Silva Jardim weather in December

In December, Silva Jardim sees average daytime highs of 29°C and overnight lows near 23°C, with 243 mm of rain across 19.8 wet days and about 13.4 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 18% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 13 h 18 min at the start of December to 13 h 24 min by month's end. Set against the rest of the year, December is Silva Jardim's 11th-clearest and 6th-windiest month. For the whole year in context, see Silva Jardim's year-round climate.

Daytime high
29°
4th warmest
Overnight low
23°
9th coldest
Rainfall
243 mm
19.8 wet days
Daylight
13 h 24 min
6:04 AM – 7:27 PM
Cloud cover
71%
11th clearest
Wind
8 km/h
6th windiest
Solar energy
5.9 kWh/m²
Travel score
4.4
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in Silva Jardim reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62822
72822
82822
92822
102822
112823
122823
132823
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923
312923

How December really feels in Silva Jardim

Once humidity and wind are folded in, December averages 14 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
14
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Silva Jardim weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°23718.713.24.0
Feb30° / 23°17314.912.84.2
Mar29° / 23°21120.112.24.2
Apr28° / 21°11014.311.55.7
May26° / 19°8311.710.96.6
Jun25° / 18°467.210.67.5
Jul25° / 18°447.610.87.6
Aug25° / 18°447.911.27.5
Sep26° / 19°8110.711.96.7
Oct26° / 20°10812.512.56.1
Nov27° / 21°2051813.15.1
Dec29° / 23°24319.813.44.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
22971
32971
42872
52872
62872
72872
82872
92872
102971
113070
123070
133070
143268
153268
163268
173466
183466
193565
203565
213664
223664
233763
243664
253664
263664
273466
283367
293367
303367
313268

Chance of precipitation in December

Any precipitation

Silva Jardim gets around 243 mm of rain over 19.8 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 64% and peaks near 68% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
160
261
361
461
561
661
762
862
962
1062
1162
1262
1362
1463
1563
1663
1763
1864
1964
2064
2165
2265
2365
2466
2566
2667
2768
2868
2968
3068
3167

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 64% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1832555
2831556
3730576
4730567
5629587
6628588
7528598
8527608
9426619
10425629
113246310
123236410
132226511
142216512
152206612
162196613
171186813
181176814
191166815
201156915
211146916
221136917
231126918
241117018
251116919
261106920
271106821
281106722
291106722
301106623
311106623

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 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
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 18 min at the start of December to 13 h 24 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 6:01 AM to 6:12 AM, and sunset from 7:18 PM to 7:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:017:18
213.36:017:19
313.36:017:19
413.36:017:20
513.36:017:21
613.36:017:21
713.36:027:22
813.36:027:22
913.46:027:23
1013.46:027:24
1113.46:037:24
1213.46:037:25
1313.46:037:25
1413.46:047:26
1513.46:047:27
1613.46:047:27
1713.46:057:28
1813.46:057:28
1913.46:057:29
2013.46:067:29
2113.46:067:30
2213.46:077:30
2313.46:077:31
2413.46:087:31
2513.46:087:32
2613.46:097:32
2713.46:097:32
2813.46:107:33
2913.46:107:33
3013.46:117:34
3113.46:127:34

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.9 kWh/m².

For context, solar energy here swings from a low near 3.47 kWh/m² to a high of 6.16 kWh/m² in February across the year — December's 5.9 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
276.0Bright
286.0Bright
296.0Bright
306.0Bright
316.0Bright
Planning a trip in December

Hazard calendar for Silva Jardim

In seasonPeak

In December, Silva Jardim sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Silva Jardim's rainy season runs November–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Silva Jardim?

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

4.4
Sightseeing
9th-best month of the year
5.3
Beach & pool
11th-best month of the year

December is a reasonable time to visit Silva Jardim for sightseeing.

What to pack for Silva Jardim in December

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

In December, Silva Jardim sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Silva Jardim 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 53 km away) is warmest in March at about 26°C and coldest in September near 22°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar26Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug22Refreshing
Sep22Refreshing
Oct22Refreshing
Nov23Refreshing
Dec24Warm

UV index in Silva Jardim in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Silva Jardim peaks around January 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 14UV 14Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5Moderate
Aug8Very high
Sep7High
Oct12Extreme
Nov13Extreme
Dec14Extreme

Air quality in Silva Jardim 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 Silva Jardim is worst in September — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (March, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1518 µg/m³Mar 1110 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr12Good
May15Moderate
Jun16Moderate
Jul15Moderate
Aug15Moderate
Sep19Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Silva Jardim?

Silva Jardim sits at 22.7°S, 42.4°W, 19 m above sea level, in Brazil. The nearest listed city is Rio Bonito, 23 km away.

Topography around Silva Jardim

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

Within 3 km, the terrain around Silva Jardim has only modest variations in elevation — a maximum elevation change of 150 m around an average of 31 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 580 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Silva Jardim is covered by grassland (62%) and trees (31%) within 3 km, grassland (54%) and trees (39%) within 16 km, and trees (38%), water (35%) and grassland (23%) within 80 km.

3 km
150 m
16 km
580 m
80 km
2,252 m
treesgrasslandartificial surfaceswaterwetland
December weather nearby: Rio Bonito 23 km · Araruama 25 km · Iguaba Grande 27 km · Casimiro de Abreu 27 km · Saquarema 29 km · Cachoeiras de Macacu 34 km · Tanguá 34 km · São Pedro da Aldeia 36 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 Silva Jardim (-22.6508°, -42.3917°, elevation 19 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).