São João Batista weather in December

In December, São João Batista sees average daytime highs of 32°C and overnight lows near 25°C, with 82 mm of rain across 14.1 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 22% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of December to 12 h 12 min by month's end. Set against the rest of the year, December is São João Batista's 7th-clearest and 4th-windiest month. For the whole year in context, see São João Batista's year-round climate.

Daytime high
32°
4th warmest
Overnight low
25°
10th coldest
Rainfall
82 mm
14.1 wet days
Daylight
12 h 12 min
5:50 AM – 6:00 PM
Cloud cover
64%
7th clearest
Wind
13 km/h
4th windiest
Solar energy
5.44 kWh/m²
Travel score
3.4
out of 10

São João Batista 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 32°C through the month.

A typical December day in São João Batista reaches about 32°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, December runs on par with November and about 1°C warmer than January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13326
23326
33326
43326
53326
63326
73326
83326
93326
103325
113325
123325
133325
143325
153225
163225
173225
183225
193225
203225
213225
223225
233225
243225
253225
263225
273225
283225
293225
303225
313225

How December really feels in São João Batista

Once humidity and wind are folded in, December averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

São João Batista weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 25°20724.812.22.8
Feb31° / 25°2722612.12.6
Mar30° / 25°36030.1122.5
Apr31° / 25°36928.711.92.5
May31° / 25°23024.711.93.0
Jun31° / 25°9716.811.83.9
Jul31° / 24°6111.711.84.4
Aug32° / 25°184.611.94.5
Sep33° / 25°102.2124.1
Oct33° / 25°183.412.13.9
Nov33° / 26°346.412.13.8
Dec32° / 25°8214.112.23.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45149
55149
65248
75149
85149
95050
104951
114951
124852
134753
144654
154555
164456
174357
184159
194060
203961
213862
223862
233565
243565
253466
263367
273367
283268
293268
303169
313070

Chance of precipitation in December

Any precipitation

São João Batista gets around 82 mm of rain over 14.1 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 46% and peaks near 66% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
125
226
326
427
528
629
731
832
933
1035
1137
1238
1340
1442
1544
1646
1748
1850
1952
2054
2155
2256
2358
2459
2560
2661
2762
2863
2964
3065
3166

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 73% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
18515
28515
38515
48515
58416
68416
78317
88317
98218
108119
118119
128020
137822
147723
157624
167426
177327
187228
197030
206931
216733
226634
236436
246337
256238
266139
276139
286040
296040
306040
315941

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712calm
2812calm
2912calm
3012calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 12 min at the start of December to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:44 AM to 5:57 AM, and sunset from 5:54 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:445:54
212.25:455:54
312.25:455:55
412.25:455:55
512.25:465:55
612.25:465:56
712.25:465:56
812.25:475:57
912.25:475:57
1012.25:485:58
1112.25:485:58
1212.25:495:59
1312.25:495:59
1412.25:496:00
1512.25:506:00
1612.25:506:00
1712.25:516:01
1812.25:516:01
1912.25:526:02
2012.25:526:02
2112.25:536:03
2212.25:536:03
2312.25:546:04
2412.25:546:04
2512.25:546:05
2612.25:556:05
2712.25:556:06
2812.25:566:06
2912.25:566:07
3012.25:576:07
3112.25:576:07

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.44 kWh/m².

For context, solar energy here swings from a low near 4.22 kWh/m² to a high of 6.19 kWh/m² in October across the year — December's 5.44 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in December

Hazard calendar for São João Batista

In seasonPeak

None of São João Batista's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

São João Batista's monsoon runs January–May, 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 São João Batista?

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

3.4
Sightseeing
7th-best month of the year
5.7
Beach & pool
6th-best month of the year

December is a weaker month for outdoor sightseeing in São João Batista.

What to pack for São João Batista in December

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

In December, São João Batista sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near São João Batista in December

The nearest coast averages about 28°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 60 km away) is warmest in May at about 29°C and coldest in October near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar28Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Warm
Oct28Warm
Nov28Warm
Dec28Warm

UV index in São João Batista in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São João Batista peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 18UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in São João Batista 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 São João Batista is worst in November — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (June, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1918 µg/m³Jun 199 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar16Moderate
Apr14Moderate
May10Good
Jun9Good
Jul9Good
Aug10Good
Sep9Good
Oct13Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is São João Batista?

São João Batista sits at 3.0°S, 44.8°W, 6 m above sea level, in Brazil. The nearest listed city is São Vicente Ferrer, 11 km away.

Topography around São João Batista

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

Within 3 km, the terrain around São João Batista has only modest variations in elevation — a maximum elevation change of 32 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 62 m; within 80 km, only modest variations in elevation — a maximum elevation change of 171 m.

The land around São João Batista is covered by grassland (52%), trees (26%) and wetland (20%) within 3 km, grassland (42%) and wetland (36%) within 16 km, and trees (43%) and grassland (27%) within 80 km.

3 km
32 m
16 km
62 m
80 km
171 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
December weather nearby: São Vicente Ferrer 11 km · São Bento 29 km · Matinha 30 km · Palmeirândia 36 km · Viana 37 km · Anajatuba 40 km · Cajari 47 km · Bacabeira 55 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 São João Batista (-2.9553°, -44.8069°, elevation 6 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).