Acará weather in December

In December, Acará sees average daytime highs of 33°C and overnight lows near 24°C, with 105 mm of rain across 16 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 8% 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 06 min by month's end. Set against the rest of the year, December is Acará's 7th-clearest and 5th-windiest month. For the whole year in context, see Acará's year-round climate.

Daytime high
33°
5th warmest
Overnight low
24°
11th coldest
Rainfall
105 mm
16 wet days
Daylight
12 h 06 min
6:06 AM – 6:12 PM
Cloud cover
72%
7th clearest
Wind
8 km/h
5th windiest
Solar energy
5.19 kWh/m²
Travel score
2.9
out of 10

Acará is human 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 33°C through the month.

A typical December day in Acará reaches about 33°C in the afternoon and slips back to 24°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 35°C. Set against its neighbours, December runs about 1°C cooler than November and about 2°C warmer than January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13424
23424
33424
43424
53424
63424
73424
83424
93324
103324
113324
123324
133324
143324
153324
163324
173324
183324
193323
203323
213323
223323
233323
243323
253323
263323
273223
283223
293223
303223
313223

How December really feels in Acará

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.

Acará weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°22025.612.12.6
Feb31° / 23°29525.812.12.6
Mar30° / 23°37629.9122.5
Apr30° / 23°37728.9122.5
May31° / 23°23926.311.92.8
Jun31° / 23°9918.811.93.4
Jul32° / 22°5512.411.93.8
Aug34° / 23°26711.93.6
Sep34° / 23°225.7123.3
Oct34° / 23°296.9123.1
Nov34° / 24°537.812.13.1
Dec33° / 24°1051612.12.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 69%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34258
44159
54159
64159
74159
84060
94060
103862
113862
123763
133664
143565
153367
163268
173169
182971
192872
202773
212575
222476
232476
242278
252278
262179
272179
282179
292080
302080
312080

Chance of precipitation in December

Any precipitation

Acará gets around 105 mm of rain over 16 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 52% and peaks near 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
130
231
332
433
534
636
737
839
941
1043
1145
1246
1348
1450
1552
1654
1755
1857
1958
2059
2161
2262
2363
2464
2565
2666
2767
2868
2969
3070
3171

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 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
15896
25896
35896
44906
54906
64906
74897
83907
93907
103907
113907
123907
133907
143907
153898
163898
172908
182899
192899
2028810
2128810
2228711
2328612
2428513
2528513
2628414
2718415
2818316
2918316
3018217
3118118

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 06 min at the start of December to 12 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 6:13 AM, and sunset from 6:06 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:596:06
212.16:006:06
312.16:006:07
412.16:006:07
512.16:016:07
612.16:016:08
712.16:026:08
812.16:026:09
912.16:026:09
1012.16:036:10
1112.16:036:10
1212.16:046:10
1312.16:046:11
1412.16:056:11
1512.16:056:12
1612.16:066:12
1712.16:066:13
1812.16:066:13
1912.16:076:14
2012.16:076:14
2112.16:086:15
2212.16:086:15
2312.16:096:16
2412.16:096:16
2512.16:106:17
2612.16:106:17
2712.16:116:17
2812.16:116:18
2912.16:126:18
3012.16:126:19
3112.16:136:19

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.19 kWh/m².

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 6.16 kWh/m² in October across the year — December's 5.19 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.3Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.1Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in December

Hazard calendar for Acará

In seasonPeak

None of Acará's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Acará's monsoon runs January–May, 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 Acará?

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

2.9
Sightseeing
7th-best month of the year
5.2
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Acará.

What to pack for Acará in December

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

In December, Acará sees daytime highs around 33°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

UV index in Acará 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 Acará peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Nov 22UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug10Extreme
Sep12Extreme
Oct11Extreme
Nov10Extreme
Dec10Extreme

Air quality in Acará 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 Acará is worst in November — around 32 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (June, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1931 µg/m³Jun 1410 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb18Moderate
Mar18Moderate
Apr15Moderate
May10Good
Jun9Good
Jul11Good
Aug14Moderate
Sep16Moderate
Oct19Moderate
Nov32Moderate
Dec27Moderate
Location & terrain

Where is Acará?

Acará sits at 2.0°S, 48.2°W, 6 m above sea level, in Brazil. The nearest listed city is Concórdia do Pará, 28 km away.

Topography around Acará

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

Within 3 km, the terrain around Acará has only modest variations in elevation — a maximum elevation change of 60 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 76 m; within 80 km, only modest variations in elevation — a maximum elevation change of 88 m.

The land around Acará is covered by trees (76%) within 3 km, trees (91%) within 16 km, and trees (78%) within 80 km.

3 km
60 m
16 km
76 m
80 km
88 m
treesgrasslandartificial surfaceswater
December weather nearby: Concórdia do Pará 28 km · Tomé-Açu 51 km · Bujaru 52 km · São Domingos do Capim 57 km · Moju 64 km · Belém 66 km · Benevides 67 km · Ananindeua 69 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 Acará (-1.9608°, -48.1967°, elevation 6 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).