Franco da Rocha weather in December

In December, Franco da Rocha sees average daytime highs of 27°C and overnight lows near 18°C, with 210 mm of rain across 20.6 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 27°C through the month. The sky is clear or mostly clear about 14% 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 Franco da Rocha's 11th-clearest and 4th-windiest month. For the whole year in context, see Franco da Rocha's year-round climate.

Daytime high
27°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
210 mm
20.6 wet days
Daylight
13 h 24 min
6:20 AM – 7:46 PM
Cloud cover
72%
11th clearest
Wind
10 km/h
4th windiest
Solar energy
5.72 kWh/m²
Travel score
4.8
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical December day in Franco da Rocha reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12718
22718
32718
42718
52718
62718
72718
82718
92718
102718
112718
122718
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232719
242719
252719
262719
272719
282719
292719
302719
312719

Franco da Rocha 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
Jan27° / 19°26723.213.34.4
Feb28° / 19°1952012.84.5
Mar27° / 18°16118.812.25.2
Apr26° / 16°739.711.56.8
May23° / 14°667.310.97.3
Jun22° / 12°495.310.67.7
Jul22° / 12°494.610.77.8
Aug24° / 12°374.811.28.0
Sep25° / 14°919.111.97.0
Oct26° / 16°13214.412.55.9
Nov26° / 17°16916.313.15.5
Dec27° / 18°21020.613.44.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23169
33169
43169
52971
62971
72971
82971
92971
102971
112971
122971
132971
143070
153070
163070
173070
183169
193268
203268
213268
223268
233268
243268
253070
263070
272971
282872
292773
302773
312674

Chance of precipitation in December

Any precipitation

Franco da Rocha gets around 210 mm of rain over 20.6 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 67% and peaks near 72% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
159
260
361
462
563
663
764
864
965
1066
1166
1267
1367
1467
1568
1668
1768
1868
1968
2068
2168
2269
2369
2469
2569
2670
2770
2871
2971
3071
3172

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 58% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
111443421
211342431
311341451
411240461
501239481
601138491
701137511
801037521
901036531
1001035541
110934561
120934570
130933580
140833590
150833590
160833590
170732610
180732610
190732610
200632611
210631621
220631621
230530641
240529651
250429661
260428671
270428671
280427672
290327682
300327682
310326692

Wind in December

Winds average 10 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 6:17 AM to 6:28 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)
113.36:177:37
213.36:177:37
313.46:177:38
413.46:177:39
513.46:177:39
613.46:177:40
713.46:187:41
813.46:187:41
913.46:187:42
1013.46:187:42
1113.46:197:43
1213.46:197:44
1313.46:197:44
1413.46:207:45
1513.46:207:45
1613.46:207:46
1713.46:217:46
1813.46:217:47
1913.46:217:47
2013.46:227:48
2113.46:227:48
2213.46:237:49
2313.46:237:49
2413.46:247:50
2513.46:247:50
2613.46:257:51
2713.46:257:51
2813.46:267:52
2913.46:267:52
3013.46:277:52
3113.46:287:53

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.72 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.48 kWh/m² to a high of 5.72 kWh/m² in December across the year — December's 5.72 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in December

Hazard calendar for Franco da Rocha

In seasonPeak

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

Franco da Rocha'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 Franco da Rocha?

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

4.8
Sightseeing
10th-best month of the year
4.9
Beach & pool
10th-best month of the year

December is a reasonable time to visit Franco da Rocha for sightseeing.

What to pack for Franco da Rocha in December

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

In December, Franco da Rocha sees daytime highs around 27°C and nights near 18°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Franco da Rocha 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 Franco da Rocha peaks around January 21 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 21UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Franco da Rocha 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 Franco da Rocha 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 Franco da Rocha?

Franco da Rocha sits at 23.3°S, 46.7°W, 762 m above sea level, in Brazil. The nearest listed city is Francisco Morato, 5.0 km away.

Topography around Franco da Rocha

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

Within 3 km, the terrain around Franco da Rocha has only modest variations in elevation — a maximum elevation change of 125 m around an average of 775 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 542 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,708 m.

The land around Franco da Rocha is covered by artificial surfaces (45%) and trees (39%) within 3 km, trees (66%) within 16 km, and trees (54%) and grassland (23%) within 80 km.

3 km
125 m
16 km
542 m
80 km
1,708 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Francisco Morato 5.0 km · Caieiras 5.0 km · Perus 10 km · Jaraguá 13 km · Anhanguera 14 km · Campo Limpo Paulista 14 km · Mairiporã 14 km · Brasilandia 15 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 Franco da Rocha (-23.3217°, -46.7269°, elevation 762 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).