São João do Rio do Peixe weather in December

In December, São João do Rio do Peixe sees average daytime highs of 35°C and overnight lows near 24°C, with 22 mm of rain across 3.8 wet days and about 12.4 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 42% of the time in December, and the air most often feels humid.

Daylight stretches from about 12 h 24 min at the start of December to 12 h 24 min by month's end. Set against the rest of the year, December is São João do Rio do Peixe's 6th-clearest and 6th-windiest month. For the whole year in context, see São João do Rio do Peixe's year-round climate.

Daytime high
35°
3rd warmest
Overnight low
24°
12th coldest
Rainfall
22 mm
3.8 wet days
Daylight
12 h 24 min
5:18 AM – 5:42 PM
Cloud cover
50%
6th clearest
Wind
13 km/h
6th windiest
Solar energy
6.66 kWh/m²
Travel score
2.8
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical December day in São João do Rio do Peixe reaches about 35°C in the afternoon and slips back to 24°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 37°C. Set against its neighbours, December runs on par with November and about 1°C warmer than January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13624
23624
33624
43624
53524
63524
73524
83524
93524
103524
113524
123524
133524
143524
153524
163524
173524
183524
193524
203524
213524
223524
233524
243524
253524
263524
273524
283524
293524
303524
313524

How December really feels in São João do Rio do Peixe

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 do Rio do Peixe weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 24°9211.212.33.0
Feb33° / 24°10212.712.23.1
Mar32° / 23°14016.7123.3
Apr32° / 23°9313.211.93.7
May32° / 23°50711.74.3
Jun32° / 22°18311.64.9
Jul32° / 21°71.611.64.8
Aug33° / 21°40.511.84.2
Sep35° / 22°10.2123.4
Oct36° / 23°60.812.12.9
Nov36° / 24°40.812.32.8
Dec35° / 24°223.812.42.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% 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 37%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26535
36535
46535
56535
66634
76535
86436
96436
106436
116436
126436
136337
146337
156337
166337
176337
186238
196238
206139
216139
226139
236139
246238
256139
266139
276139
286139
296040
306040
316040

Chance of precipitation in December

Any precipitation

São João do Rio do Peixe gets around 22 mm of rain over 3.8 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 12% and peaks near 21% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
14
25
35
45
56
66
77
87
98
109
119
1210
1310
1411
1511
1612
1712
1813
1913
2014
2115
2215
2316
2417
2517
2618
2718
2819
2920
3021
3121

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11663192
21663192
31663192
41661203
51661203
61562203
71561213
81462213
91361224
101360234
111260244
121160254
131159264
141059274
151059274
161058284
171057294
181056304
191055314
201054324
211053334
221052344
231051345
241050355
251048366
261047366
271046377
281045377
291044378
301043389
311042389

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 12 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
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912calm
3012calm
3112calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 24 min at the start of December to 12 h 24 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 5:13 AM to 5:25 AM, and sunset from 5:34 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:135:34
212.45:135:35
312.45:135:35
412.45:145:36
512.45:145:36
612.45:145:37
712.45:155:37
812.45:155:38
912.45:155:38
1012.45:165:39
1112.45:165:39
1212.45:175:40
1312.45:175:40
1412.45:175:41
1512.45:185:41
1612.45:185:42
1712.45:195:42
1812.45:195:43
1912.45:205:43
2012.45:205:44
2112.45:215:44
2212.45:215:44
2312.45:225:45
2412.45:225:45
2512.45:225:46
2612.45:235:46
2712.45:235:47
2812.45:245:47
2912.45:245:48
3012.45:255:48
3112.45:255:49

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.66 kWh/m².

For context, solar energy here swings from a low near 4.83 kWh/m² to a high of 7.19 kWh/m² in October across the year — December's 6.66 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.9Intense
26.9Intense
36.9Intense
46.9Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.4Intense
Planning a trip in December

Hazard calendar for São João do Rio do Peixe

In seasonPeak

None of São João do Rio do Peixe'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 do Rio do Peixe's rainy season runs January–April, 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 São João do Rio do Peixe?

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

2.8
Sightseeing
11th-best month of the year
6.2
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in São João do Rio do Peixe. The water and warmth also suit a beach or pool day.

What to pack for São João do Rio do Peixe in December

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

In December, São João do Rio do Peixe sees daytime highs around 35°C and nights near 24°C. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in São João do Rio do Peixe in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (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 do Rio do Peixe peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 16 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 13UV 15Jul 16UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep13Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme

Air quality in São João do Rio do Peixe 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 do Rio do Peixe is worst in November — around 18 µg/m³ PM2.5 (moderate), about 4.7× the cleanest month (July, 4 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 1418 µg/m³Jul 164 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb9Good
Mar9Good
Apr9Good
May7Good
Jun5Good
Jul4Good
Aug5Good
Sep9Good
Oct15Moderate
Nov18Moderate
Dec13Moderate
Location & terrain

Where is São João do Rio do Peixe?

São João do Rio do Peixe sits at 6.7°S, 38.4°W, 247 m above sea level, in Brazil. The nearest listed city is Cajazeiras, 21 km away.

Topography around São João do Rio do Peixe

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

Within 3 km, the terrain around São João do Rio do Peixe has only modest variations in elevation — a maximum elevation change of 48 m around an average of 248 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 306 m; within 80 km, large variations in elevation — a maximum elevation change of 750 m.

The land around São João do Rio do Peixe is covered by grassland (36%), cropland (31%) and shrubs (25%) within 3 km, shrubs (44%) and grassland (34%) within 16 km, and shrubs (60%) and grassland (27%) within 80 km.

3 km
48 m
16 km
306 m
80 km
750 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Cajazeiras 21 km · Sousa 25 km · São José de Piranhas 44 km · Lavras da Mangabeira 57 km · São Miguel 58 km · Icó 58 km · Barro 62 km · Aurora 62 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 do Rio do Peixe (-6.7292°, -38.4489°, elevation 247 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).