Pacajá weather in December

In December, Pacajá sees average daytime highs of 32°C and overnight lows near 23°C, with 200 mm of rain across 23.6 wet days and about 12.2 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 6% 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 12 min by month's end. Set against the rest of the year, December is Pacajá's 8th-clearest and 7th-windiest month. For the whole year in context, see Pacajá's year-round climate.

Daytime high
32°
6th warmest
Overnight low
23°
9th coldest
Rainfall
200 mm
23.6 wet days
Daylight
12 h 12 min
6:12 AM – 6:25 PM
Cloud cover
78%
8th clearest
Wind
6 km/h
7th windiest
Solar energy
4.9 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 32°C through the month.

A typical December day in Pacajá reaches about 32°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
133223
143223
153223
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How December really feels in Pacajá

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.

Pacajá weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°31028.812.22.6
Feb30° / 23°33726.512.12.6
Mar30° / 23°40229.6122.6
Apr31° / 23°30628.411.92.5
May31° / 23°17524.811.83.0
Jun32° / 22°6212.911.84.0
Jul33° / 22°317.111.84.1
Aug34° / 23°224.611.93.6
Sep34° / 24°296.1123.3
Oct34° / 24°7011.412.13.1
Nov33° / 24°1231712.23.0
Dec32° / 23°20023.612.22.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 80%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32872
42773
52773
62575
72575
82476
92377
102278
112278
122179
132080
141981
151882
161783
171783
181783
191585
201585
211585
221585
231585
241585
251585
261585
271585
281585
291585
301486
311486

Chance of precipitation in December

Any precipitation

Pacajá gets around 200 mm of rain over 23.6 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 77% and peaks near 90% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
160
261
361
462
563
664
765
866
968
1069
1170
1272
1374
1475
1577
1678
1780
1881
1982
2083
2184
2285
2386
2486
2587
2688
2789
2889
2989
3090
3190

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 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
12917
22917
32917
42917
52917
62917
71927
81927
91927
101927
111927
121927
131927
141927
151927
161927
170937
180937
190937
200937
210937
220928
230928
240928
250928
260928
270928
280919
290919
300919
310919

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 6 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
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 12 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 0 minutes over December. Sunrise moves from 6:06 AM to 6:19 AM, and sunset from 6:18 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:066:18
212.26:066:19
312.26:076:19
412.26:076:20
512.26:086:20
612.26:086:21
712.26:086:21
812.26:096:22
912.26:096:22
1012.26:096:23
1112.26:106:23
1212.26:106:23
1312.26:116:24
1412.26:116:24
1512.26:126:25
1612.26:126:25
1712.26:136:26
1812.26:136:26
1912.26:136:27
2012.26:146:27
2112.26:146:28
2212.26:156:28
2312.26:156:29
2412.26:166:29
2512.26:166:30
2612.26:176:30
2712.26:176:31
2812.26:186:31
2912.26:186:31
3012.26:196:32
3112.26:196:32

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.9 kWh/m².

For context, solar energy here swings from a low near 3.97 kWh/m² to a high of 6.14 kWh/m² in October across the year — December's 4.9 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.0Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.8Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.6Bright
254.6Bright
264.6Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.4Bright
Planning a trip in December

Hazard calendar for Pacajá

In seasonPeak

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

Pacajá'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 Pacajá?

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 Pacajá.

What to pack for Pacajá in December

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

In December, Pacajá sees daytime highs around 32°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 Pacajá 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 Pacajá peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 19 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 14UV 15Nov 19UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec10Extreme

Air quality in Pacajá 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 Pacajá is worst in October — around 56 µg/m³ PM2.5 (unhealthy), about 7.1× the cleanest month (June, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorUnhealthyModerateOct 2456 µg/m³Jun 228 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb15Moderate
Mar14Moderate
Apr13Moderate
May10Good
Jun8Good
Jul8Good
Aug14Moderate
Sep30Moderate
Oct56Unhealthy
Nov56Unhealthy
Dec20Moderate
Location & terrain

Where is Pacajá?

Pacajá sits at 3.8°S, 50.6°W, 95 m above sea level, in Brazil. The nearest listed city is Anapu, 74 km away.

Topography around Pacajá

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

Within 3 km, the terrain around Pacajá has only modest variations in elevation — a maximum elevation change of 93 m around an average of 89 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 210 m; within 80 km, significant variations in elevation — a maximum elevation change of 419 m.

The land around Pacajá is covered by grassland (54%) and trees (35%) within 3 km, trees (51%) and grassland (48%) within 16 km, and trees (66%) and grassland (34%) within 80 km.

3 km
93 m
16 km
210 m
80 km
419 m
treesgrasslandartificial surfaceswater
December weather nearby: Anapu 74 km · Tucuruí 107 km · Novo Repartimento 108 km · Breu Branco 127 km · Baião 158 km · Goianésia do Pará 171 km · Jacundá 182 km · Vitória do Xingu 186 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 Pacajá (-3.8378°, -50.6375°, elevation 95 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).