Piracaia weather in December

In December, Piracaia sees average daytime highs of 26°C and overnight lows near 18°C, with 262 mm of rain across 22.9 wet days and about 13.4 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 12% of the time in December, and the air most often feels humid.

Daylight stretches from about 13 h 18 min at the start of December to 13 h 24 min by month's end. Set against the rest of the year, December is Piracaia's 11th-clearest and 4th-windiest month. For the whole year in context, see Piracaia's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
262 mm
22.9 wet days
Daylight
13 h 24 min
6:19 AM – 7:44 PM
Cloud cover
74%
11th clearest
Wind
8 km/h
4th windiest
Solar energy
5.54 kWh/m²
Travel score
4.6
out of 10

Piracaia 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 26°C through the month.

A typical December day in Piracaia reaches about 26°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 29°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12617
22617
32617
42617
52617
62617
72617
82617
92617
102617
112617
122617
132617
142618
152618
162618
172618
182618
192618
202618
212618
222618
232618
242618
252618
262618
272618
282618
292618
302618
312618

Piracaia weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°31724.813.34.3
Feb27° / 18°25520.712.84.5
Mar26° / 17°21120.812.25.0
Apr25° / 16°8311.511.56.7
May22° / 13°678.110.97.1
Jun22° / 12°455.310.67.5
Jul22° / 11°494.710.77.7
Aug23° / 12°405.311.27.9
Sep24° / 14°9810.311.97.0
Oct25° / 16°15415.912.55.8
Nov25° / 16°19918.313.15.3
Dec26° / 18°26222.913.44.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
22872
32773
42773
52674
62674
72674
82575
92575
102575
112773
122773
132674
142674
152674
162773
172773
182773
192872
202872
212872
222872
232773
242773
252773
262575
272575
282476
292476
302476
312476

Chance of precipitation in December

Any precipitation

Piracaia gets around 262 mm of rain over 22.9 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 74% 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 (%)
167
268
368
469
569
670
770
871
971
1072
1173
1273
1374
1474
1575
1675
1776
1876
1976
2077
2177
2277
2377
2477
2577
2678
2778
2878
2978
3078
3178

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 33% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12235421
22215423
31205524
41195525
51185526
61185427
71175428
81165429
91165330
101155430
110145630
120145531
130135631
140135532
150125632
160125632
170115633
180115633
190115534
200105634
210105535
22095635
23095536
24085537
25085438
26075439
27075340
28075241
29075142
30075043
31065143

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 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
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 18 min at the start of December to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 6:16 AM to 6:27 AM, and sunset from 7:35 PM to 7:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:167:35
213.36:167:35
313.36:167:36
413.36:167:37
513.36:167:37
613.46:167:38
713.46:177:39
813.46:177:39
913.46:177:40
1013.46:177:40
1113.46:187:41
1213.46:187:42
1313.46:187:42
1413.46:197:43
1513.46:197:43
1613.46:197:44
1713.46:207:44
1813.46:207:45
1913.46:217:45
2013.46:217:46
2113.46:217:46
2213.46:227:47
2313.46:227:47
2413.46:237:48
2513.46:237:48
2613.46:247:49
2713.46:247:49
2813.46:257:49
2913.46:257:50
3013.46:267:50
3113.46:277:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.54 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.56 kWh/m² to a high of 5.54 kWh/m² in November across the year — December's 5.54 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in December

Hazard calendar for Piracaia

In seasonPeak

In December, Piracaia sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Piracaia's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Piracaia?

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

4.6
Sightseeing
10th-best month of the year
4.4
Beach & pool
11th-best month of the year

December is a reasonable time to visit Piracaia for sightseeing.

What to pack for Piracaia in December

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

In December, Piracaia sees daytime highs around 26°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 23 days see rain.

rain gearlight clothessun protection

UV index in Piracaia in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Piracaia peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 20UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Piracaia 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 Piracaia is worst in June — around 71 µg/m³ PM2.5 (unhealthy), about 2.3× the cleanest month (December, 31 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJun 2370 µg/m³Dec 2031 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb34Moderate
Mar41Poor
Apr48Poor
May62Unhealthy
Jun71Unhealthy
Jul70Unhealthy
Aug60Unhealthy
Sep53Poor
Oct39Poor
Nov32Moderate
Dec31Moderate
Location & terrain

Where is Piracaia?

Piracaia sits at 23.1°S, 46.4°W, 822 m above sea level, in Brazil. The nearest listed city is Bom Jesus dos Perdões, 14 km away.

Topography around Piracaia

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

Within 3 km, the terrain around Piracaia has significant variations in elevation — a maximum elevation change of 309 m around an average of 859 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 889 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,859 m.

The land around Piracaia is covered by grassland (59%) and trees (28%) within 3 km, trees (51%) and grassland (37%) within 16 km, and trees (48%) and grassland (35%) within 80 km.

3 km
309 m
16 km
889 m
80 km
1,859 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Bom Jesus dos Perdões 14 km · Nazaré Paulista 15 km · Atibaia 21 km · Bragança Paulista 22 km · Extrema 23 km · Santa Isabel 32 km · Bairro da Penha 35 km · Mairiporã 38 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 Piracaia (-23.0539°, -46.3581°, elevation 822 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).