Batatais weather in December

In December, Batatais sees average daytime highs of 28°C and overnight lows near 20°C, with 236 mm of rain across 23.7 wet days and about 13.2 hours of daylight. It is the 7th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 11% 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 Batatais's 11th-clearest and 7th-windiest month. For the whole year in context, see Batatais's year-round climate.

Daytime high
28°
7th warmest
Overnight low
20°
11th coldest
Rainfall
236 mm
23.7 wet days
Daylight
13 h 18 min
6:29 AM – 7:44 PM
Cloud cover
74%
11th clearest
Wind
8 km/h
7th windiest
Solar energy
5.7 kWh/m²
Travel score
3.9
out of 10

Batatais is settlement in São Paulo federated state, 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 28°C through the month.

A typical December day in Batatais reaches about 28°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 31°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
42820
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152920
162920
172920
182920
192920
202920
212920
222920
232920
242920
252920
262920
272820
282820
292820
302820
312820

Batatais weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°26523.513.13.9
Feb29° / 20°18919.212.74.1
Mar29° / 20°16619.412.14.5
Apr28° / 18°689.511.56.3
May26° / 15°425.7117.6
Jun25° / 14°252.710.88.3
Jul26° / 14°172.410.98.4
Aug28° / 15°172.711.37.7
Sep29° / 18°687.311.95.8
Oct30° / 19°11313.612.54.7
Nov29° / 19°17118134.4
Dec28° / 20°23623.713.23.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23070
32971
42872
52773
62773
72674
82674
92773
102674
112674
122674
132773
142773
152773
162872
172872
182872
192971
202971
212971
222971
232872
242872
252773
262674
272674
282476
292476
302575
312575

Chance of precipitation in December

Any precipitation

Batatais gets around 236 mm of rain over 23.7 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 75% 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 (%)
168
269
370
472
573
673
774
875
975
1075
1175
1276
1376
1476
1576
1676
1776
1876
1976
2076
2176
2277
2377
2477
2578
2678
2778
2878
2978
3078
3178

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 78% of days. Sticky, muggy-or-worse air turns up on roughly 81% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11724662
21623682
31522702
41521712
51420723
61419733
71318762
81317772
90317782
100216802
110216802
120216802
130216802
140216802
150116812
160116812
170116812
180116812
190116812
200116803
210116803
220116803
230115813
240115804
250015814
260114814
270114805
280113815
290113815
300113815
310112816

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 6:25 AM to 6:36 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)
113.26:257:35
213.26:257:36
313.26:257:37
413.26:257:37
513.26:257:38
613.26:267:39
713.26:267:39
813.26:267:40
913.26:267:40
1013.26:277:41
1113.26:277:42
1213.26:277:42
1313.36:287:43
1413.36:287:43
1513.36:287:44
1613.36:297:44
1713.36:297:45
1813.36:297:45
1913.36:307:46
2013.36:307:46
2113.36:317:47
2213.36:317:47
2313.36:327:48
2413.36:327:48
2513.36:337:49
2613.36:337:49
2713.36:347:50
2813.36:347:50
2913.36:357:50
3013.36:357:51
3113.36:367:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.7 kWh/m².

For context, solar energy here swings from a low near 3.96 kWh/m² to a high of 5.99 kWh/m² in October across the year — December's 5.7 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.8Bright
215.8Bright
225.8Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in December

Hazard calendar for Batatais

In seasonPeak

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

Batatais's monsoon runs November–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 Batatais?

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

3.9
Sightseeing
11th-best month of the year
4.7
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Batatais.

What to pack for Batatais in December

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

In December, Batatais sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Batatais 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 Batatais peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 22UV 15Jun 21UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep10Very high
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Batatais 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 Batatais is worst in September — around 43 µg/m³ PM2.5 (poor), about 5.2× the cleanest month (November, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1540 µg/m³Nov 229 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr11Good
May12Good
Jun11Good
Jul11Good
Aug20Moderate
Sep43Poor
Oct15Moderate
Nov8Good
Dec9Good
Location & terrain

Where is Batatais?

Batatais sits at 20.9°S, 47.6°W, 877 m above sea level, in Brazil. The nearest listed city is Brodowski, 14 km away.

Topography around Batatais

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

Within 3 km, the terrain around Batatais has only modest variations in elevation — a maximum elevation change of 147 m around an average of 862 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 408 m; within 80 km, large variations in elevation — a maximum elevation change of 825 m.

The land around Batatais is covered by artificial surfaces (40%), cropland (26%) and trees (21%) within 3 km, cropland (63%) and trees (24%) within 16 km, and cropland (53%) and trees (31%) within 80 km.

3 km
147 m
16 km
408 m
80 km
825 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Brodowski 14 km · Jardinópolis 23 km · Altinópolis 27 km · Serrana 36 km · Orlândia 37 km · Ribeirão Preto 40 km · Franca 44 km · São Joaquim da Barra 44 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 Batatais (-20.8911°, -47.585°, elevation 877 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).