Pedro do Rosário weather in December

In December, Pedro do Rosário sees average daytime highs of 33°C and overnight lows near 24°C, with 99 mm of rain across 14.9 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 7th-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 17% of the time in December, and the air most often feels oppressive.

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

Daytime high
33°
4th warmest
Overnight low
24°
11th coldest
Rainfall
99 mm
14.9 wet days
Daylight
12 h 12 min
5:52 AM – 6:03 PM
Cloud cover
67%
7th clearest
Wind
9 km/h
4th windiest
Solar energy
5.37 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 33°C through the month.

A typical December day in Pedro do Rosário reaches about 33°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 31°C and 35°C. Set against its neighbours, December runs on par with 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
113325
123325
133325
143325
153325
163325
173325
183325
193324
203324
213324
223324
233324
243324
253324
263324
273224
283224
293224
303224
313224

How December really feels in Pedro do Rosário

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.

Pedro do Rosário weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°23525.212.22.6
Feb31° / 24°31226.112.12.5
Mar30° / 24°42229.8122.5
Apr30° / 24°44128.411.92.6
May31° / 24°27625.311.93.0
Jun30° / 23°12218.611.83.8
Jul31° / 23°7412.911.84.5
Aug32° / 23°287.311.94.5
Sep33° / 24°174.2124.1
Oct34° / 24°24512.13.6
Nov33° / 25°447.412.13.5
Dec33° / 24°9914.912.23.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 22% of December, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24654
34654
44654
54753
64753
74654
84654
94654
104555
114456
124456
134357
144258
154159
164060
173862
183763
193763
203466
213466
223367
233268
243268
253169
263169
273070
282971
292872
302872
312872

Chance of precipitation in December

Any precipitation

Pedro do Rosário gets around 99 mm of rain over 14.9 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 48% and peaks near 67% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
128
229
330
431
532
633
734
835
937
1038
1140
1242
1344
1446
1548
1649
1751
1853
1954
2056
2157
2258
2359
2460
2561
2663
2763
2864
2965
3066
3167

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 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
14942
24942
33952
43952
53952
63952
72962
82962
92962
102962
111972
121972
131972
141972
151972
160982
170982
180982
190982
200982
210982
220982
230973
241963
251963
261963
271954
281954
291954
301954
311945

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 12 min at the start of December to 12 h 12 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 5:46 AM to 5:59 AM, and sunset from 5:56 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:465:56
212.25:475:56
312.25:475:57
412.25:475:57
512.25:485:58
612.25:485:58
712.25:495:59
812.25:495:59
912.25:495:59
1012.25:506:00
1112.25:506:00
1212.25:516:01
1312.25:516:01
1412.25:526:02
1512.25:526:02
1612.25:526:03
1712.25:536:03
1812.25:536:04
1912.25:546:04
2012.25:546:05
2112.25:556:05
2212.25:556:06
2312.25:566:06
2412.25:566:06
2512.25:576:07
2612.25:576:07
2712.25:586:08
2812.25:586:08
2912.25:596:09
3012.25:596:09
3112.25:596:10

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.37 kWh/m².

For context, solar energy here swings from a low near 4.19 kWh/m² to a high of 6.1 kWh/m² in October across the year — December's 5.37 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.0Bright
315.0Bright
Planning a trip in December

Hazard calendar for Pedro do Rosário

In seasonPeak

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

Pedro do Rosário'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 Pedro do Rosário?

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
5.4
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Pedro do Rosário.

What to pack for Pedro do Rosário in December

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

In December, Pedro do Rosário sees daytime highs around 33°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Pedro do Rosário 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 Pedro do Rosário peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 18UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov10Extreme
Dec11Extreme

Air quality in Pedro do Rosário 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 Pedro do Rosário is worst in November — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (June, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1918 µg/m³Jun 199 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar16Moderate
Apr14Moderate
May10Good
Jun9Good
Jul9Good
Aug10Good
Sep9Good
Oct13Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Pedro do Rosário?

Pedro do Rosário sits at 3.0°S, 45.4°W, 28 m above sea level, in Brazil. The nearest listed city is Matinha, 38 km away.

Topography around Pedro do Rosário

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

Within 3 km, the terrain around Pedro do Rosário has only modest variations in elevation — a maximum elevation change of 46 m around an average of 33 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 101 m; within 80 km, only modest variations in elevation — a maximum elevation change of 191 m.

The land around Pedro do Rosário is covered by trees (59%) and grassland (37%) within 3 km, trees (68%) and grassland (31%) within 16 km, and trees (44%) and grassland (44%) within 80 km.

3 km
46 m
16 km
101 m
80 km
191 m
treesgrasslandartificial surfaceswaterwetlandmangroves
December weather nearby: Matinha 38 km · Penalva 41 km · Presidente Sarney 42 km · Viana 47 km · Zé Doca 48 km · São Vicente Ferrer 53 km · Cajari 54 km · Pinheiro 58 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 Pedro do Rosário (-2.9724°, -45.3513°, elevation 28 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).