Rio Preto da Eva weather in December

In December, Rio Preto da Eva sees average daytime highs of 31°C and overnight lows near 23°C, with 234 mm of rain across 27.6 wet days and about 12.2 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 3% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of December to 12 h 12 min by month's end. Set against the rest of the year, December is Rio Preto da Eva's 7th-clearest and 10th-windiest month. For the whole year in context, see Rio Preto da Eva's year-round climate.

Daytime high
31°
6th warmest
Overnight low
23°
9th coldest
Rainfall
234 mm
27.6 wet days
Daylight
12 h 12 min
5:50 AM – 6:00 PM
Cloud cover
86%
7th clearest
Wind
5 km/h
10th windiest
Solar energy
4.41 kWh/m²
Travel score
2.6
out of 10

Rio Preto da Eva is 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

Day-to-day highs hold fairly steady near 31°C through the month.

A typical December day in Rio Preto da Eva reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33224
43223
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How December really feels in Rio Preto da Eva

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 Preto da Eva weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°25327.312.12.8
Feb30° / 23°2472512.12.9
Mar30° / 23°33428.9122.7
Apr30° / 23°33028.811.92.7
May30° / 23°27529.111.92.7
Jun30° / 23°14223.511.83.2
Jul31° / 22°9519.311.93.6
Aug32° / 23°8416.611.93.3
Sep33° / 23°9618.3122.8
Oct33° / 24°1322012.12.7
Nov32° / 24°16622.512.12.6
Dec31° / 23°23427.612.22.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 7% of December, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11684
21585
31486
41486
51486
61387
71387
81288
91288
101288
111189
121189
131189
141090
15991
16991
17991
18991
19892
20793
21793
22793
23793
24793
25793
26793
27793
28793
29793
30793
31793

Chance of precipitation in December

Any precipitation

Rio Preto da Eva gets around 234 mm of rain over 27.6 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 89% and peaks near 94% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
178
278
379
480
580
681
782
883
984
1086
1187
1288
1389
1490
1591
1692
1792
1893
1993
2094
2194
2294
2394
2494
2594
2693
2793
2893
2993
3092
3192

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 73% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
126434
216534
316534
416633
516633
616732
716732
816831
906931
1007030
1107129
1207129
1307228
1407228
1507327
1607426
1707525
1807525
1907624
2007624
2107723
2207822
2307822
2407921
2507921
2608020
2708020
2808119
2908119
3008218
3108218

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 06 min at the start of December to 12 h 12 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 5:44 AM to 5:57 AM, and sunset from 5:53 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:445:53
212.15:455:53
312.15:455:54
412.15:455:54
512.15:465:55
612.15:465:55
712.25:465:55
812.25:475:56
912.25:475:56
1012.25:485:57
1112.25:485:57
1212.25:495:58
1312.25:495:58
1412.25:495:59
1512.25:505:59
1612.25:506:00
1712.25:516:00
1812.25:516:01
1912.25:526:01
2012.25:526:02
2112.25:536:02
2212.25:536:02
2312.25:546:03
2412.25:546:03
2512.25:556:04
2612.25:556:04
2712.25:556:05
2812.25:566:05
2912.25:566:06
3012.25:576:06
3112.25:576:07

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.41 kWh/m².

For context, solar energy here swings from a low near 3.82 kWh/m² to a high of 5.43 kWh/m² in September across the year — December's 4.41 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.7Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.6Bright
114.5Bright
124.5Bright
134.5Bright
144.4Bright
154.4Bright
164.4Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
314.1Bright
Planning a trip in December

Is December a good time to visit Rio Preto da Eva?

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

2.6
Sightseeing
11th-best month of the year
3.9
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Rio Preto da Eva.

What to pack for Rio Preto da Eva in December

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

In December, Rio Preto da Eva sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

UV index in Rio Preto da Eva 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 Rio Preto da Eva peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 13 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeMar 12UV 15Nov 13UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep11Extreme
Oct10Extreme
Nov10Very high
Dec12Extreme

Air quality in Rio Preto da Eva 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 Rio Preto da Eva is worst in October — around 29 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (June, 12 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1129 µg/m³Jun 1412 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb16Moderate
Mar16Moderate
Apr15Moderate
May12Good
Jun12Good
Jul12Moderate
Aug20Moderate
Sep28Moderate
Oct29Moderate
Nov24Moderate
Dec18Moderate
Location & terrain

Where is Rio Preto da Eva?

Rio Preto da Eva sits at 2.7°S, 59.7°W, 39 m above sea level, in Brazil. The nearest listed city is Careiro da Várzea, 57 km away.

Topography around Rio Preto da Eva

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

Within 3 km, the terrain around Rio Preto da Eva has only modest variations in elevation — a maximum elevation change of 93 m around an average of 58 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 148 m; within 80 km, only modest variations in elevation — a maximum elevation change of 208 m.

The land around Rio Preto da Eva is covered by trees (79%) within 3 km, trees (96%) within 16 km, and trees (88%) within 80 km.

3 km
93 m
16 km
148 m
80 km
208 m
treesgrasslandartificial surfaceswaterwetland
December weather nearby: Careiro da Várzea 57 km · Manaus 57 km · Presidente Figueiredo 82 km · Iranduba 85 km · Autazes 117 km · Manaquiri 117 km · Manacapuru 122 km · Novo Airão 138 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 Preto da Eva (-2.698°, -59.7017°, elevation 39 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).