Amarante do Maranhão weather in December

In December, Amarante do Maranhão sees average daytime highs of 31°C and overnight lows near 23°C, with 160 mm of rain across 20.2 wet days and about 12.3 hours of daylight. It is the 7th-warmest and 4th-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 8% 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 Amarante do Maranhão's 8th-clearest and 8th-windiest month. For the whole year in context, see Amarante do Maranhão's year-round climate.

Daytime high
31°
7th warmest
Overnight low
23°
10th coldest
Rainfall
160 mm
20.2 wet days
Daylight
12 h 18 min
5:54 AM – 6:13 PM
Cloud cover
75%
8th clearest
Wind
6 km/h
8th windiest
Solar energy
5.07 kWh/m²
Travel score
3.3
out of 10

Amarante do Maranhão 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 Amarante do Maranhão reaches about 31°C in the afternoon and slips back to 23°C overnight — a 9°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 about 1°C warmer than January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53223
63223
73223
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213122
223122
233122
243122
253122
263122
273122
283122
293122
303022
313022

How December really feels in Amarante do Maranhão

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.

Amarante do Maranhão weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°21426.412.33.0
Feb30° / 22°2082412.23.0
Mar30° / 22°21527.2122.9
Apr30° / 22°15321.611.93.3
May31° / 22°7711.611.84.3
Jun32° / 21°8211.75.0
Jul33° / 21°50.911.74.8
Aug34° / 21°20.411.84.3
Sep34° / 22°112123.8
Oct33° / 23°386.112.13.6
Nov32° / 23°9113.712.33.5
Dec31° / 23°16020.212.33.3

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 17% of December, with mostly cloudy or overcast conditions the remaining 75%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23367
33367
43367
53367
63367
73268
83169
93169
103070
113070
122872
132773
142773
152575
162575
172476
182377
192278
202278
212278
222179
232080
242080
251981
261981
271981
281783
291783
301783
311684

Chance of precipitation in December

Any precipitation

Amarante do Maranhão gets around 160 mm of rain over 20.2 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 66% and peaks near 79% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
154
254
354
455
555
656
757
858
959
1060
1161
1262
1363
1464
1565
1666
1767
1868
1969
2070
2170
2271
2372
2473
2574
2675
2776
2877
2978
3078
3179

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
Muggy (%)Oppressive (%)Miserable (%)
113870
213870
312880
412880
512880
611890
711890
810900
99910
109910
118920
127930
137930
146940
156940
165950
174960
184960
193970
203970
213970
222971
232971
242971
252971
261981
271981
281981
291981
301981
311981

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 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 5:48 AM to 6:01 AM, and sunset from 6:06 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:486:06
212.35:486:06
312.35:486:07
412.35:496:07
512.35:496:08
612.35:496:08
712.35:506:08
812.35:506:09
912.35:516:09
1012.35:516:10
1112.35:516:10
1212.35:526:11
1312.35:526:11
1412.35:536:12
1512.35:536:12
1612.35:546:13
1712.35:546:13
1812.35:546:14
1912.35:556:14
2012.35:556:15
2112.35:566:15
2212.35:566:16
2312.35:576:16
2412.35:576:17
2512.35:586:17
2612.35:586:17
2712.35:596:18
2812.35:596:18
2912.36:006:19
3012.36:006:19
3112.36:016:20

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.07 kWh/m².

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.33 kWh/m² in September across the year — December's 5.07 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.1Bright
145.1Bright
155.1Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.7Bright
Planning a trip in December

Hazard calendar for Amarante do Maranhão

In seasonPeak

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

Amarante do Maranhão'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 Amarante do Maranhão?

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

3.3
Sightseeing
8th-best month of the year
4.9
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Amarante do Maranhão.

What to pack for Amarante do Maranhão in December

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

In December, Amarante do Maranhão sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Amarante do Maranhão 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 Amarante do Maranhão peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 11UV 15Jul 12UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Amarante do Maranhão 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 Amarante do Maranhão is worst in October — around 41 µg/m³ PM2.5 (poor), about 6.5× the cleanest month (June, 6 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateOct 1340 µg/m³Jun 166 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar12Good
Apr11Good
May9Good
Jun6Good
Jul9Good
Aug17Moderate
Sep37Poor
Oct41Poor
Nov29Moderate
Dec20Moderate
Location & terrain

Where is Amarante do Maranhão?

Amarante do Maranhão sits at 5.6°S, 46.7°W, 247 m above sea level, in Brazil. The nearest listed city is Sítio Novo, 35 km away.

Topography around Amarante do Maranhão

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

Within 3 km, the terrain around Amarante do Maranhão has only modest variations in elevation — a maximum elevation change of 87 m around an average of 252 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 185 m; within 80 km, significant variations in elevation — a maximum elevation change of 456 m.

The land around Amarante do Maranhão is covered by grassland (63%) and trees (28%) within 3 km, trees (50%) and grassland (47%) within 16 km, and trees (57%) and grassland (40%) within 80 km.

3 km
87 m
16 km
185 m
80 km
456 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Sítio Novo 35 km · Governador Edison Lobão 72 km · Grajaú 72 km · João Lisboa 74 km · Imperatriz 83 km · Açailândia 109 km · Arame 111 km · Porto Franco 112 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 Amarante do Maranhão (-5.5667°, -46.7422°, elevation 247 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).