Belém de São Francisco weather in December

In December, Belém de São Francisco sees average daytime highs of 35°C and overnight lows near 24°C, with 29 mm of rain across 3.7 wet days and about 12.5 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 41% of the time in December, and the air most often feels humid.

Daylight stretches from about 12 h 30 min at the start of December to 12 h 30 min by month's end. Set against the rest of the year, December is Belém de São Francisco's 5th-clearest and 8th-windiest month. For the whole year in context, see Belém de São Francisco's year-round climate.

Daytime high
35°
2nd warmest
Overnight low
24°
12th coldest
Rainfall
29 mm
3.7 wet days
Daylight
12 h 30 min
5:17 AM – 5:47 PM
Cloud cover
52%
5th clearest
Wind
15 km/h
8th windiest
Solar energy
6.73 kWh/m²
Travel score
3.1
out of 10

Belém de São Francisco 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 35°C through the month.

A typical December day in Belém de São Francisco reaches about 35°C in the afternoon and slips back to 24°C overnight — a 11°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 on par with November and on par with January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13524
23524
33524
43524
53524
63524
73524
83524
93524
103524
113524
123524
133524
143524
153524
163524
173524
183424
193424
203424
213424
223424
233424
243424
253424
263424
273424
283424
293424
303424
313424

How December really feels in Belém de São Francisco

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.

Belém de São Francisco weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 24°647.312.53.3
Feb34° / 24°608.512.33.3
Mar33° / 24°8010.312.13.4
Apr32° / 23°447.611.84.0
May31° / 22°204.511.65.0
Jun30° / 21°102.411.56.1
Jul29° / 20°61.511.56.4
Aug30° / 20°40.911.76.1
Sep32° / 21°20.311.95.0
Oct34° / 22°7112.23.8
Nov35° / 24°132.212.43.1
Dec35° / 24°293.712.53.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% 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 41%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36238
46238
56238
66337
76337
86337
96337
106337
116337
126238
136238
146139
156139
166139
175941
185941
195842
205743
215644
225644
235545
245446
255446
265347
275347
285446
295446
305347
315446

Chance of precipitation in December

Any precipitation

Belém de São Francisco gets around 29 mm of rain over 3.7 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 12% and peaks near 16% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
19
29
39
49
59
610
710
810
911
1011
1111
1212
1312
1412
1512
1612
1712
1813
1913
2013
2113
2213
2313
2414
2514
2614
2714
2815
2915
3016
3116

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the humid band about 51% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1459334
2559324
3559324
4658315
5658315
6658315
7658315
8756316
9756316
10756316
11656326
12654337
13653347
14652357
15552367
16551377
17450397
18449407
19449417
20348427
21347437
22346447
23345457
24344468
25344468
26343468
27343468
28343469
29343459
303424510
313424410

Wind in December

Winds average 15 km/h in December.

Across December, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 30 min at the start of December to 12 h 30 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 5:11 AM to 5:24 AM, and sunset from 5:40 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:115:40
212.55:125:40
312.55:125:41
412.55:125:41
512.55:135:42
612.55:135:42
712.55:135:43
812.55:145:43
912.55:145:44
1012.55:145:44
1112.55:155:45
1212.55:155:45
1312.55:165:46
1412.55:165:46
1512.55:165:47
1612.55:175:47
1712.55:175:48
1812.55:185:48
1912.55:185:49
2012.55:195:49
2112.55:195:50
2212.55:205:50
2312.55:205:51
2412.55:205:51
2512.55:215:52
2612.55:215:52
2712.55:225:52
2812.55:225:53
2912.55:235:53
3012.55:235:54
3112.55:245:54

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.73 kWh/m².

For context, solar energy here swings from a low near 4.02 kWh/m² to a high of 6.92 kWh/m² in November across the year — December's 6.73 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
316.6Intense
Planning a trip in December

Is December a good time to visit Belém de São Francisco?

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

3.1
Sightseeing
11th-best month of the year
6.5
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Belém de São Francisco. The water and warmth also suit a beach or pool day.

What to pack for Belém de São Francisco in December

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

In December, Belém de São Francisco sees daytime highs around 35°C and nights near 24°C. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in Belém de São Francisco in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Belém de São Francisco peaks around March 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 10UV 15Jun 23UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec12Extreme
Location & terrain

Where is Belém de São Francisco?

Belém de São Francisco sits at 8.8°S, 39.0°W, 317 m above sea level, in Brazil. The nearest listed city is Abaré, 17 km away.

Topography around Belém de São Francisco

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Belém de São Francisco.

Within 3 km, the terrain around Belém de São Francisco has only modest variations in elevation — a maximum elevation change of 33 m around an average of 312 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 87 m; within 80 km, large variations in elevation — a maximum elevation change of 643 m.

The land around Belém de São Francisco is covered by shrubs (31%) and grassland (28%) within 3 km, shrubs (44%) and grassland (38%) within 16 km, and shrubs (82%) within 80 km.

3 km
33 m
16 km
87 m
80 km
643 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Abaré 17 km · Cabrobó 46 km · Floresta 47 km · Salgueiro 77 km · Petrolândia 86 km · Santa Maria da Boa Vista 95 km · Tacaratu 98 km · Serrita 98 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 Belém de São Francisco (-8.7539°, -38.9658°, elevation 317 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).