Tuntum weather in December

In December, Tuntum sees average daytime highs of 33°C and overnight lows near 24°C, with 122 mm of rain across 17 wet days and about 12.3 hours of daylight. It is the 6th-warmest and 5th-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 14% 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 Tuntum's 8th-clearest and 8th-windiest month. For the whole year in context, see Tuntum's year-round climate.

Daytime high
33°
6th warmest
Overnight low
24°
10th coldest
Rainfall
122 mm
17 wet days
Daylight
12 h 18 min
5:46 AM – 6:04 PM
Cloud cover
70%
8th clearest
Wind
6 km/h
8th windiest
Solar energy
5.29 kWh/m²
Travel score
3.0
out of 10

Tuntum is 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 Tuntum reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 30°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)
13324
23324
33324
43324
53324
63324
73324
83324
93324
103324
113324
123324
133324
143324
153324
163324
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273223
283223
293223
303223
313223

How December really feels in Tuntum

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.

Tuntum weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°20525.712.32.8
Feb31° / 23°20724.112.22.8
Mar31° / 23°23427.6122.7
Apr31° / 23°18122.611.93.1
May31° / 23°861311.84.1
Jun32° / 23°132.911.74.8
Jul33° / 22°71.211.74.5
Aug34° / 23°30.511.83.8
Sep35° / 24°81.8123.0
Oct35° / 24°224.312.12.9
Nov34° / 24°6810.212.23.0
Dec33° / 24°1221712.33.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 66%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24258
34258
44258
54357
64258
74258
84159
93961
103862
113961
123862
133763
143763
153565
163466
173367
183367
193268
203169
213169
222971
232971
242971
252872
262773
272773
282773
292674
302575
312575

Chance of precipitation in December

Any precipitation

Tuntum gets around 122 mm of rain over 17 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 56% and peaks near 72% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
141
241
342
442
543
643
744
845
946
1048
1149
1251
1352
1454
1555
1657
1758
1859
1961
2062
2163
2264
2365
2465
2566
2667
2768
2869
2970
3071
3172

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 81% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
16859
26859
368410
468410
558510
658411
758411
848511
948412
1048412
1138413
1238413
1338314
1428315
1528216
1628117
1718217
1818118
1918019
2018019
2117920
2217821
2317722
2417722
2517623
2607624
2707624
2817524
2917425
3017425
3117425

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
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
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 5:40 AM to 5:53 AM, and sunset from 5:57 PM to 6:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:405:57
212.35:405:57
312.35:415:58
412.35:415:58
512.35:415:59
612.35:425:59
712.35:426:00
812.35:426:00
912.35:436:00
1012.35:436:01
1112.35:446:01
1212.35:446:02
1312.35:446:02
1412.35:456:03
1512.35:456:03
1612.35:466:04
1712.35:466:04
1812.35:476:05
1912.35:476:05
2012.35:476:06
2112.35:486:06
2212.35:486:07
2312.35:496:07
2412.35:496:08
2512.35:506:08
2612.35:506:09
2712.35:516:09
2812.35:516:09
2912.35:526:10
3012.35:526:10
3112.35:536:11

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.29 kWh/m².

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.4 kWh/m² in September across the year — December's 5.29 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
304.9Bright
314.9Bright
Planning a trip in December

Hazard calendar for Tuntum

In seasonPeak

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

Tuntum'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 Tuntum?

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

3.0
Sightseeing
6th-best month of the year
5.1
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Tuntum.

What to pack for Tuntum in December

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

In December, Tuntum sees daytime highs around 33°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Tuntum 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 Tuntum peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 13UV 15Jul 17UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Tuntum 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 Tuntum is worst in October — around 36 µg/m³ PM2.5 (poor), about 5.1× the cleanest month (June, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1834 µg/m³Jun 197 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar13Moderate
Apr12Good
May9Good
Jun7Good
Jul8Good
Aug16Moderate
Sep22Moderate
Oct36Poor
Nov27Moderate
Dec18Moderate
Location & terrain

Where is Tuntum?

Tuntum sits at 5.3°S, 44.6°W, 109 m above sea level, in Brazil. The nearest listed city is Presidente Dutra, 18 km away.

Topography around Tuntum

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

Within 3 km, the terrain around Tuntum has only modest variations in elevation — a maximum elevation change of 93 m around an average of 109 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 163 m; within 80 km, significant variations in elevation — a maximum elevation change of 392 m.

The land around Tuntum is covered by grassland (61%) and trees (31%) within 3 km, grassland (57%) and trees (38%) within 16 km, and trees (57%) and grassland (41%) within 80 km.

3 km
93 m
16 km
163 m
80 km
392 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Presidente Dutra 18 km · Dom Pedro 34 km · São Domingos do Maranhão 46 km · Esperantinópolis 50 km · Poção de Pedras 65 km · Barra do Corda 71 km · Fortuna 76 km · Trizidela do Vale 76 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 Tuntum (-5.2581°, -44.6489°, elevation 109 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).