Vargem Grande weather in December

In December, Vargem Grande sees average daytime highs of 35°C and overnight lows near 25°C, with 75 mm of rain across 11.4 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 35°C in the first days to 34°C by the end. The sky is clear or mostly clear about 19% 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 Vargem Grande's 7th-clearest and 4th-windiest month. For the whole year in context, see Vargem Grande's year-round climate.

Daytime high
35°
4th warmest
Overnight low
25°
11th coldest
Rainfall
75 mm
11.4 wet days
Daylight
12 h 12 min
5:46 AM – 5:58 PM
Cloud cover
66%
7th clearest
Wind
10 km/h
4th windiest
Solar energy
5.45 kWh/m²
Travel score
2.6
out of 10

Vargem Grande is human settlement in Maranhão, Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 35°C in the first days to 34°C by the end.

A typical December day in Vargem Grande reaches about 35°C in the afternoon and slips back to 25°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 37°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)
13525
23525
33525
43525
53525
63525
73525
83525
93525
103525
113525
123525
133525
143525
153525
163525
173525
183525
193425
203425
213425
223425
233425
243425
253425
263425
273425
283425
293425
303425
313425

How December really feels in Vargem Grande

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
12 feel dangerously hot (≥ 39°C)
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.

Vargem Grande weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°20922.112.22.6
Feb32° / 24°24223.412.12.6
Mar31° / 23°30628.3122.5
Apr31° / 23°30026.811.92.6
May31° / 23°17020.211.83.3
Jun31° / 23°509.911.84.4
Jul32° / 23°27511.84.5
Aug34° / 24°61.311.93.8
Sep35° / 24°40.7123.0
Oct36° / 25°132.512.12.5
Nov36° / 25°32512.22.5
Dec35° / 25°7511.412.22.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
25050
34852
44852
54852
64753
74753
84654
94654
104555
114555
124357
134258
144159
154060
163961
173862
183862
193763
203664
213565
223466
233367
243367
253268
263268
273070
283070
292971
302971
312872

Chance of precipitation in December

Any precipitation

Vargem Grande gets around 75 mm of rain over 11.4 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 37% and peaks near 57% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
121
222
322
423
523
624
725
826
927
1028
1129
1230
1332
1433
1534
1636
1737
1839
1940
2042
2143
2244
2346
2447
2549
2650
2751
2853
2954
3055
3157

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 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1135631
2134641
3133651
4133651
5132661
6131671
7131671
8130681
9129691
10129691
11128701
12127711
13026731
14026731
15025741
16024742
17023752
18022762
19021772
20020782
21019792
22018802
23017812
24016822
25015832
26014842
27013843
28012853
29011863
30011863
31010873

Wind in December

Winds average 10 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 5:40 AM to 5:53 AM, and sunset from 5:51 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:405:51
212.25:405:52
312.25:405:52
412.25:415:52
512.25:415:53
612.25:425:53
712.25:425:54
812.25:425:54
912.25:435:55
1012.25:435:55
1112.25:445:56
1212.25:445:56
1312.25:445:57
1412.25:455:57
1512.25:455:57
1612.25:465:58
1712.25:465:58
1812.25:475:59
1912.25:475:59
2012.25:486:00
2112.25:486:00
2212.25:486:01
2312.25:496:01
2412.25:496:02
2512.25:506:02
2612.25:506:03
2712.25:516:03
2812.25:516:04
2912.25:526:04
3012.25:526:04
3112.25:536:05

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.45 kWh/m².

For context, solar energy here swings from a low near 4.35 kWh/m² to a high of 6.34 kWh/m² in October across the year — December's 5.45 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in December

Hazard calendar for Vargem Grande

In seasonPeak

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

Vargem Grande'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 Vargem Grande?

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

2.6
Sightseeing
6th-best month of the year
5.3
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Vargem Grande.

What to pack for Vargem Grande in December

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

In December, Vargem Grande sees daytime highs around 35°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Vargem Grande in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Vargem Grande peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 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 16UV 15Jul 17UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct11Extreme
Nov11Extreme
Dec11Extreme

Air quality in Vargem Grande 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 Vargem Grande is worst in October — around 25 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (June, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 2125 µg/m³Jun 199 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb16Moderate
Mar15Moderate
Apr13Moderate
May10Good
Jun8Good
Jul9Good
Aug12Good
Sep16Moderate
Oct25Moderate
Nov23Moderate
Dec17Moderate
Location & terrain

Where is Vargem Grande?

Vargem Grande sits at 3.5°S, 43.9°W, 44 m above sea level, in Brazil. The nearest listed city is Pirapemas, 40 km away.

Topography around Vargem Grande

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

Within 3 km, the terrain around Vargem Grande has only modest variations in elevation — a maximum elevation change of 77 m around an average of 39 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 101 m; within 80 km, only modest variations in elevation — a maximum elevation change of 139 m.

The land around Vargem Grande is covered by grassland (45%) and trees (30%) within 3 km, trees (71%) and grassland (24%) within 16 km, and trees (72%) within 80 km.

3 km
77 m
16 km
101 m
80 km
139 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Pirapemas 40 km · São Benedito do Rio Preto 49 km · Itapecuru Mirim 52 km · Cantanhede 52 km · Santa Rita 64 km · Chapadinha 65 km · Urbano Santos 68 km · Coroatá 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 Vargem Grande (-3.5431°, -43.9158°, elevation 44 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).