Ceará-Mirim weather in December

In December, Ceará-Mirim sees average daytime highs of 31°C and overnight lows near 24°C, with 23 mm of rain across 9.5 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 45% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of December to 12 h 18 min by month's end. Set against the rest of the year, December is Ceará-Mirim's 6th-clearest and 6th-windiest month. For the whole year in context, see Ceará-Mirim's year-round climate.

Daytime high
31°
3rd warmest
Overnight low
24°
12th coldest
Rainfall
23 mm
9.5 wet days
Daylight
12 h 18 min
5:08 AM – 5:28 PM
Cloud cover
49%
6th clearest
Wind
16 km/h
6th windiest
Solar energy
6.26 kWh/m²
Travel score
4.8
out of 10

Ceará-Mirim 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 31°C through the month.

A typical December day in Ceará-Mirim reaches about 31°C in the afternoon and slips back to 24°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 32°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133124
143124
153124
163124
173124
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124
313124

How December really feels in Ceará-Mirim

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.

Ceará-Mirim weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°5114.512.34.2
Feb31° / 24°6415.512.23.9
Mar31° / 24°9920.4123.6
Apr30° / 24°11320.211.93.8
May30° / 23°8515.411.74.6
Jun29° / 22°7514.511.75.2
Jul28° / 22°6112.111.75.8
Aug29° / 22°217.111.86.3
Sep29° / 22°124.6126.2
Oct30° / 23°103.512.15.9
Nov30° / 24°124.712.35.5
Dec31° / 24°239.512.34.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 32%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
27030
37030
47030
57129
67129
77129
87030
97030
107030
117030
126931
137030
146931
156931
166931
176832
186832
196733
206634
216634
226634
236535
246535
256535
266535
276535
286535
296535
306436
316436

Chance of precipitation in December

Any precipitation

Ceará-Mirim gets around 23 mm of rain over 9.5 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 30% and peaks near 36% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
120
221
321
422
523
624
725
826
927
1028
1128
1229
1330
1431
1532
1633
1733
1834
1934
2034
2135
2235
2335
2435
2535
2635
2735
2835
2935
3036
3136

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 77% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
12971
22971
32872
42872
52773
62773
72674
82674
92575
102575
112476
122476
132476
142377
152377
162377
172278
182278
192278
202278
212179
222179
232080
242080
252080
261981
271882
281882
291783
301783
311684

Wind in December

Winds average 16 km/h in December.

Across December, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 18 min at the start of December to 12 h 18 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 5:02 AM to 5:15 AM, and sunset from 5:21 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:025:21
212.35:035:21
312.35:035:21
412.35:035:22
512.35:045:22
612.35:045:23
712.35:045:23
812.35:055:24
912.35:055:24
1012.35:065:25
1112.35:065:25
1212.35:065:26
1312.35:075:26
1412.35:075:27
1512.35:085:27
1612.35:085:28
1712.35:095:28
1812.35:095:29
1912.35:095:29
2012.35:105:30
2112.35:105:30
2212.35:115:30
2312.35:115:31
2412.35:125:31
2512.35:125:32
2612.35:135:32
2712.35:135:33
2812.35:145:33
2912.35:145:34
3012.35:155:34
3112.35:155:35

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.26 kWh/m².

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 6.46 kWh/m² in November across the year — December's 6.26 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in December

Hazard calendar for Ceará-Mirim

In seasonPeak

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

Ceará-Mirim's rainy season runs January–July, 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 Ceará-Mirim?

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

4.8
Sightseeing
7th-best month of the year
6.9
Beach & pool
5th-best month of the year

December is a reasonable time to visit Ceará-Mirim for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Ceará-Mirim in December

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

In December, Ceará-Mirim sees daytime highs around 31°C and nights near 24°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

Sea temperature near Ceará-Mirim 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 29 km away) is warmest in March at about 29°C and coldest in August near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul27Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov27Warm
Dec28Warm

UV index in Ceará-Mirim 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 Ceará-Mirim peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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 15UV 15Jul 12UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Ceará-Mirim?

Ceará-Mirim sits at 5.6°S, 35.4°W, 37 m above sea level, in Brazil. The nearest listed city is Extremoz, 15 km away.

Topography around Ceará-Mirim

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

Within 3 km, the terrain around Ceará-Mirim has only modest variations in elevation — a maximum elevation change of 78 m around an average of 35 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 129 m; within 80 km, significant variations in elevation — a maximum elevation change of 529 m.

The land around Ceará-Mirim is covered by grassland (58%) within 3 km, grassland (51%) and shrubs (31%) within 16 km, and shrubs (32%), water (32%) and grassland (29%) within 80 km.

3 km
78 m
16 km
129 m
80 km
529 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Extremoz 15 km · São Gonçalo do Amarante 21 km · Macaíba 26 km · Natal 30 km · Parnamirim 36 km · João Câmara 45 km · São Paulo do Potengi 47 km · Touros 49 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 Ceará-Mirim (-5.6344°, -35.4256°, elevation 37 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).