Valença do Piauí weather in December

In December, Valença do Piauí sees average daytime highs of 34°C and overnight lows near 24°C, with 73 mm of rain across 10.2 wet days and about 12.4 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 34°C in the first days to 33°C by the end. The sky is clear or mostly clear about 19% of the time in December, and the air most often feels muggy.

Daylight stretches from about 12 h 18 min at the start of December to 12 h 24 min by month's end. Set against the rest of the year, December is Valença do Piauí's 8th-clearest and 8th-windiest month. For the whole year in context, see Valença do Piauí's year-round climate.

Daytime high
34°
5th warmest
Overnight low
24°
10th coldest
Rainfall
73 mm
10.2 wet days
Daylight
12 h 24 min
5:32 AM – 5:54 PM
Cloud cover
65%
8th clearest
Wind
8 km/h
8th windiest
Solar energy
5.7 kWh/m²
Travel score
3.1
out of 10

Valença do Piauí 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

Highs ease over the month, from about 34°C in the first days to 33°C by the end.

A typical December day in Valença do Piauí reaches about 34°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 36°C. Set against its neighbours, December runs about 2°C cooler than November and about 2°C warmer than January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13425
23425
33425
43425
53425
63425
73425
83425
93425
103425
113425
123425
133424
143424
153424
163424
173424
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324
313324

How December really feels in Valença do Piauí

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.

Valença do Piauí weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°19620.312.33.1
Feb31° / 22°18919.912.23.2
Mar31° / 22°21823.5123.2
Apr31° / 22°13716.611.93.7
May32° / 23°476.811.74.4
Jun32° / 22°81.211.64.8
Jul33° / 22°40.611.74.6
Aug34° / 22°10.211.83.9
Sep36° / 24°30.3122.9
Oct36° / 25°14212.12.4
Nov35° / 25°345.912.32.6
Dec34° / 24°7310.212.43.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 24% 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 (%)
14654
24753
34852
44852
54852
64852
74852
84753
94753
104753
114753
124753
134753
144555
154456
164555
174456
184357
194357
204258
214159
223961
233961
243862
253763
263763
273763
283565
293565
303565
313466

Chance of precipitation in December

Any precipitation

Valença do Piauí gets around 73 mm of rain over 10.2 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 34% and peaks near 50% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
124
224
325
425
525
626
726
827
927
1028
1129
1230
1331
1432
1532
1633
1734
1835
1935
2036
2137
2238
2339
2440
2541
2642
2744
2845
2947
3048
3150

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 46% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
18374312
28374312
37364313
47364313
57364314
67354314
77354315
86354415
96344416
106344416
116334417
125334517
135324518
145314618
155314618
164304619
174304719
184294720
194294721
203284722
213274722
223264823
232254825
242244826
252234827
262214829
272204830
282194732
292174734
302164735
312154637

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.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 18 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 6 minutes over December. Sunrise moves from 5:26 AM to 5:39 AM, and sunset from 5:47 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:265:47
212.35:275:48
312.45:275:48
412.45:275:48
512.45:285:49
612.45:285:49
712.45:285:50
812.45:295:50
912.45:295:51
1012.45:305:51
1112.45:305:52
1212.45:305:52
1312.45:315:53
1412.45:315:53
1512.45:325:54
1612.45:325:54
1712.45:325:55
1812.45:335:55
1912.45:335:56
2012.45:345:56
2112.45:345:57
2212.45:355:57
2312.45:355:58
2412.45:365:58
2512.45:365:59
2612.45:375:59
2712.45:375:59
2812.45:386:00
2912.45:386:00
3012.45:396:01
3112.45:396:01

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 4.97 kWh/m² to a high of 6.82 kWh/m² in September across the year — December's 5.7 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.4Bright
295.4Bright
305.4Bright
315.3Bright
Planning a trip in December

Hazard calendar for Valença do Piauí

In seasonPeak

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

Valença do Piauí's monsoon runs January–April, 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 Valença do Piauí?

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

3.1
Sightseeing
8th-best month of the year
5.8
Beach & pool
6th-best month of the year

December is a weaker month for outdoor sightseeing in Valença do Piauí.

What to pack for Valença do Piauí in December

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

In December, Valença do Piauí sees daytime highs around 34°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Valença do Piauí 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 Valença do Piauí peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 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 11UV 15Jul 17UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Valença do Piauí?

Valença do Piauí sits at 6.4°S, 41.7°W, 336 m above sea level, in Brazil. The nearest listed city is Picos, 81 km away.

Topography around Valença do Piauí

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

Within 3 km, the terrain around Valença do Piauí has only modest variations in elevation — a maximum elevation change of 112 m around an average of 334 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 322 m; within 80 km, large variations in elevation — a maximum elevation change of 609 m.

The land around Valença do Piauí is covered by trees (49%) and shrubs (27%) within 3 km, trees (64%) and shrubs (33%) within 16 km, and trees (46%) and shrubs (45%) within 80 km.

3 km
112 m
16 km
322 m
80 km
609 m
treesshrubsgrasslandcroplandartificial surfaces
December weather nearby: Picos 81 km · Oeiras 81 km · Regeneração 106 km · São Miguel do Tapuio 111 km · Água Branca 114 km · Parambu 118 km · Castelo do Piauí 123 km · Amarante 123 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 Valença do Piauí (-6.4075°, -41.7456°, elevation 336 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).