São Miguel do Araguaia weather in December

In December, São Miguel do Araguaia sees average daytime highs of 31°C and overnight lows near 23°C, with 268 mm of rain across 25.4 wet days and about 12.8 hours of daylight. It is the 11th-warmest and 2nd-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 42 min at the start of December to 12 h 48 min by month's end. Set against the rest of the year, December is São Miguel do Araguaia's 11th-clearest and 7th-windiest month. For the whole year in context, see São Miguel do Araguaia's year-round climate.

Daytime high
31°
11th warmest
Overnight low
23°
9th coldest
Rainfall
268 mm
25.4 wet days
Daylight
12 h 48 min
6:53 AM – 7:40 PM
Cloud cover
81%
11th clearest
Wind
6 km/h
7th windiest
Solar energy
5.22 kWh/m²
Travel score
2.9
out of 10

São Miguel do Araguaia 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 31°C through the month.

A typical December day in São Miguel do Araguaia 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 28°C and 34°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)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How December really feels in São Miguel 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 Miguel do Araguaia weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°30726.612.72.9
Feb31° / 23°24923.912.42.8
Mar31° / 23°24025.412.12.9
Apr32° / 23°12716.711.73.4
May33° / 22°213.811.44.3
Jun33° / 21°20.311.24.6
Jul33° / 20°0011.34.5
Aug35° / 22°20.411.63.3
Sep36° / 24°223.711.92.3
Oct34° / 24°11615.712.32.5
Nov32° / 23°23722.812.62.8
Dec31° / 23°26825.412.82.9

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 12% of December, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11684
21684
31684
41684
51684
61684
71684
81783
91882
101882
111882
121882
131981
142080
152080
162080
172278
182278
192278
202278
212278
222278
232278
242278
252179
262179
272179
282179
292080
302080
311981

Chance of precipitation in December

Any precipitation

São Miguel do Araguaia gets around 268 mm of rain over 25.4 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 82% and peaks near 85% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
179
280
380
480
581
681
781
882
982
1082
1182
1282
1383
1483
1583
1683
1783
1883
1983
2083
2183
2283
2383
2483
2583
2683
2783
2884
2984
3084
3185

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
115922
214932
314932
414923
513933
613933
703943
803943
903943
1003943
1103943
1202953
1302953
1402953
1502953
1602953
1702953
1802962
1903952
2003952
2103952
2203952
2303952
2403952
2503952
2603952
2703952
2803952
2903952
3003943
3103943

Wind in December

Winds average 6 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
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 42 min at the start of December to 12 h 48 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 6:49 AM to 7:01 AM, and sunset from 7:32 PM to 7:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:497:32
212.76:497:33
312.76:497:33
412.76:497:34
512.76:507:34
612.76:507:35
712.86:507:35
812.86:517:36
912.86:517:36
1012.86:517:37
1112.86:527:38
1212.86:527:38
1312.86:527:39
1412.86:537:39
1512.86:537:40
1612.86:537:40
1712.86:547:41
1812.86:547:41
1912.86:557:42
2012.86:557:42
2112.86:567:43
2212.86:567:43
2312.86:577:44
2412.86:577:44
2512.86:587:44
2612.86:587:45
2712.86:597:45
2812.86:597:46
2912.87:007:46
3012.87:007:47
3112.87:017:47

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.22 kWh/m².

For context, solar energy here swings from a low near 4.73 kWh/m² to a high of 6.03 kWh/m² in September across the year — December's 5.22 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in December

Hazard calendar for São Miguel do Araguaia

In seasonPeak

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

São Miguel do Araguaia's monsoon runs November–March, 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 Miguel do Araguaia?

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

2.9
Sightseeing
6th-best month of the year
4.2
Beach & pool
10th-best month of the year

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

What to pack for São Miguel do Araguaia in December

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

In December, São Miguel do Araguaia sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

UV index in São Miguel do Araguaia in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (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 Miguel do Araguaia peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 15UV 15Jul 11UV 8
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct11Extreme
Nov13Extreme
Dec12Extreme

Air quality in São Miguel 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 Miguel do Araguaia is worst in September — around 24 µg/m³ PM2.5 (moderate), about 8.8× the cleanest month (July, 3 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 2123 µg/m³Jul 123 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr7Good
May5Good
Jun3Good
Jul3Good
Aug6Good
Sep24Moderate
Oct21Moderate
Nov9Good
Dec8Good
Location & terrain

Where is São Miguel do Araguaia?

São Miguel do Araguaia sits at 13.3°S, 50.2°W, 336 m above sea level, in Brazil. The nearest listed city is Porangatu, 111 km away.

Topography around São Miguel do Araguaia

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

Within 3 km, the terrain around São Miguel do Araguaia has only modest variations in elevation — a maximum elevation change of 88 m around an average of 340 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 214 m; within 80 km, significant variations in elevation — a maximum elevation change of 523 m.

The land around São Miguel do Araguaia is covered by grassland (60%) and trees (20%) within 3 km, grassland (70%) and trees (27%) within 16 km, and grassland (59%) and trees (32%) within 80 km.

3 km
88 m
16 km
214 m
80 km
523 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Porangatu 111 km · Crixás 143 km · Uruaçu 177 km · Formoso do Araguaia 178 km · Itapaci 198 km · Gurupi 209 km · Minaçu 212 km · Rubiataba 214 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 Miguel do Araguaia (-13.275°, -50.1628°, elevation 336 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).