São Domingos do Araguaia weather in December

In December, São Domingos do Araguaia sees average daytime highs of 31°C and overnight lows near 23°C, with 211 mm of rain across 24.1 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 7% of the time in December, and the air most often feels oppressive.

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

Daytime high
31°
8th warmest
Overnight low
23°
9th coldest
Rainfall
211 mm
24.1 wet days
Daylight
12 h 18 min
6:02 AM – 6:21 PM
Cloud cover
79%
8th clearest
Wind
5 km/h
8th windiest
Solar energy
4.97 kWh/m²
Travel score
3.0
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 São Domingos do Araguaia reaches about 31°C in the afternoon and slips back to 23°C overnight — a 7°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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133124
143124
153123
163123
173123
183123
193123
203123
213123
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How December really feels in São Domingos do Araguaia

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.

São Domingos do Araguaia 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°27727.912.32.8
Feb30° / 23°27325.712.22.7
Mar30° / 23°28628.4122.7
Apr31° / 23°22225.111.92.9
May31° / 23°12116.311.83.7
Jun32° / 23°224.411.74.4
Jul33° / 22°112.111.74.2
Aug34° / 23°5111.83.8
Sep34° / 24°183.4123.7
Oct33° / 24°6910.212.13.6
Nov32° / 24°13617.512.33.3
Dec31° / 23°21124.112.33.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% 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 (%)
12773
22773
32773
42674
52575
62575
72476
82377
92278
102179
112179
122179
131981
141981
151882
161882
171882
181882
191783
201684
211684
221684
231684
241684
251684
261684
271684
281684
291684
301585
311585

Chance of precipitation in December

Any precipitation

São Domingos do Araguaia gets around 211 mm of rain over 24.1 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 86% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
165
265
365
466
567
668
769
870
971
1072
1173
1275
1376
1478
1579
1680
1782
1882
1983
2084
2184
2285
2385
2486
2586
2686
2786
2886
2986
3086
3186

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
15545
25545
35545
45545
55545
65545
75545
85644
95644
105743
115842
125842
135941
146040
156139
166238
176337
186337
196436
206436
216436
226535
236535
246436
256436
266436
276436
286436
296535
306535
316535

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 18 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 0 minutes over December. Sunrise moves from 5:56 AM to 6:09 AM, and sunset from 6:14 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:566:14
212.35:566:14
312.35:566:15
412.35:576:15
512.35:576:15
612.35:576:16
712.35:586:16
812.35:586:17
912.35:596:17
1012.35:596:18
1112.35:596:18
1212.36:006:19
1312.36:006:19
1412.36:016:20
1512.36:016:20
1612.36:026:21
1712.36:026:21
1812.36:026:22
1912.36:036:22
2012.36:036:23
2112.36:046:23
2212.36:046:24
2312.36:056:24
2412.36:056:24
2512.36:066:25
2612.36:066:25
2712.36:076:26
2812.36:076:26
2912.36:086:27
3012.36:086:27
3112.36:096:28

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.97 kWh/m².

For context, solar energy here swings from a low near 4.42 kWh/m² to a high of 6.28 kWh/m² in September across the year — December's 4.97 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.1Bright
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
234.8Bright
244.8Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.6Bright
Planning a trip in December

Hazard calendar for São Domingos do Araguaia

In seasonPeak

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

São Domingos do Araguaia's monsoon runs November–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 São Domingos do Araguaia?

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

3.0
Sightseeing
8th-best month of the year
4.4
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in São Domingos do Araguaia.

What to pack for São Domingos do Araguaia in December

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

In December, São Domingos do Araguaia 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 São Domingos do Araguaia 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 São Domingos do Araguaia peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 11UV 15Jul 13UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct11Extreme
Nov11Extreme
Dec10Very high

Air quality in São Domingos do Araguaia 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 São Domingos do Araguaia is worst in October — around 34 µg/m³ PM2.5 (moderate), about 4.5× the cleanest month (July, 8 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1534 µg/m³Jul 108 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar12Moderate
Apr12Good
May10Good
Jun8Good
Jul8Good
Aug18Moderate
Sep31Moderate
Oct34Moderate
Nov29Moderate
Dec20Moderate
Location & terrain

Where is São Domingos do Araguaia?

São Domingos do Araguaia sits at 5.5°S, 48.7°W, 132 m above sea level, in Brazil. The nearest listed city is Marabá, 47 km away.

Topography around São Domingos do Araguaia

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Domingos do Araguaia.

Within 3 km, the terrain around São Domingos do Araguaia has only modest variations in elevation — a maximum elevation change of 54 m around an average of 137 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 116 m; within 80 km, significant variations in elevation — a maximum elevation change of 511 m.

The land around São Domingos do Araguaia is covered by grassland (69%) and trees (23%) within 3 km, grassland (73%) and trees (26%) within 16 km, and grassland (61%) and trees (36%) within 80 km.

3 km
54 m
16 km
116 m
80 km
511 m
treesgrasslandartificial surfaceswater
December weather nearby: Marabá 47 km · Bom Jesus do Tocantins 56 km · Araguatins 70 km · Itupiranga 80 km · Eldorado dos Carajás 93 km · São Geraldo do Araguaia 98 km · Rondon do Pará 112 km · Curionópolis 114 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 São Domingos do Araguaia (-5.5378°, -48.7333°, elevation 132 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).