Meruoca weather in December

In December, Meruoca sees average daytime highs of 33°C and overnight lows near 24°C, with 58 mm of rain across 10.5 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 33°C through the month. The sky is clear or mostly clear about 25% of the time in December, and the air most often feels muggy.

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 Meruoca's 7th-clearest and 5th-windiest month. For the whole year in context, see Meruoca's year-round climate.

Daytime high
33°
4th warmest
Overnight low
24°
12th coldest
Rainfall
58 mm
10.5 wet days
Daylight
12 h 12 min
5:32 AM – 5:44 PM
Cloud cover
60%
7th clearest
Wind
11 km/h
5th windiest
Solar energy
5.9 kWh/m²
Travel score
3.4
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical December day in Meruoca reaches about 33°C in the afternoon and slips back to 24°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 35°C. Set against its neighbours, December runs about 1°C cooler than November and about 2°C warmer than January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13424
23424
33424
43424
53424
63424
73324
83324
93324
103324
113324
123324
133324
143324
153324
163324
173324
183324
193324
203324
213324
223324
233324
243323
253323
263323
273223
283223
293223
303223
313223

How December really feels in Meruoca

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.

Meruoca 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° / 23°20521.712.23.1
Feb30° / 23°25523.912.13.0
Mar30° / 23°37228.5122.9
Apr30° / 23°37026.811.93.0
May30° / 22°17420.911.83.7
Jun30° / 22°611211.84.7
Jul31° / 22°326.711.85.0
Aug33° / 22°122.611.94.6
Sep34° / 23°41.3124.0
Oct34° / 23°8212.13.6
Nov34° / 24°123.212.23.5
Dec33° / 24°5810.512.23.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 26% of December, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65842
75743
85743
95743
105644
115644
125644
135644
145545
155446
165446
175248
185248
195149
205050
214951
224852
234852
244753
254555
264456
274456
284357
294357
304159
314060

Chance of precipitation in December

Any precipitation

Meruoca gets around 58 mm of rain over 10.5 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 55% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
116
217
317
418
519
620
722
823
924
1025
1127
1228
1330
1431
1533
1634
1736
1837
1939
2040
2141
2242
2344
2445
2546
2647
2749
2850
2952
3053
3155

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
128315
228216
328117
418118
517920
617821
717722
817524
917326
1017128
1116930
1216831
1316633
1416435
1516237
1616039
1705941
1805743
1905545
2005347
2105149
2204951
2304753
2404654
2504456
2604258
2704060
2803961
2903763
3003565
3103466

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 5:26 AM to 5:39 AM, and sunset from 5:37 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:265:37
212.25:265:38
312.25:275:38
412.25:275:39
512.25:275:39
612.25:285:39
712.25:285:40
812.25:285:40
912.25:295:41
1012.25:295:41
1112.25:305:42
1212.25:305:42
1312.25:315:43
1412.25:315:43
1512.25:315:44
1612.25:325:44
1712.25:325:45
1812.25:335:45
1912.25:335:46
2012.25:345:46
2112.25:345:46
2212.25:355:47
2312.25:355:47
2412.25:365:48
2512.25:365:48
2612.25:375:49
2712.25:375:49
2812.25:375:50
2912.25:385:50
3012.25:385:51
3112.25:395:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.9 kWh/m².

For context, solar energy here swings from a low near 4.72 kWh/m² to a high of 6.77 kWh/m² in September across the year — December's 5.9 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.0Intense
106.0Intense
116.0Intense
126.0Bright
136.0Bright
145.9Bright
155.9Bright
165.9Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in December

Hazard calendar for Meruoca

In seasonPeak

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

Meruoca'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 Meruoca?

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

3.4
Sightseeing
8th-best month of the year
6.1
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Meruoca. The water and warmth also suit a beach or pool day.

What to pack for Meruoca in December

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

In December, Meruoca sees daytime highs around 33°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Meruoca 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 Meruoca peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Jun 22UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme

Air quality in Meruoca 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 Meruoca is worst in December — around 17 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (July, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateDec 1017 µg/m³Jul 216 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb13Moderate
Mar12Moderate
Apr12Good
May10Good
Jun7Good
Jul6Good
Aug6Good
Sep7Good
Oct10Good
Nov17Moderate
Dec17Moderate
Location & terrain

Where is Meruoca?

Meruoca sits at 3.5°S, 40.5°W, 668 m above sea level, in Brazil. The nearest listed city is Massapê, 13 km away.

Topography around Meruoca

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

Within 3 km, the terrain around Meruoca has significant variations in elevation — a maximum elevation change of 521 m around an average of 729 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 956 m; within 80 km, large variations in elevation — a maximum elevation change of 1,010 m.

The land around Meruoca is covered by trees (96%) within 3 km, trees (54%) and shrubs (33%) within 16 km, and shrubs (49%), trees (27%) and grassland (22%) within 80 km.

3 km
521 m
16 km
956 m
80 km
1,010 m
treesshrubsgrasslandartificial surfaceswater
December weather nearby: Massapê 13 km · Sobral 20 km · Coreaú 22 km · Santana do Acaraú 28 km · Forquilha 36 km · Cariré 46 km · Frecheirinha 47 km · Morrinhos 50 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 Meruoca (-3.5417°, -40.455°, elevation 668 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).