Registro weather in December

In December, Registro sees average daytime highs of 30°C and overnight lows near 22°C, with 144 mm of rain across 17.3 wet days and about 13.5 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 29°C in the first days to 31°C by the end. The sky is clear or mostly clear about 11% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 13 h 24 min at the start of December to 13 h 30 min by month's end. Set against the rest of the year, December is Registro's 9th-clearest and 4th-windiest month. For the whole year in context, see Registro's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
22°
9th coldest
Rainfall
144 mm
17.3 wet days
Daylight
13 h 30 min
6:22 AM – 7:53 PM
Cloud cover
74%
9th clearest
Wind
6 km/h
4th windiest
Solar energy
5.42 kWh/m²
Travel score
3.8
out of 10

Registro 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 climb over the month, from about 29°C in the first days to 31°C by the end.

A typical December day in Registro reaches about 30°C in the afternoon and slips back to 22°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 35°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
12921
22921
33021
43021
53021
63021
73021
83021
93021
103021
113021
123022
133022
143022
153022
163022
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122
313122

How December really feels in Registro

Once humidity and wind are folded in, December averages 25 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
25
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.

Registro weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°2202213.33.2
Feb31° / 23°1932012.93.3
Mar30° / 22°1482012.23.9
Apr28° / 20°7812.711.45.5
May25° / 17°7910.610.86.6
Jun24° / 15°647.910.57.2
Jul24° / 15°648.110.67.2
Aug24° / 15°517.711.17.2
Sep25° / 17°9111.611.86.3
Oct27° / 19°9313.912.65.6
Nov28° / 20°10515.213.24.9
Dec30° / 22°14417.313.53.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22674
32674
42674
52674
62674
72575
82575
92575
102575
112674
122674
132674
142872
152872
162971
172971
182971
192971
203070
213070
222971
232971
242971
252872
262872
272674
282674
292476
302476
312476

Chance of precipitation in December

Any precipitation

Registro gets around 144 mm of rain over 17.3 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 57% and peaks near 66% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
152
253
353
454
554
654
754
855
955
1055
1155
1255
1355
1455
1555
1655
1755
1856
1956
2056
2156
2257
2357
2458
2560
2661
2762
2863
2964
3065
3166

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 53% of days. Sticky, muggy-or-worse air turns up on roughly 90% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
121741391
211641401
311640411
411540432
511439442
611439452
711338472
811337482
911236492
1001136512
1101135522
1201034533
1301034533
140933553
150932554
160831574
170830575
180830575
190829576
200728587
210727588
220727588
230626599
2406255910
2505246011
2605236012
2704236013
2804226014
2904216015
3004215916
3103206017

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 24 min at the start of December to 13 h 30 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 6:19 AM to 6:30 AM, and sunset from 7:43 PM to 7:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:197:43
213.46:197:44
313.46:197:45
413.46:197:45
513.46:197:46
613.56:197:47
713.56:207:47
813.56:207:48
913.56:207:49
1013.56:207:49
1113.56:217:50
1213.56:217:51
1313.56:217:51
1413.56:227:52
1513.56:227:52
1613.56:227:53
1713.56:237:53
1813.56:237:54
1913.56:237:54
2013.56:247:55
2113.56:247:55
2213.56:257:56
2313.56:257:56
2413.56:267:57
2513.56:267:57
2613.56:277:58
2713.56:277:58
2813.56:287:58
2913.56:287:59
3013.56:297:59
3113.56:307:59

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.42 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.77 kWh/m² to a high of 5.42 kWh/m² in December across the year — December's 5.42 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.4Bright
315.4Bright
Planning a trip in December

Hazard calendar for Registro

In seasonPeak

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

Registro's rainy season runs November–March, 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 Registro?

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

3.8
Sightseeing
10th-best month of the year
5.4
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Registro.

What to pack for Registro in December

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

In December, Registro sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Registro 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 48 km away) is warmest in February at about 27°C and coldest in August near 19°C.

It's comfortable for a long swim from Sep 6 to Jul 12 — about 10.2 months when the water holds above 20°C.

20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr26Warm
May23Refreshing
Jun21Refreshing
Jul20Cool
Aug19Cool
Sep20Refreshing
Oct22Refreshing
Nov23Refreshing
Dec25Warm

UV index in Registro 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 Registro peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 19UV 14Jul 11UV 5
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar11Extreme
Apr8Very high
May6High
Jun5High
Jul5High
Aug7Very high
Sep8Very high
Oct10Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Registro?

Registro sits at 24.5°S, 47.8°W, 17 m above sea level, in Brazil. The nearest listed city is Pariquera-Açu, 26 km away.

Topography around Registro

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

Within 3 km, the terrain around Registro has only modest variations in elevation — a maximum elevation change of 78 m around an average of 18 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 403 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,480 m.

The land around Registro is covered by trees (51%), grassland (23%) and artificial surfaces (20%) within 3 km, trees (78%) within 16 km, and trees (74%) within 80 km.

3 km
78 m
16 km
403 m
80 km
1,480 m
treesgrasslandcroplandartificial surfaceswatermangroves
December weather nearby: Pariquera-Açu 26 km · Jacupiranga 28 km · Juquiá 28 km · Iguape 38 km · Cajati 40 km · Miracatu 45 km · São Miguel Arcanjo 70 km · Itariri 71 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 Registro (-24.4875°, -47.8436°, elevation 17 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).