Juína weather in December

In December, Juína sees average daytime highs of 29°C and overnight lows near 22°C, with 291 mm of rain across 28.4 wet days and about 12.7 hours of daylight. It is the 9th-warmest and 2nd-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 3% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of December to 12 h 42 min by month's end. Set against the rest of the year, December is Juína's 9th-clearest and 6th-windiest month. For the whole year in context, see Juína's year-round climate.

Daytime high
29°
9th warmest
Overnight low
22°
11th coldest
Rainfall
291 mm
28.4 wet days
Daylight
12 h 42 min
6:31 AM – 7:11 PM
Cloud cover
85%
9th clearest
Wind
5 km/h
6th windiest
Solar energy
4.83 kWh/m²
Travel score
2.9
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 Juína reaches about 29°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 32°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)
13022
23022
33022
43022
53022
63022
73022
83022
93022
103022
113022
123022
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922
312922

How December really feels in Juína

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.

Juína weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°30228.912.62.9
Feb29° / 22°28626.912.42.9
Mar29° / 22°26228.712.12.9
Apr30° / 22°1432211.83.6
May30° / 21°5410.511.55.0
Jun30° / 20°112.311.35.9
Jul31° / 19°4111.45.6
Aug33° / 20°122.311.64.4
Sep33° / 22°6711.111.93.5
Oct32° / 22°16421.812.33.0
Nov30° / 22°24926.212.52.9
Dec29° / 22°29128.412.72.9

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 8% of December, with mostly cloudy or overcast conditions the remaining 89%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11189
21189
31189
41090
51090
61090
71090
81090
91090
101090
111189
121189
131189
141189
151288
161288
171288
181288
191288
201387
211387
221387
231288
241288
251189
261189
271189
281090
291090
301090
311090

Chance of precipitation in December

Any precipitation

Juína gets around 291 mm of rain over 28.4 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 92% and peaks near 94% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
192
292
391
491
591
691
791
891
991
1091
1191
1291
1391
1491
1591
1691
1792
1892
1992
2092
2192
2292
2392
2492
2593
2693
2793
2893
2993
3094
3194

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 98% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
11981
21981
31981
41981
51981
61981
71981
81981
91981
102971
112980
122980
132980
142980
152980
162980
172980
182980
192980
202980
212980
221990
231990
241990
251990
261990
271990
281990
291990
301990
311990

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 6 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
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 36 min at the start of December to 12 h 42 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 6:26 AM to 6:38 AM, and sunset from 7:03 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:267:03
212.66:267:04
312.66:277:04
412.66:277:05
512.66:277:05
612.66:287:06
712.66:287:07
812.66:287:07
912.76:287:08
1012.76:297:08
1112.76:297:09
1212.76:307:09
1312.76:307:10
1412.76:307:10
1512.76:317:11
1612.76:317:11
1712.76:327:12
1812.76:327:12
1912.76:337:13
2012.76:337:13
2112.76:337:14
2212.76:347:14
2312.76:347:15
2412.76:357:15
2512.76:357:15
2612.76:367:16
2712.76:367:16
2812.76:377:17
2912.76:377:17
3012.76:387:18
3112.76:387:18

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.83 kWh/m².

For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 5.67 kWh/m² in September across the year — December's 4.83 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.7Bright
314.7Bright
Planning a trip in December

Hazard calendar for Juína

In seasonPeak

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

Juína's monsoon runs October–April, when most of the year's rain falls.

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

Is December a good time to visit Juína?

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

2.9
Sightseeing
8th-best month of the year
3.9
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Juína.

What to pack for Juína in December

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

In December, Juína sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

UV index in Juína 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 Juína peaks around January 23 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 23UV 15Sep 15UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep3Moderate
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Juína 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 Juína is worst in September — around 58 µg/m³ PM2.5 (unhealthy), about 6.8× the cleanest month (July, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateSep 1554 µg/m³Apr 219 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar10Good
Apr9Good
May9Good
Jun11Good
Jul9Good
Aug29Moderate
Sep58Unhealthy
Oct23Moderate
Nov16Moderate
Dec12Moderate
Location & terrain

Where is Juína?

Juína sits at 11.4°S, 58.8°W, 353 m above sea level, in Brazil. The nearest listed city is Brasnorte, 113 km away.

Espigão dOestePimenta Bueno

Topography around Juína

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

Within 3 km, the terrain around Juína has only modest variations in elevation — a maximum elevation change of 68 m around an average of 340 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 228 m; within 80 km, significant variations in elevation — a maximum elevation change of 321 m.

The land around Juína is covered by grassland (49%), artificial surfaces (28%) and trees (20%) within 3 km, grassland (63%) and trees (34%) within 16 km, and trees (66%) and grassland (29%) within 80 km.

3 km
68 m
16 km
228 m
80 km
321 m
treesgrasslandcroplandartificial surfaces
December weather nearby: Brasnorte 113 km · Juara 136 km · Aripuanã 158 km · Vilhena 211 km · Colniza 226 km · Sapezal 236 km · Espigão dOeste 246 km · Pimenta Bueno 267 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 Juína (-11.4205°, -58.7549°, elevation 353 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).