Portel weather in December

In December, Portel sees average daytime highs of 32°C and overnight lows near 24°C, with 114 mm of rain across 17.3 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 11% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of December to 12 h 06 min by month's end. Set against the rest of the year, December is Portel's 7th-clearest and 4th-windiest month. For the whole year in context, see Portel's year-round climate.

Daytime high
32°
5th warmest
Overnight low
24°
10th coldest
Rainfall
114 mm
17.3 wet days
Daylight
12 h 06 min
6:16 AM – 6:23 PM
Cloud cover
71%
7th clearest
Wind
8 km/h
4th windiest
Solar energy
5.21 kWh/m²
Travel score
3.1
out of 10

Portel 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 32°C through the month.

A typical December day in Portel reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, December runs about 1°C cooler than November and about 2°C warmer than January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
53324
63324
73324
83324
93324
103324
113324
123324
133324
143324
153324
163224
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273224
283224
293224
303224
313224

How December really feels in Portel

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.

Portel weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°23726.412.12.7
Feb30° / 23°30826.112.12.6
Mar30° / 24°36929.4122.6
Apr30° / 24°38929122.5
May31° / 24°28127.311.92.7
Jun31° / 23°14120.611.93.2
Jul32° / 23°9216.311.93.6
Aug33° / 24°449.511.93.7
Sep34° / 24°265.8123.6
Oct34° / 24°296.3123.4
Nov33° / 24°538.112.13.3
Dec32° / 24°11417.312.13.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 70%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33961
43862
53862
63664
73664
83664
93664
103565
113565
123367
133367
143268
153169
163070
172971
182872
192773
202773
212575
222575
232575
242377
252278
262278
272278
282278
292179
302179
312179

Chance of precipitation in December

Any precipitation

Portel gets around 114 mm of rain over 17.3 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 75% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
133
234
335
437
538
640
742
843
945
1047
1149
1250
1352
1454
1555
1657
1758
1860
1961
2063
2164
2266
2367
2468
2569
2671
2772
2873
2974
3074
3175

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 68% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
127721
227721
327622
417722
517722
617623
717623
817524
917524
1017425
1117326
1217227
1317128
1417029
1516930
1616831
1716732
1816633
1916534
2016435
2116435
2216336
2316237
2406238
2506139
2606139
2706040
2806040
2905941
3005941
3105941

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 06 min at the start of December to 12 h 06 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 6:10 AM to 6:23 AM, and sunset from 6:16 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:106:16
212.16:106:17
312.16:116:17
412.16:116:17
512.16:116:18
612.16:126:18
712.16:126:19
812.16:136:19
912.16:136:20
1012.16:136:20
1112.16:146:20
1212.16:146:21
1312.16:156:21
1412.16:156:22
1512.16:166:22
1612.16:166:23
1712.16:176:23
1812.16:176:24
1912.16:176:24
2012.16:186:25
2112.16:186:25
2212.16:196:26
2312.16:196:26
2412.16:206:27
2512.16:206:27
2612.16:216:27
2712.16:216:28
2812.16:226:28
2912.16:226:29
3012.16:236:29
3112.16:236:30

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.21 kWh/m².

For context, solar energy here swings from a low near 3.92 kWh/m² to a high of 6.36 kWh/m² in October across the year — December's 5.21 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.4Bright
105.4Bright
115.4Bright
125.3Bright
135.3Bright
145.3Bright
155.2Bright
165.2Bright
175.2Bright
185.1Bright
195.1Bright
205.1Bright
215.0Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.9Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.7Bright
Planning a trip in December

Hazard calendar for Portel

In seasonPeak

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

Portel'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 Portel?

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

3.1
Sightseeing
7th-best month of the year
5.1
Beach & pool
6th-best month of the year

December is a weaker month for outdoor sightseeing in Portel.

What to pack for Portel in December

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

In December, Portel sees daytime highs around 32°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 Portel 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 Portel peaks around March 14 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 14UV 15Jul 17UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov10Extreme
Dec10Extreme

Air quality in Portel 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 Portel is worst in November — around 22 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (June, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1221 µg/m³Jun 209 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar17Moderate
Apr14Moderate
May11Good
Jun9Good
Jul10Good
Aug11Good
Sep14Moderate
Oct19Moderate
Nov22Moderate
Dec15Moderate
Location & terrain

Where is Portel?

Portel sits at 1.9°S, 50.8°W, 12 m above sea level, in Brazil. The nearest listed city is Melgaço, 19 km away.

Topography around Portel

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

Within 3 km, the terrain around Portel has only modest variations in elevation — a maximum elevation change of 25 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 37 m; within 80 km, only modest variations in elevation — a maximum elevation change of 75 m.

The land around Portel is covered by water (76%) within 3 km, trees (65%) and water (25%) within 16 km, and trees (90%) within 80 km.

3 km
25 m
16 km
37 m
80 km
75 m
treesgrasslandartificial surfaceswaterwetland
December weather nearby: Melgaço 19 km · Breves 47 km · Bagre 68 km · Oeiras do Pará 108 km · Gurupá 108 km · Curralinho 115 km · Anajás 144 km · São Sebastião da Boa Vista 145 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 Portel (-1.9356°, -50.8211°, elevation 12 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).