Serra weather in December

In December, Serra sees average daytime highs of 27°C and overnight lows near 24°C, with 156 mm of rain across 14.6 wet days and about 13.2 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°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 13 h 06 min at the start of December to 13 h 12 min by month's end. Set against the rest of the year, December is Serra's 11th-clearest and 5th-windiest month. For the whole year in context, see Serra's year-round climate.

Daytime high
27°
4th warmest
Overnight low
24°
9th coldest
Rainfall
156 mm
14.6 wet days
Daylight
13 h 12 min
6:01 AM – 7:14 PM
Cloud cover
69%
11th clearest
Wind
16 km/h
5th windiest
Solar energy
5.86 kWh/m²
Travel score
5.7
out of 10

Serra is human settlement in Brazil.

Air quality
Good
PM10 17.8 µg/m³ · 2019

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 27°C through the month.

A typical December day in Serra reaches about 27°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12723
22723
32723
42723
52723
62723
72723
82723
92723
102723
112723
122723
132724
142724
152724
162724
172724
182724
192724
202724
212724
222724
232824
242824
252824
262824
272824
282824
292824
302824
312824

Serra weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°1001213.16.0
Feb28° / 24°6811.512.75.6
Mar28° / 24°12215.812.15.4
Apr27° / 23°8613.811.66.1
May26° / 22°6010.511.16.9
Jun25° / 21°347.710.87.6
Jul24° / 20°419.210.97.5
Aug24° / 20°418.911.37.5
Sep25° / 21°5010.111.97.0
Oct25° / 22°9310.912.56.6
Nov26° / 23°17715.3135.6
Dec27° / 24°15614.613.25.7

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 13% of December, with mostly cloudy or overcast conditions the remaining 65%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
22971
32971
42971
52971
63070
73070
83070
93070
103169
113169
123268
133367
143466
153466
163565
173565
183763
193862
203862
213961
224060
234060
244060
254159
264159
274159
284159
294060
304060
314060

Chance of precipitation in December

Any precipitation

Serra gets around 156 mm of rain over 14.6 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 47% and peaks near 53% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
152
252
352
453
553
653
753
852
952
1051
1151
1250
1349
1448
1547
1647
1746
1845
1944
2044
2143
2242
2342
2441
2541
2641
2741
2841
2941
3041
3141

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 86% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1423721
2322741
3321742
4320752
5319762
6218782
7217792
8216802
9215812
10214822
11213832
12112852
13111862
14110872
1519882
1619891
1718901
1818901
1917911
2017911
2106931
2206931
2306931
2406931
2506931
2606931
2706922
2806922
2906922
3007903
3107903

Wind in December

Winds average 16 km/h in December.

Across December, daily wind ranges from about 16 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
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 06 min at the start of December to 13 h 12 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 5:57 AM to 6:08 AM, and sunset from 7:05 PM to 7:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:577:05
213.15:577:06
313.15:577:06
413.25:587:07
513.25:587:07
613.25:587:08
713.25:587:09
813.25:587:09
913.25:597:10
1013.25:597:10
1113.25:597:11
1213.26:007:12
1313.26:007:12
1413.26:007:13
1513.26:017:13
1613.26:017:14
1713.26:017:14
1813.26:027:15
1913.26:027:15
2013.26:037:16
2113.26:037:16
2213.26:047:17
2313.26:047:17
2413.26:057:18
2513.26:057:18
2613.26:067:19
2713.26:067:19
2813.26:077:19
2913.26:077:20
3013.26:087:20
3113.26:087:20

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.86 kWh/m².

For context, solar energy here swings from a low near 3.64 kWh/m² to a high of 6.39 kWh/m² in February across the year — December's 5.86 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.7Bright
115.7Bright
125.7Bright
135.8Bright
145.8Bright
155.8Bright
165.9Bright
175.9Bright
185.9Bright
196.0Bright
206.0Intense
216.0Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in December

Hazard calendar for Serra

In seasonPeak

In December, Serra sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Serra's rainy season runs October–January, 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 Serra?

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

5.7
Sightseeing
9th-best month of the year
5.9
Beach & pool
11th-best month of the year

December is a reasonable time to visit Serra for sightseeing.

What to pack for Serra in December

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

In December, Serra sees daytime highs around 27°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

Sea temperature near Serra in December

The nearest coast averages about 25°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 19 km away) is warmest in March at about 27°C and coldest in August near 23°C.

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

22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb27Warm
Mar27Warm
Apr27Warm
May25Warm
Jun24Warm
Jul23Refreshing
Aug23Refreshing
Sep23Refreshing
Oct24Refreshing
Nov25Warm
Dec25Warm

UV index in Serra in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Serra peaks around February 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 12UV 14Jun 20UV 6
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul7High
Aug8Very high
Sep10Very high
Oct12Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Serra?

Serra sits at 20.1°S, 40.3°W, 57 m above sea level, in Brazil. The nearest listed city is Cariacica, 19 km away.

Topography around Serra

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

Within 3 km, the terrain around Serra has significant variations in elevation — a maximum elevation change of 439 m around an average of 63 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 800 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,872 m.

The land around Serra is covered by trees (43%), grassland (35%) and artificial surfaces (21%) within 3 km, trees (44%) and grassland (31%) within 16 km, and trees (42%), water (30%) and grassland (25%) within 80 km.

3 km
439 m
16 km
800 m
80 km
1,872 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Cariacica 19 km · Vitória 21 km · Vila Velha 22 km · Fundão 24 km · Aracruz 34 km · Viana 35 km · Santa Teresa 37 km · Domingos Martins 45 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 Serra (-20.1286°, -40.3078°, elevation 57 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).