Santa Maria da Boa Vista weather in December

In December, Santa Maria da Boa Vista sees average daytime highs of 35°C and overnight lows near 24°C, with 41 mm of rain across 4.7 wet days and about 12.5 hours of daylight. It is the 3rd-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 35% 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 Santa Maria da Boa Vista's 5th-clearest and 8th-windiest month. For the whole year in context, see Santa Maria da Boa Vista's year-round climate.

Daytime high
35°
3rd warmest
Overnight low
24°
12th coldest
Rainfall
41 mm
4.7 wet days
Daylight
12 h 30 min
5:20 AM – 5:51 PM
Cloud cover
56%
5th clearest
Wind
14 km/h
8th windiest
Solar energy
6.46 kWh/m²
Travel score
3.0
out of 10

Santa Maria da Boa Vista 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 35°C through the month.

A typical December day in Santa Maria da Boa Vista 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 about 1°C warmer than 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
183524
193424
203424
213424
223424
233424
243424
253424
263424
273424
283424
293424
303424
313424

How December really feels in Santa Maria da Boa Vista

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.

Santa Maria da Boa Vista weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 24°769.212.53.2
Feb33° / 23°7510.112.33.2
Mar33° / 23°9211.612.13.3
Apr33° / 23°518.111.83.8
May32° / 22°214.711.64.6
Jun30° / 21°82.111.55.6
Jul30° / 20°51.211.55.9
Aug31° / 20°30.611.75.4
Sep33° / 21°20.411.94.4
Oct35° / 22°6112.23.4
Nov35° / 23°193.112.43.0
Dec35° / 24°414.712.53.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% 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 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35545
45644
55644
65644
75644
85644
95644
105644
115644
125644
135644
145644
155644
165644
175545
185545
195545
205545
215446
225347
235347
245248
255149
265149
275149
285050
295050
305050
315050

Chance of precipitation in December

Any precipitation

Santa Maria da Boa Vista gets around 41 mm of rain over 4.7 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 15% and peaks near 19% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
112
212
311
412
512
612
712
813
913
1013
1114
1214
1315
1415
1515
1616
1716
1816
1917
2017
2117
2217
2318
2418
2518
2618
2718
2819
2919
3019
3119

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 54% of days. Sticky, muggy-or-worse air turns up on roughly 35% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11062244
21161244
31260235
41260235
51260235
61360225
71360225
81359235
91359235
101359235
111258246
121257256
131256266
141156276
151155286
161154296
171054306
181053316
191053316
201052326
21952336
22952336
23950347
24950347
25949348
26949358
27948359
28947359
299473410
309473410
319463411

Wind in December

Winds average 14 km/h in December.

Across December, daily wind ranges from about 14 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
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light 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 5:15 AM to 5:27 AM, and sunset from 5:43 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:155:43
212.55:155:44
312.55:155:44
412.55:165:45
512.55:165:45
612.55:165:46
712.55:175:46
812.55:175:47
912.55:175:47
1012.55:185:48
1112.55:185:48
1212.55:185:49
1312.55:195:49
1412.55:195:50
1512.55:205:50
1612.55:205:51
1712.55:215:51
1812.55:215:52
1912.55:215:52
2012.55:225:53
2112.55:225:53
2212.55:235:54
2312.55:235:54
2412.55:245:55
2512.55:245:55
2612.55:255:56
2712.55:255:56
2812.55:265:56
2912.55:265:57
3012.55:275:57
3112.55:275:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.46 kWh/m².

For context, solar energy here swings from a low near 3.9 kWh/m² to a high of 6.73 kWh/m² in October across the year — December's 6.46 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.4Intense
246.4Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in December

Is December a good time to visit Santa Maria da Boa Vista?

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

3.0
Sightseeing
11th-best month of the year
6.3
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Santa Maria da Boa Vista. The water and warmth also suit a beach or pool day.

What to pack for Santa Maria da Boa Vista in December

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

In December, Santa Maria da Boa Vista sees daytime highs around 35°C and nights near 24°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Santa Maria da Boa Vista 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 Santa Maria da Boa Vista peaks around March 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 10UV 15Jul 13UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun10Very high
Jul9Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec12Extreme
Location & terrain

Where is Santa Maria da Boa Vista?

Santa Maria da Boa Vista sits at 8.8°S, 39.8°W, 351 m above sea level, in Brazil. The nearest listed city is Curaçá, 22 km away.

Topography around Santa Maria da Boa Vista

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santa Maria da Boa Vista.

Within 3 km, the terrain around Santa Maria da Boa Vista has only modest variations in elevation — a maximum elevation change of 142 m around an average of 361 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 270 m; within 80 km, significant variations in elevation — a maximum elevation change of 521 m.

The land around Santa Maria da Boa Vista is covered by shrubs (47%) within 3 km, shrubs (81%) within 16 km, and shrubs (86%) within 80 km.

3 km
142 m
16 km
270 m
80 km
521 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Curaçá 22 km · Lagoa Grande 53 km · Cabrobó 65 km · Abaré 79 km · Parnamirim 84 km · Belém de São Francisco 95 km · Petrolina 99 km · Juazeiro 100 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 Santa Maria da Boa Vista (-8.8078°, -39.8256°, elevation 351 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).