Pirassununga weather in December

In December, Pirassununga sees average daytime highs of 29°C and overnight lows near 20°C, with 215 mm of rain across 21.8 wet days and about 13.3 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 15% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 12 min at the start of December to 13 h 18 min by month's end. Set against the rest of the year, December is Pirassununga's 11th-clearest and 6th-windiest month. For the whole year in context, see Pirassununga's year-round climate.

Daytime high
29°
4th warmest
Overnight low
20°
10th coldest
Rainfall
215 mm
21.8 wet days
Daylight
13 h 18 min
6:26 AM – 7:46 PM
Cloud cover
71%
11th clearest
Wind
8 km/h
6th windiest
Solar energy
5.84 kWh/m²
Travel score
4.0
out of 10

Pirassununga is human settlement in Brazil.

Air quality
Moderate
PM10 31 µg/m³ · 2012

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 29°C through the month.

A typical December day in Pirassununga reaches about 29°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12920
22920
32920
42920
52920
62920
72920
82920
92920
102920
112920
122920
132920
142920
152920
162920
172920
182920
192920
202920
212920
222920
232920
242920
252920
262920
272920
282920
292920
302920
312920

Pirassununga weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°25122.913.23.8
Feb29° / 20°17318.612.84.0
Mar29° / 20°15118.312.24.5
Apr28° / 18°628.811.56.4
May26° / 15°536.2117.6
Jun25° / 14°323.410.78.2
Jul25° / 13°263.410.88.3
Aug27° / 14°253.611.27.8
Sep29° / 17°667.911.96.0
Oct29° / 18°11613.812.54.8
Nov29° / 19°17017.113.14.5
Dec29° / 20°21521.813.34.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33466
43268
53268
63268
73169
83169
93169
103169
113268
123367
133268
143268
153367
163367
173367
183466
193466
203466
213565
223565
233565
243466
253367
263367
273169
283169
293070
302971
312872

Chance of precipitation in December

Any precipitation

Pirassununga gets around 215 mm of rain over 21.8 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 70% and peaks near 73% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
162
263
364
465
566
667
768
869
969
1070
1171
1271
1372
1472
1572
1672
1772
1872
1972
2072
2172
2272
2372
2472
2572
2672
2772
2872
2973
3073
3173

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 68% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
111028574
21927585
31827595
41726615
51725625
61625626
71524646
81524646
91423666
100422686
110322696
120322696
130321706
140321706
150321706
160220726
170220717
180220717
190220717
200220717
210219718
220119728
230118738
240118729
250118729
260117739
2701177210
2801167310
2901167211
3001167211
3101157311

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
68calm
78calm
88calm
98calm
108calm
118calm
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 12 min at the start of December to 13 h 18 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 6:22 AM to 6:33 AM, and sunset from 7:37 PM to 7:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.26:227:37
213.36:227:38
313.36:227:38
413.36:227:39
513.36:237:39
613.36:237:40
713.36:237:41
813.36:237:41
913.36:247:42
1013.36:247:43
1113.36:247:43
1213.36:247:44
1313.36:257:44
1413.36:257:45
1513.36:257:45
1613.36:267:46
1713.36:267:47
1813.36:277:47
1913.36:277:48
2013.36:277:48
2113.36:287:49
2213.36:287:49
2313.36:297:49
2413.36:297:50
2513.36:307:50
2613.36:307:51
2713.36:317:51
2813.36:317:52
2913.36:327:52
3013.36:327:52
3113.36:337:53

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.84 kWh/m².

For context, solar energy here swings from a low near 3.81 kWh/m² to a high of 5.94 kWh/m² in November across the year — December's 5.84 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in December

Hazard calendar for Pirassununga

In seasonPeak

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

Pirassununga's monsoon runs October–March, 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 Pirassununga?

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

4.0
Sightseeing
10th-best month of the year
5.1
Beach & pool
11th-best month of the year

December is a reasonable time to visit Pirassununga for sightseeing.

What to pack for Pirassununga in December

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

In December, Pirassununga sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Pirassununga 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 Pirassununga peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 11UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Pirassununga 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 Pirassununga is worst in September — around 32 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (November, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1430 µg/m³Nov 2310 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Good
Mar12Good
Apr13Moderate
May15Moderate
Jun15Moderate
Jul16Moderate
Aug23Moderate
Sep32Moderate
Oct16Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Pirassununga?

Pirassununga sits at 22.0°S, 47.4°W, 631 m above sea level, in Brazil. The nearest listed city is Porto Ferreira, 17 km away.

Topography around Pirassununga

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

Within 3 km, the terrain around Pirassununga has only modest variations in elevation — a maximum elevation change of 109 m around an average of 617 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 303 m; within 80 km, large variations in elevation — a maximum elevation change of 1,116 m.

The land around Pirassununga is covered by artificial surfaces (40%), cropland (25%) and trees (23%) within 3 km, cropland (62%) and trees (25%) within 16 km, and cropland (46%) and trees (35%) within 80 km.

3 km
109 m
16 km
303 m
80 km
1,116 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Porto Ferreira 17 km · Leme 21 km · Descalvado 22 km · Santa Cruz das Palmeiras 26 km · Santa Rita do Passa Quatro 32 km · Tambaú 36 km · Araras 40 km · Casa Branca 43 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 Pirassununga (-21.9961°, -47.4258°, elevation 631 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).