Rio Real weather in December

In December, Rio Real sees average daytime highs of 32°C and overnight lows near 23°C, with 34 mm of rain across 7.9 wet days and about 12.7 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 30% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of December to 12 h 42 min by month's end. Set against the rest of the year, December is Rio Real's 12th-clearest and 3rd-windiest month. For the whole year in context, see Rio Real's year-round climate.

Daytime high: 32°; 4th warmest
Overnight low: 23°; 9th coldest
Rainfall: 34 mm; 7.9 wet days
Daylight: 12 h 42 min; 5:08 AM – 5:48 PM
Cloud cover: 58%; 12th clearest
Wind: 12 km/h; 3rd windiest
Solar energy: 6.12 kWh/m²
Travel score: 4.3; out of 10

Rio Real is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← November Rio Real year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical December day in Rio Real reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32
Avg low (°C)	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23

	Avg high (°C)	Avg low (°C)
1	32	23
2	32	23
3	32	23
4	32	23
5	32	23
6	32	23
7	32	23
8	32	23
9	32	23
10	32	23
11	32	23
12	32	23
13	32	23
14	32	23
15	32	23
16	32	23
17	32	23
18	32	23
19	32	23
20	32	23
21	32	23
22	32	23
23	32	23
24	32	23
25	32	23
26	32	23
27	32	23
28	32	23
29	32	23
30	32	23
31	32	23

How December really feels in Rio Real

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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Rio Real weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	32° / 23°	49	10.5	12.6	4.0
Feb	32° / 23°	45	12.1	12.4	3.7
Mar	32° / 23°	49	13.5	12.1	3.7
Apr	31° / 23°	66	16.1	11.8	4.0
May	29° / 22°	77	18.4	11.5	4.6
Jun	27° / 21°	71	20	11.3	5.0
Jul	27° / 20°	56	18.7	11.4	5.4
Aug	27° / 19°	46	16.3	11.6	5.7
Sep	28° / 20°	36	12.7	11.9	5.6
Oct	30° / 21°	30	9.1	12.3	5.2
Nov	31° / 22°	38	8.5	12.5	4.6
Dec	32° / 23°	34	7.9	12.7	4.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 26% of December, with mostly cloudy or overcast conditions the remaining 45%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	54	54	55	56	56	56	57	57	57	57	56	57	57	57	57	57	57	56	55	55	55	55	55	54	54	54	54	53	53	53	53
Cloudier (%)	46	46	45	44	44	44	43	43	43	43	44	43	43	43	43	43	43	44	45	45	45	45	45	46	46	46	46	47	47	47	47

	Clearer (%)	Cloudier (%)
1	54	46
2	54	46
3	55	45
4	56	44
5	56	44
6	56	44
7	57	43
8	57	43
9	57	43
10	57	43
11	56	44
12	57	43
13	57	43
14	57	43
15	57	43
16	57	43
17	57	43
18	56	44
19	55	45
20	55	45
21	55	45
22	55	45
23	55	45
24	54	46
25	54	46
26	54	46
27	54	46
28	53	47
29	53	47
30	53	47
31	53	47

Chance of precipitation in December

Any precipitation

Rio Real gets around 34 mm of rain over 7.9 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 26% and peaks near 28% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	26	25	24	24	24	23	24	24	24	25	25	26	26	27	27	27	28	28	28	28	28	27	27	27	27	27	27	27	27	27	28

	Rain chance (%)
1	26
2	25
3	24
4	24
5	24
6	23
7	24
8	24
9	24
10	25
11	25
12	26
13	26
14	27
15	27
16	27
17	28
18	28
19	28
20	28
21	28
22	27
23	27
24	27
25	27
26	27
27	27
28	27
29	27
30	27
31	28

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 56% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Muggy (%)	49	49	48	47	47	46	46	45	45	44	44	44	44	44	43	43	43	43	43	43	43	43	43	42	42	42	42	41	41	41	40
Oppressive (%)	51	51	52	53	53	54	54	55	55	56	56	56	56	56	57	57	57	57	57	57	57	57	57	58	58	58	58	59	59	59	60

	Muggy (%)	Oppressive (%)
1	49	51
2	49	51
3	48	52
4	47	53
5	47	53
6	46	54
7	46	54
8	45	55
9	45	55
10	44	56
11	44	56
12	44	56
13	44	56
14	44	56
15	43	57
16	43	57
17	43	57
18	43	57
19	43	57
20	43	57
21	43	57
22	43	57
23	43	57
24	42	58
25	42	58
26	42	58
27	42	58
28	41	59
29	41	59
30	41	59
31	40	60

Wind in December

Winds average 12 km/h in December.

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

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	12	light breeze
2	12	light breeze
3	12	light breeze
4	12	light breeze
5	12	light breeze
6	12	light breeze
7	12	light breeze
8	12	light breeze
9	12	light breeze
10	12	light breeze
11	12	light breeze
12	12	light breeze
13	12	light breeze
14	12	light breeze
15	12	light breeze
16	12	light breeze
17	12	light breeze
18	12	calm
19	12	calm
20	12	calm
21	12	calm
22	12	calm
23	12	calm
24	12	calm
25	12	calm
26	12	calm
27	12	calm
28	12	calm
29	12	calm
30	12	calm
31	12	calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 36 min at the start of December to 12 h 42 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 5:03 AM to 5:15 AM, and sunset from 5:40 PM to 5:55 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7	12.7
Sunrise (AM)	5:03	5:03	5:03	5:04	5:04	5:04	5:04	5:05	5:05	5:05	5:06	5:06	5:07	5:07	5:07	5:08	5:08	5:09	5:09	5:10	5:10	5:10	5:11	5:11	5:12	5:12	5:13	5:13	5:14	5:14	5:15
Sunset (PM)	5:40	5:41	5:41	5:42	5:42	5:43	5:43	5:44	5:44	5:45	5:45	5:46	5:46	5:47	5:47	5:48	5:48	5:49	5:49	5:50	5:50	5:51	5:51	5:52	5:52	5:53	5:53	5:54	5:54	5:54	5:55

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.6	5:03	5:40
2	12.6	5:03	5:41
3	12.6	5:03	5:41
4	12.6	5:04	5:42
5	12.6	5:04	5:42
6	12.6	5:04	5:43
7	12.6	5:04	5:43
8	12.7	5:05	5:44
9	12.7	5:05	5:44
10	12.7	5:05	5:45
11	12.7	5:06	5:45
12	12.7	5:06	5:46
13	12.7	5:07	5:46
14	12.7	5:07	5:47
15	12.7	5:07	5:47
16	12.7	5:08	5:48
17	12.7	5:08	5:48
18	12.7	5:09	5:49
19	12.7	5:09	5:49
20	12.7	5:10	5:50
21	12.7	5:10	5:50
22	12.7	5:10	5:51
23	12.7	5:11	5:51
24	12.7	5:11	5:52
25	12.7	5:12	5:52
26	12.7	5:12	5:53
27	12.7	5:13	5:53
28	12.7	5:13	5:54
29	12.7	5:14	5:54
30	12.7	5:14	5:54
31	12.7	5:15	5:55

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.12 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.66 kWh/m² to a high of 6.12 kWh/m² in December across the year — December's 6.12 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1	6.1
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	6.1	Intense
2	6.1	Intense
3	6.1	Intense
4	6.1	Intense
5	6.1	Intense
6	6.1	Intense
7	6.1	Intense
8	6.1	Intense
9	6.1	Intense
10	6.1	Intense
11	6.1	Intense
12	6.1	Intense
13	6.1	Intense
14	6.1	Intense
15	6.1	Intense
16	6.1	Intense
17	6.1	Intense
18	6.1	Intense
19	6.1	Intense
20	6.1	Intense
21	6.1	Intense
22	6.1	Intense
23	6.1	Intense
24	6.1	Intense
25	6.1	Intense
26	6.1	Intense
27	6.1	Intense
28	6.1	Intense
29	6.1	Intense
30	6.1	Intense
31	6.1	Intense

Planning a trip in December

Is December a good time to visit Rio Real?

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

4.3

Sightseeing

8th-best month of the year

6.7

Beach & pool

3rd-best month of the year

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

What to pack for Rio Real in December

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

In December, Rio Real sees daytime highs around 32°C and nights near 23°C. Pack light clothes and sun protection. About 8 days see rain.

light clothessun protection

Sea temperature near Rio Real in December

The nearest coast averages about 27°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 62 km away) is warmest in April at about 28°C and coldest in August near 26°C.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	27	28	28	28	28	27	26	26	26	26	26	27
Comfort	Warm	Warm	Tropical	Tropical	Warm	Warm	Warm	Warm	Warm	Warm	Warm	Warm

	Sea temperature (°C)	Comfort
Jan	27	Warm
Feb	28	Warm
Mar	28	Tropical
Apr	28	Tropical
May	28	Warm
Jun	27	Warm
Jul	26	Warm
Aug	26	Warm
Sep	26	Warm
Oct	26	Warm
Nov	26	Warm
Dec	27	Warm

UV index in Rio Real 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 Rio Real peaks around February 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 9 (very high).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	14	15	14	13	10	9	9	10	12	13	13	13
Level	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Very high	Very high	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	15	Extreme
Mar	14	Extreme
Apr	13	Extreme
May	10	Very high
Jun	9	Very high
Jul	9	Very high
Aug	10	Very high
Sep	12	Extreme
Oct	13	Extreme
Nov	13	Extreme
Dec	13	Extreme

Location & terrain

Where is Rio Real?

Rio Real sits at 11.5°S, 37.9°W, 170 m above sea level, in Brazil. The nearest listed city is Cristinápolis, 19 km away.

Topography around Rio Real

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

Within 3 km, the terrain around Rio Real has only modest variations in elevation — a maximum elevation change of 59 m around an average of 175 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 243 m; within 80 km, large variations in elevation — a maximum elevation change of 617 m.

The land around Rio Real is covered by grassland (59%) within 3 km, grassland (71%) within 16 km, and grassland (52%) and trees (24%) within 80 km.

3 km

59 m

grassland 59%

16 km

243 m

grassland 71%

80 km

617 m

grassland 52%

treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves

← November Rio Real year-round climate January →Best places to visit in December

December weather nearby: Cristinápolis 19 km · Crisópolis 24 km · Aporá 25 km · Itabaianinha 28 km · Umbaúba 32 km · Tobias Barreto 34 km · Esplanada 35 km · Itapicuru 38 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

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 Rio Real (-11.4847°, -37.9328°, elevation 170 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).

	Avg high (°C)	Avg low (°C)
1	32	23
2	32	23
3	32	23
4	32	23
5	32	23
6	32	23
7	32	23
8	32	23
9	32	23
10	32	23
11	32	23
12	32	23
13	32	23
14	32	23
15	32	23
16	32	23
17	32	23
18	32	23
19	32	23
20	32	23
21	32	23
22	32	23
23	32	23
24	32	23
25	32	23
26	32	23
27	32	23
28	32	23
29	32	23
30	32	23
31	32	23

	Clearer (%)	Cloudier (%)
1	54	46
2	54	46
3	55	45
4	56	44
5	56	44
6	56	44
7	57	43
8	57	43
9	57	43
10	57	43
11	56	44
12	57	43
13	57	43
14	57	43
15	57	43
16	57	43
17	57	43
18	56	44
19	55	45
20	55	45
21	55	45
22	55	45
23	55	45
24	54	46
25	54	46
26	54	46
27	54	46
28	53	47
29	53	47
30	53	47
31	53	47

	Rain chance (%)
1	26
2	25
3	24
4	24
5	24
6	23
7	24
8	24
9	24
10	25
11	25
12	26
13	26
14	27
15	27
16	27
17	28
18	28
19	28
20	28
21	28
22	27
23	27
24	27
25	27
26	27
27	27
28	27
29	27
30	27
31	28

	Muggy (%)	Oppressive (%)
1	49	51
2	49	51
3	48	52
4	47	53
5	47	53
6	46	54
7	46	54
8	45	55
9	45	55
10	44	56
11	44	56
12	44	56
13	44	56
14	44	56
15	43	57
16	43	57
17	43	57
18	43	57
19	43	57
20	43	57
21	43	57
22	43	57
23	43	57
24	42	58
25	42	58
26	42	58
27	42	58
28	41	59
29	41	59
30	41	59
31	40	60

	Avg high (°C)	Avg low (°C)
1	32	23
2	32	23
3	32	23
4	32	23
5	32	23
6	32	23
7	32	23
8	32	23
9	32	23
10	32	23
11	32	23
12	32	23
13	32	23
14	32	23
15	32	23
16	32	23
17	32	23
18	32	23
19	32	23
20	32	23
21	32	23
22	32	23
23	32	23
24	32	23
25	32	23
26	32	23
27	32	23
28	32	23
29	32	23
30	32	23
31	32	23

	Clearer (%)	Cloudier (%)
1	54	46
2	54	46
3	55	45
4	56	44
5	56	44
6	56	44
7	57	43
8	57	43
9	57	43
10	57	43
11	56	44
12	57	43
13	57	43
14	57	43
15	57	43
16	57	43
17	57	43
18	56	44
19	55	45
20	55	45
21	55	45
22	55	45
23	55	45
24	54	46
25	54	46
26	54	46
27	54	46
28	53	47
29	53	47
30	53	47
31	53	47

	Rain chance (%)
1	26
2	25
3	24
4	24
5	24
6	23
7	24
8	24
9	24
10	25
11	25
12	26
13	26
14	27
15	27
16	27
17	28
18	28
19	28
20	28
21	28
22	27
23	27
24	27
25	27
26	27
27	27
28	27
29	27
30	27
31	28

	Muggy (%)	Oppressive (%)
1	49	51
2	49	51
3	48	52
4	47	53
5	47	53
6	46	54
7	46	54
8	45	55
9	45	55
10	44	56
11	44	56
12	44	56
13	44	56
14	44	56
15	43	57
16	43	57
17	43	57
18	43	57
19	43	57
20	43	57
21	43	57
22	43	57
23	43	57
24	42	58
25	42	58
26	42	58
27	42	58
28	41	59
29	41	59
30	41	59
31	40	60

	Avg high (°C)	Avg low (°C)
1	32	23
2	32	23
3	32	23
4	32	23
5	32	23
6	32	23
7	32	23
8	32	23
9	32	23
10	32	23
11	32	23
12	32	23
13	32	23
14	32	23
15	32	23
16	32	23
17	32	23
18	32	23
19	32	23
20	32	23
21	32	23
22	32	23
23	32	23
24	32	23
25	32	23
26	32	23
27	32	23
28	32	23
29	32	23
30	32	23
31	32	23

	Clearer (%)	Cloudier (%)
1	54	46
2	54	46
3	55	45
4	56	44
5	56	44
6	56	44
7	57	43
8	57	43
9	57	43
10	57	43
11	56	44
12	57	43
13	57	43
14	57	43
15	57	43
16	57	43
17	57	43
18	56	44
19	55	45
20	55	45
21	55	45
22	55	45
23	55	45
24	54	46
25	54	46
26	54	46
27	54	46
28	53	47
29	53	47
30	53	47
31	53	47

	Rain chance (%)
1	26
2	25
3	24
4	24
5	24
6	23
7	24
8	24
9	24
10	25
11	25
12	26
13	26
14	27
15	27
16	27
17	28
18	28
19	28
20	28
21	28
22	27
23	27
24	27
25	27
26	27
27	27
28	27
29	27
30	27
31	28

	Muggy (%)	Oppressive (%)
1	49	51
2	49	51
3	48	52
4	47	53
5	47	53
6	46	54
7	46	54
8	45	55
9	45	55
10	44	56
11	44	56
12	44	56
13	44	56
14	44	56
15	43	57
16	43	57
17	43	57
18	43	57
19	43	57
20	43	57
21	43	57
22	43	57
23	43	57
24	42	58
25	42	58
26	42	58
27	42	58
28	41	59
29	41	59
30	41	59
31	40	60