293913
12513283914
13513284015
14412274016
15412264117
16411264118
17311254119
18311244121
19310244122
20310234023
21310234025
2229233926
2329223928
2429223829
2528213830
2628213831
2728213732
2818213733
2917203734
3017203734
3117203735

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:21 AM to 6:31 AM, and sunset from 8:07 PM to 8:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.86:218:07
213.86:218:08
313.86:218:09
413.86:218:09
513.86:218:10
613.86:218:11
713.86:218:11
813.86:218:12
913.96:228:13
1013.96:228:13
1113.96:228:14
1213.96:228:15
1313.96:238:15
1413.96:238:16
1513.96:238:17
1613.96:248:17
1713.96:248:18
1813.96:248:18
1913.96:258:19
2013.96:258:19
2113.96:268:20
2213.96:268:20
2313.96:268:21
2413.96:278:21
2513.96:278:22
2613.96:288:22
2713.96:298:23
2813.96:298:23
2913.96:308:23
3013.96:308:24
3113.96:318:24

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.48 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 6.48 kWh/m² in December across the year — December's 6.48 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.4Intense
276.4Intense
286.4Intense
296.4Intense
306.4Intense
316.4Intense
Planning a trip in December

Is December a good time to visit Campo Bom?

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

5.3
Sightseeing
10th-best month of the year
6.4
Beach & pool
1st-best month of the year

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

What to pack for Campo Bom in December

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

In December, Campo Bom sees daytime highs around 29°C and nights near 18°C. Pack light clothes and sun protection. Worth having: rain gear. About 14 days see rain.

light clothessun protectionrain gear

UV index in Campo Bom in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Campo Bom peaks around January 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 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 16UV 13Jun 20UV 4
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Very high
Apr8Very high
May5Moderate
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct8Very high
Nov12Extreme
Dec13Extreme

Air quality in Campo Bom 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 Campo Bom is worst in August — around 27 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateAug 1327 µg/m³Dec 2213 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar15Moderate
Apr18Moderate
May21Moderate
Jun23Moderate
Jul25Moderate
Aug27Moderate
Sep23Moderate
Oct16Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Campo Bom?

Campo Bom sits at 29.7°S, 51.1°W, 20 m above sea level, in Brazil. The nearest listed city is Sapiranga, 6.0 km away.

Topography around Campo Bom

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

Within 3 km, the terrain around Campo Bom has only modest variations in elevation — a maximum elevation change of 103 m around an average of 34 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 771 m; within 80 km, large variations in elevation — a maximum elevation change of 1,028 m.

The land around Campo Bom is covered by artificial surfaces (40%), trees (36%) and grassland (20%) within 3 km, trees (59%) and grassland (22%) within 16 km, and trees (55%) and grassland (24%) within 80 km.

3 km
103 m
16 km
771 m
80 km
1,028 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Sapiranga 6.0 km · Novo Hamburgo 7.0 km · Dois Irmãos 11 km · Estância Velha 12 km · São Leopoldo 13 km · Ivoti 14 km · Sapucaia do Sul 18 km · Nova Hartz 18 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 Campo Bom (-29.6789°, -51.0533°, elevation 20 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. 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).