Melgaço weather in December

In December, Melgaço sees average daytime highs of 32°C and overnight lows near 25°C, with 109 mm of rain across 18.3 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 Melgaço's 7th-clearest and 4th-windiest month. For the whole year in context, see Melgaço's year-round climate.

Daytime high
32°
5th warmest
Overnight low
25°
10th coldest
Rainfall
109 mm
18.3 wet days
Daylight
12 h 06 min
6:16 AM – 6:22 PM
Cloud cover
71%
7th clearest
Wind
8 km/h
4th windiest
Solar energy
5.23 kWh/m²
Travel score
3.1
out of 10

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 Melgaço reaches about 32°C in the afternoon and slips back to 25°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 1°C warmer than January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13325
23325
33325
43325
53325
63325
73325
83325
93325
103325
113225
123225
133225
143225
153225
163225
173225
183225
193224
203224
213224
223224
233224
243224
253224
263224
273224
283224
293124
303124
313124

How December really feels in Melgaço

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.

Melgaço 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°23527.212.12.7
Feb30° / 24°30926.312.12.7
Mar30° / 24°36629.7122.6
Apr30° / 24°36328.8122.6
May31° / 24°27526.511.92.8
Jun31° / 24°13719.611.93.4
Jul31° / 24°8215.111.94.0
Aug32° / 24°337.611.94.2
Sep33° / 24°225.7123.9
Oct33° / 25°296.5123.6
Nov33° / 25°478.312.13.5
Dec32° / 25°10918.312.13.1

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 18% 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
43961
53862
63862
73763
83763
93664
103565
113565
123466
133367
143268
153169
163070
172971
182872
192773
202674
212575
222476
232377
242278
252179
262179
272179
282179
292179
302080
312080

Chance of precipitation in December

Any precipitation

Melgaço gets around 109 mm of rain over 18.3 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 59% and peaks near 78% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
135
237
338
439
541
642
744
846
947
1049
1151
1253
1355
1457
1558
1660
1762
1863
1965
2066
2168
2269
2371
2472
2573
2674
2775
2876
2977
3078
3178

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 (%)
117623
207723
307624
407624
507525
607525
707525
807426
907327
1007327
1107228
1207129
1307030
1407030
1506931
1606832
1706733
1806634
1906634
2006535
2106436
2206337
2306238
2406139
2506139
2606040
2705941
2805941
2905842
3005842
3105842

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 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
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 6:29 PM.

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

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.23 kWh/m².

For context, solar energy here swings from a low near 3.93 kWh/m² to a high of 6.41 kWh/m² in October across the year — December's 5.23 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.3Bright
165.2Bright
175.2Bright
185.2Bright
195.1Bright
205.1Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
254.9Bright
264.9Bright
274.9Bright
284.8Bright
294.8Bright
304.8Bright
314.7Bright
Planning a trip in December

Hazard calendar for Melgaço

In seasonPeak

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

Melgaço'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 Melgaço?

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
7th-best month of the year

December is a weaker month for outdoor sightseeing in Melgaço.

What to pack for Melgaço in December

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

In December, Melgaço sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Melgaço 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 Melgaço 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 Melgaço 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 Melgaço is worst in February — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (July, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2018 µg/m³Jul 119 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb18Moderate
Mar18Moderate
Apr15Moderate
May11Good
Jun9Good
Jul9Good
Aug10Good
Sep12Good
Oct15Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Melgaço?

Melgaço sits at 1.8°S, 50.7°W, 11 m above sea level, in Brazil. The nearest listed city is Portel, 19 km away.

Topography around Melgaço

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

Within 3 km, the terrain around Melgaço has only modest variations in elevation — a maximum elevation change of 25 m around an average of 7 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 Melgaço is covered by trees (49%) and water (45%) within 3 km, trees (70%) and water (21%) 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: Portel 19 km · Breves 29 km · Bagre 57 km · Oeiras do Pará 98 km · Curralinho 102 km · Gurupá 112 km · Anajás 125 km · São Sebastião da Boa Vista 132 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 Melgaço (-1.8044°, -50.7122°, elevation 11 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).