Magé weather in December

In December, Magé sees average daytime highs of 30°C and overnight lows near 23°C, with 230 mm of rain across 20.1 wet days and about 13.4 hours of daylight. It is the 4th-warmest and 2nd-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 16% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 13 h 18 min at the start of December to 13 h 24 min by month's end. Set against the rest of the year, December is Magé's 11th-clearest and 5th-windiest month. For the whole year in context, see Magé's year-round climate.

Daytime high
30°
4th warmest
Overnight low
23°
9th coldest
Rainfall
230 mm
20.1 wet days
Daylight
13 h 24 min
6:07 AM – 7:30 PM
Cloud cover
71%
11th clearest
Wind
6 km/h
5th windiest
Solar energy
5.69 kWh/m²
Travel score
3.8
out of 10

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 Magé reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 34°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
12922
22922
32922
42922
52922
62922
72922
83022
93022
103022
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233123
243123
253123
263123
273123
283123
293123
303123
313123

How December really feels in Magé

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.

Magé 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
Jan31° / 24°24420.413.23.3
Feb32° / 24°1801712.83.4
Mar30° / 23°20519.712.23.8
Apr29° / 21°10113.111.55.3
May26° / 19°7510.510.96.7
Jun26° / 18°477.110.67.3
Jul26° / 17°497.210.87.5
Aug26° / 17°447.211.27.3
Sep27° / 19°8510.811.96.4
Oct28° / 20°11413.312.55.5
Nov28° / 21°2041813.14.5
Dec30° / 23°23020.113.43.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% 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 69%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
22971
32971
42872
52872
62773
72872
82872
92872
102872
112971
123070
133169
143169
153169
163268
173268
183367
193466
203466
213565
223565
233565
243565
253565
263466
273367
283367
293268
303169
313169

Chance of precipitation in December

Any precipitation

Magé gets around 230 mm of rain over 20.1 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 65% and peaks near 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
161
261
361
461
561
661
761
861
961
1062
1162
1262
1363
1463
1563
1664
1764
1865
1965
2066
2166
2267
2367
2468
2569
2669
2770
2870
2971
3071
3170

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 70% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1835561
2734581
3733582
4632602
5632602
6531622
7530632
8429643
9428653
10427663
11326683
12325684
13224704
14223714
15222715
16221725
17220735
18219745
19118756
20117766
21116776
22116776
23115777
24114787
25113797
26113788
27112798
28112789
291127710
301127710
311127611

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 18 min at the start of December to 13 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 6:03 AM to 6:14 AM, and sunset from 7:21 PM to 7:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:037:21
213.36:037:21
313.36:037:22
413.36:047:23
513.36:047:23
613.36:047:24
713.36:047:24
813.36:047:25
913.46:057:26
1013.46:057:26
1113.46:057:27
1213.46:057:28
1313.46:067:28
1413.46:067:29
1513.46:077:29
1613.46:077:30
1713.46:077:30
1813.46:087:31
1913.46:087:31
2013.46:097:32
2113.46:097:32
2213.46:097:33
2313.46:107:33
2413.46:107:34
2513.46:117:34
2613.46:117:35
2713.46:127:35
2813.46:127:35
2913.46:137:36
3013.46:147:36
3113.46:147:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.69 kWh/m².

For context, solar energy here swings from a low near 3.37 kWh/m² to a high of 5.98 kWh/m² in February across the year — December's 5.69 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in December

Hazard calendar for Magé

In seasonPeak

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

Magé's rainy season runs October–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 Magé?

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

3.8
Sightseeing
9th-best month of the year
5.2
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Magé.

What to pack for Magé in December

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

In December, Magé sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Magé in December

The nearest coast averages about 24°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 53 km away) is warmest in March at about 25°C and coldest in August near 21°C.

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

20°22°24°26°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar25Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec24Warm

UV index in Magé in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Magé peaks around January 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeJan 13UV 14Jul 13UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May6High
Jun6High
Jul5Moderate
Aug8Very high
Sep6High
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Magé 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 Magé is worst in September — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (March, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1518 µg/m³Mar 1110 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr12Good
May15Moderate
Jun16Moderate
Jul15Moderate
Aug15Moderate
Sep19Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Magé?

Magé sits at 22.7°S, 43.0°W, 8 m above sea level, in Brazil. The nearest listed city is Guapimirim, 14 km away.

Topography around Magé

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

Within 3 km, the terrain around Magé has only modest variations in elevation — a maximum elevation change of 161 m around an average of 17 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,720 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Magé is covered by trees (53%) within 3 km, trees (47%) within 16 km, and trees (43%), grassland (26%) and water (23%) within 80 km.

3 km
161 m
16 km
1,720 m
80 km
2,252 m
treesgrasslandartificial surfaceswaterwetlandmangroves
December weather nearby: Guapimirim 14 km · Itaboraí 21 km · Petrópolis 22 km · Niterói 26 km · São Pedro 27 km · Teresópolis 27 km · Duque de Caxias 31 km · Rio de Janeiro 32 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 Magé (-22.6528°, -43.0406°, elevation 8 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. 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).