Rio Bananal weather in December

In December, Rio Bananal sees average daytime highs of 30°C and overnight lows near 22°C, with 190 mm of rain across 16.9 wet days and about 13.1 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 12% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 13 h 06 min at the start of December to 13 h 06 min by month's end. Set against the rest of the year, December is Rio Bananal's 11th-clearest and 4th-windiest month. For the whole year in context, see Rio Bananal's year-round climate.

Daytime high
30°
4th warmest
Overnight low
22°
9th coldest
Rainfall
190 mm
16.9 wet days
Daylight
13 h 12 min
6:03 AM – 7:12 PM
Cloud cover
76%
11th clearest
Wind
9 km/h
4th windiest
Solar energy
5.53 kWh/m²
Travel score
3.9
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Rio Bananal reaches about 30°C in the afternoon and slips back to 22°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°C. Set against its neighbours, December runs about 1°C warmer than November and about 1°C cooler than January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12922
23022
33022
43022
53022
63022
73022
83022
93022
103022
113022
123022
133022
143022
153022
163022
173022
183022
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122
313122

How December really feels in Rio Bananal

Once humidity and wind are folded in, December averages 31 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
31
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.

Rio Bananal 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
Jan31° / 23°13914.8133.9
Feb32° / 23°9013.112.73.7
Mar31° / 22°13716.312.13.8
Apr30° / 21°791311.64.7
May28° / 19°387.811.16.4
Jun27° / 18°246.510.97.1
Jul27° / 17°266.9117.1
Aug27° / 17°206.811.37.0
Sep28° / 19°337.411.96.3
Oct29° / 20°8510.412.45.3
Nov29° / 21°18117.712.94.3
Dec30° / 22°19016.913.13.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 72%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12179
22179
32179
42179
52179
62179
72278
82377
92377
102377
112476
122476
132674
142674
152773
162971
172971
183169
193268
203268
213268
223367
233367
243367
253565
263565
273565
283565
293466
303565
313565

Chance of precipitation in December

Any precipitation

Rio Bananal gets around 190 mm of rain over 16.9 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 55% and peaks near 62% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
162
262
362
461
561
660
760
859
958
1058
1157
1256
1355
1455
1554
1653
1753
1852
1952
2051
2151
2251
2351
2451
2551
2651
2751
2851
2951
3051
3151

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 81% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1229681
2229681
3228691
4227692
5226702
6225712
7124732
8123742
9121762
10120772
11119782
12118792
13117802
14116812
15115822
16114832
17113842
18013852
19012871
20012871
21011881
22011881
23011881
24011881
25011881
26011872
27011872
28011872
29012862
30012853
31012853

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 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
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 06 min at the start of December to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:59 AM to 6:10 AM, and sunset from 7:03 PM to 7:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:597:03
213.15:597:04
313.15:597:05
413.15:597:05
513.15:597:06
613.16:007:06
713.16:007:07
813.16:007:08
913.16:007:08
1013.16:017:09
1113.16:017:09
1213.16:017:10
1313.16:027:11
1413.16:027:11
1513.26:027:12
1613.26:037:12
1713.26:037:13
1813.26:047:13
1913.26:047:14
2013.26:057:14
2113.26:057:15
2213.26:057:15
2313.26:067:16
2413.26:067:16
2513.26:077:17
2613.26:077:17
2713.26:087:17
2813.26:087:18
2913.26:097:18
3013.16:107:19
3113.16:107:19

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.53 kWh/m².

For context, solar energy here swings from a low near 3.47 kWh/m² to a high of 6.03 kWh/m² in February across the year — December's 5.53 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.6Bright
185.6Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.9Bright
315.9Bright
Planning a trip in December

Hazard calendar for Rio Bananal

In seasonPeak

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

Rio Bananal's rainy season runs November–March, 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 Rio Bananal?

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

3.9
Sightseeing
9th-best month of the year
5.5
Beach & pool
12th-best month of the year

December is a weaker month for outdoor sightseeing in Rio Bananal.

What to pack for Rio Bananal in December

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

In December, Rio Bananal sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Rio Bananal in December

The nearest coast averages about 26°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 63 km away) is warmest in March at about 27°C and coldest in August near 23°C.

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

22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr27Warm
May25Warm
Jun24Warm
Jul24Refreshing
Aug23Refreshing
Sep24Refreshing
Oct24Warm
Nov25Warm
Dec26Warm

UV index in Rio Bananal 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 Rio Bananal peaks around February 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 14UV 15Jun 19UV 7
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May7Very high
Jun7High
Jul7High
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Rio Bananal?

Rio Bananal sits at 19.3°S, 40.3°W, 70 m above sea level, in Brazil. The nearest listed city is Sooretama, 26 km away.

Topography around Rio Bananal

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

Within 3 km, the terrain around Rio Bananal has significant variations in elevation — a maximum elevation change of 334 m around an average of 127 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 675 m; within 80 km, large variations in elevation — a maximum elevation change of 1,071 m.

The land around Rio Bananal is covered by trees (48%) and grassland (47%) within 3 km, trees (56%) and grassland (42%) within 16 km, and grassland (46%) and trees (41%) within 80 km.

3 km
334 m
16 km
675 m
80 km
1,071 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Sooretama 26 km · Linhares 31 km · São Gabriel da Palha 35 km · Colatina 44 km · Jaguaré 48 km · Pancas 55 km · Nova Venécia 62 km · Aracruz 62 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 Rio Bananal (-19.265°, -40.3333°, elevation 70 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).