Sumaré weather in December

In December, Sumaré sees average daytime highs of 29°C and overnight lows near 20°C, with 213 mm of rain across 19.7 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 29°C through the month. The sky is clear or mostly clear about 17% of the time in December, and the air most often feels muggy.

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 Sumaré's 11th-clearest and 6th-windiest month. For the whole year in context, see Sumaré's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
20°
10th coldest
Rainfall
213 mm
19.7 wet days
Daylight
13 h 24 min
6:23 AM – 7:47 PM
Cloud cover
68%
11th clearest
Wind
9 km/h
6th windiest
Solar energy
5.96 kWh/m²
Travel score
4.1
out of 10

Sumaré 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 29°C through the month.

A typical December day in Sumaré 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 26°C and 33°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
223020
233020
243020
253020
263020
273020
283020
292920
302920
312920

Sumaré 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
Jan30° / 20°27022.413.23.7
Feb30° / 20°18618.312.83.9
Mar29° / 20°14617.212.24.6
Apr28° / 18°688.311.56.4
May25° / 15°606.410.97.5
Jun25° / 14°424.310.68.1
Jul25° / 13°384.110.78.2
Aug27° / 14°32411.27.9
Sep28° / 16°788.211.96.2
Oct29° / 18°12313.312.55.0
Nov29° / 19°16915.713.14.7
Dec29° / 20°21319.713.44.1

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 19% of December, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23862
33862
43763
53664
63664
73565
83565
93664
103565
113664
123664
133763
143664
153664
163763
173763
183763
193763
203763
213862
223862
233862
243664
253664
263565
273466
283367
293268
303268
313169

Chance of precipitation in December

Any precipitation

Sumaré gets around 213 mm of rain over 19.7 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 64% and peaks near 68% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
156
257
358
458
559
660
761
861
962
1063
1163
1264
1364
1465
1565
1665
1766
1866
1966
2066
2166
2266
2366
2466
2567
2667
2767
2868
2968
3068
3168

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 61% of days. Sticky, muggy-or-worse air turns up on roughly 71% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
111130535
211030536
311029546
40929557
50928567
60828568
70827578
80726598
90726589
100725599
110625609
120625609
130524629
1405246110
1505246110
1605236210
1704236211
1804236211
1904226311
2004226212
2103216412
2203216412
2303206413
2403206413
2502196613
2602186614
2702186614
2802176714
2902176615
3002176615
3102166616

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 9 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
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:20 AM to 6:31 AM, and sunset from 7:38 PM to 7:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:207:38
213.36:207:38
313.36:207:39
413.36:207:40
513.36:207:40
613.36:217:41
713.36:217:42
813.46:217:42
913.46:217:43
1013.46:217:44
1113.46:227:44
1213.46:227:45
1313.46:227:45
1413.46:237:46
1513.46:237:46
1613.46:237:47
1713.46:247:48
1813.46:247:48
1913.46:257:49
2013.46:257:49
2113.46:267:50
2213.46:267:50
2313.46:267:51
2413.46:277:51
2513.46:277:51
2613.46:287:52
2713.46:297:52
2813.46:297:53
2913.46:307:53
3013.46:307:53
3113.46:317:54

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.96 kWh/m².

For context, solar energy here swings from a low near 3.66 kWh/m² to a high of 6.03 kWh/m² in November across the year — December's 5.96 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.0Bright
66.0Bright
76.0Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
196.0Bright
206.0Bright
216.0Bright
226.0Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in December

Hazard calendar for Sumaré

In seasonPeak

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

Sumaré'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 Sumaré?

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

4.1
Sightseeing
10th-best month of the year
5.4
Beach & pool
10th-best month of the year

December is a reasonable time to visit Sumaré for sightseeing.

What to pack for Sumaré in December

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

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

light clothesrain gearsun protection

UV index in Sumaré 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 Sumaré peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (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 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Sumaré 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 Sumaré is worst in September — around 32 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1032 µg/m³Dec 1516 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar19Moderate
Apr22Moderate
May26Moderate
Jun28Moderate
Jul30Moderate
Aug31Moderate
Sep32Moderate
Oct22Moderate
Nov16Moderate
Dec16Moderate
Location & terrain

Where is Sumaré?

Sumaré sits at 22.8°S, 47.3°W, 573 m above sea level, in Brazil. The nearest listed city is Nova Odessa, 6.0 km away.

Topography around Sumaré

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

Within 3 km, the terrain around Sumaré has only modest variations in elevation — a maximum elevation change of 82 m around an average of 575 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 178 m; within 80 km, large variations in elevation — a maximum elevation change of 852 m.

The land around Sumaré is covered by artificial surfaces (47%) and trees (23%) within 3 km, cropland (33%), artificial surfaces (26%) and trees (21%) within 16 km, and trees (34%), cropland (32%) and grassland (26%) within 80 km.

3 km
82 m
16 km
178 m
80 km
852 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Nova Odessa 6.0 km · Hortolândia 6.0 km · Americana 11 km · Paulínia 13 km · Monte Mor 15 km · Santa Bárbara d'Oeste 17 km · Cosmópolis 21 km · Campinas 23 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 Sumaré (-22.8219°, -47.2669°, elevation 573 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).