Jacundá weather in December

In December, Jacundá sees average daytime highs of 31°C and overnight lows near 23°C, with 201 mm of rain across 24 wet days and about 12.3 hours of daylight. It is the 8th-warmest and 5th-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 5% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of December to 12 h 18 min by month's end. Set against the rest of the year, December is Jacundá's 8th-clearest and 8th-windiest month. For the whole year in context, see Jacundá's year-round climate.

Daytime high
31°
8th warmest
Overnight low
23°
9th coldest
Rainfall
201 mm
24 wet days
Daylight
12 h 18 min
6:05 AM – 6:20 PM
Cloud cover
79%
8th clearest
Wind
5 km/h
8th windiest
Solar energy
4.96 kWh/m²
Travel score
2.8
out of 10

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 Jacundá 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 29°C and 33°C. Set against its neighbours, December runs about 1°C cooler than November and about 1°C warmer than January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53223
63223
73223
83223
93223
103223
113223
123223
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How December really feels in Jacundá

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.

Jacundá weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°32028.712.22.6
Feb30° / 23°32026.412.12.6
Mar30° / 23°36029.1122.6
Apr31° / 23°27227.411.92.6
May31° / 23°14520.311.83.2
Jun33° / 22°438.411.73.9
Jul34° / 22°214.811.83.5
Aug35° / 23°122.711.93.1
Sep34° / 24°244.9123.2
Oct34° / 24°5611.212.13.1
Nov32° / 24°13017.512.23.0
Dec31° / 23°2012412.32.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% 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 81%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22674
32674
42575
52575
62575
72476
82377
92278
102278
112278
122080
132080
141981
151882
161882
171783
181783
191684
201684
211585
221585
231585
241585
251585
261585
271486
281486
291486
301486
311486

Chance of precipitation in December

Any precipitation

Jacundá gets around 201 mm of rain over 24 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 78% and peaks near 88% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
164
264
365
465
566
667
768
869
971
1072
1173
1275
1376
1477
1579
1680
1781
1882
1983
2084
2184
2285
2385
2486
2586
2687
2787
2888
2988
3088
3188

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 83% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
118316
218316
318316
418316
518316
618316
718316
818316
918316
1018217
1108317
1208317
1308317
1408317
1508317
1608317
1708317
1808317
1908317
2008317
2108317
2208317
2308317
2408317
2508317
2608317
2708317
2808317
2908317
3008317
3108317

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 12 min at the start of December to 12 h 18 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 5:59 AM to 6:12 AM, and sunset from 6:13 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:596:13
212.25:596:14
312.26:006:14
412.26:006:15
512.26:006:15
612.26:016:16
712.26:016:16
812.26:026:17
912.36:026:17
1012.36:026:17
1112.36:036:18
1212.36:036:18
1312.36:046:19
1412.36:046:19
1512.36:046:20
1612.36:056:20
1712.36:056:21
1812.36:066:21
1912.36:066:22
2012.36:076:22
2112.36:076:23
2212.36:086:23
2312.36:086:24
2412.36:096:24
2512.36:096:25
2612.36:106:25
2712.36:106:25
2812.36:116:26
2912.36:116:26
3012.36:126:27
3112.36:126:27

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.96 kWh/m².

For context, solar energy here swings from a low near 4.25 kWh/m² to a high of 6.09 kWh/m² in September across the year — December's 4.96 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
164.9Bright
174.9Bright
184.9Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in December

Hazard calendar for Jacundá

In seasonPeak

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

Jacundá's monsoon runs December–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 Jacundá?

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

2.8
Sightseeing
8th-best month of the year
4.3
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Jacundá.

What to pack for Jacundá in December

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

In December, Jacundá sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Jacundá in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jacundá peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 10 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeVery highMar 13UV 15Dec 10UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec10Very high

Air quality in Jacundá 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 Jacundá is worst in November — around 39 µg/m³ PM2.5 (poor), about 4.4× the cleanest month (June, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateNov 939 µg/m³Jun 139 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar13Moderate
Apr12Good
May10Good
Jun9Good
Jul11Good
Aug16Moderate
Sep24Moderate
Oct38Poor
Nov39Poor
Dec23Moderate
Location & terrain

Where is Jacundá?

Jacundá sits at 4.4°S, 49.1°W, 100 m above sea level, in Brazil. The nearest listed city is Breu Branco, 66 km away.

Topography around Jacundá

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

Within 3 km, the terrain around Jacundá has only modest variations in elevation — a maximum elevation change of 50 m around an average of 104 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 152 m; within 80 km, significant variations in elevation — a maximum elevation change of 342 m.

The land around Jacundá is covered by grassland (64%) within 3 km, grassland (63%) and trees (35%) within 16 km, and trees (48%) and grassland (42%) within 80 km.

3 km
50 m
16 km
152 m
80 km
342 m
treesgrasslandartificial surfaceswaterwetland
December weather nearby: Breu Branco 66 km · Goianésia do Pará 67 km · Novo Repartimento 77 km · Itupiranga 80 km · Bom Jesus do Tocantins 88 km · Tucuruí 98 km · Marabá 104 km · Rondon do Pará 122 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 Jacundá (-4.447°, -49.1156°, elevation 100 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).