Santo Antônio weather in December

In December, Santo Antônio sees average daytime highs of 32°C and overnight lows near 24°C, with 18 mm of rain across 6.8 wet days and about 12.4 hours of daylight. It is the 1st-warmest and 8th-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 42% 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 24 min by month's end. Set against the rest of the year, December is Santo Antônio's 5th-clearest and 7th-windiest month. For the whole year in context, see Santo Antônio's year-round climate.

Daytime high: 32°; 1st warmest
Overnight low: 24°; 9th coldest
Rainfall: 18 mm; 6.8 wet days
Daylight: 12 h 24 min; 5:07 AM – 5:29 PM
Cloud cover: 51%; 5th clearest
Wind: 15 km/h; 7th windiest
Solar energy: 6.11 kWh/m²
Travel score: 4.7; out of 10

Santo Antônio is human settlement in Brazil.

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

← November Santo Antônio 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 Santo Antônio reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, December runs on par with 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)	31	31	32	32	32	32	32	32	32	32	32	32	32	32	32	32	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31
Avg low (°C)	23	23	23	23	23	23	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24

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

How December really feels in Santo Antônio

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.

Santo Antônio weather by month

How December compares with the rest of the year at a glance. December is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	31° / 24°	43	11.7	12.3	4.1
Feb	31° / 24°	53	12.2	12.2	3.9
Mar	31° / 24°	77	16.9	12	3.7
Apr	31° / 23°	88	16	11.9	4.0
May	30° / 23°	62	12.5	11.7	4.8
Jun	29° / 22°	54	11.6	11.6	5.4
Jul	28° / 21°	43	8.8	11.7	6.0
Aug	29° / 21°	16	4.8	11.8	6.2
Sep	30° / 22°	8	2.9	12	6.0
Oct	31° / 23°	7	2	12.1	5.5
Nov	31° / 23°	9	2.9	12.3	5.2
Dec	32° / 24°	18	6.8	12.4	4.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 24% of December, with mostly cloudy or overcast conditions the remaining 35%.

	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 (%)	69	69	69	69	70	70	69	69	69	68	68	67	67	67	66	65	65	65	63	63	63	62	62	61	61	61	61	61	61	61	60
Cloudier (%)	31	31	31	31	30	30	31	31	31	32	32	33	33	33	34	35	35	35	37	37	37	38	38	39	39	39	39	39	39	39	40

	Clearer (%)	Cloudier (%)
1	69	31
2	69	31
3	69	31
4	69	31
5	70	30
6	70	30
7	69	31
8	69	31
9	69	31
10	68	32
11	68	32
12	67	33
13	67	33
14	67	33
15	66	34
16	65	35
17	65	35
18	65	35
19	63	37
20	63	37
21	63	37
22	62	38
23	62	38
24	61	39
25	61	39
26	61	39
27	61	39
28	61	39
29	61	39
30	61	39
31	60	40

Chance of precipitation in December

Any precipitation

Santo Antônio gets around 18 mm of rain over 6.8 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 21% and peaks near 28% on the wettest days. The odds climb toward the end of the month.

	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 (%)	14	15	15	15	16	16	17	17	18	18	19	19	20	20	21	21	22	23	23	24	24	25	25	26	26	27	27	27	27	28	28

	Rain chance (%)
1	14
2	15
3	15
4	15
5	16
6	16
7	17
8	17
9	18
10	18
11	19
12	19
13	20
14	20
15	21
16	21
17	22
18	23
19	23
20	24
21	24
22	25
23	25
24	26
25	26
26	27
27	27
28	27
29	27
30	28
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 (%)	58	57	56	54	53	52	50	49	48	46	45	44	43	43	42	42	41	41	40	40	40	39	39	38	38	37	36	36	35	35	34
Oppressive (%)	42	43	44	46	47	48	50	51	52	54	55	56	57	57	58	58	59	59	60	60	60	61	61	62	62	63	64	64	65	65	66

	Muggy (%)	Oppressive (%)
1	58	42
2	57	43
3	56	44
4	54	46
5	53	47
6	52	48
7	50	50
8	49	51
9	48	52
10	46	54
11	45	55
12	44	56
13	43	57
14	43	57
15	42	58
16	42	58
17	41	59
18	41	59
19	40	60
20	40	60
21	40	60
22	39	61
23	39	61
24	38	62
25	38	62
26	37	63
27	36	64
28	36	64
29	35	65
30	35	65
31	34	66

Wind in December

Winds average 15 km/h in December.

Across December, daily wind ranges from about 14 km/h on the calmest days to 15 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)	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	14	14	14	14	14	14	14
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	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

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

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 18 min at the start of December to 12 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 5:01 AM to 5:14 AM, and sunset from 5:22 PM to 5:36 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)	12.3	12.3	12.3	12.3	12.3	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4
Sunrise (AM)	5:01	5:02	5:02	5:02	5:03	5:03	5:03	5:04	5:04	5:05	5:05	5:05	5:06	5:06	5:07	5:07	5:08	5:08	5:08	5:09	5:09	5:10	5:10	5:11	5:11	5:12	5:12	5:13	5:13	5:14	5:14
Sunset (PM)	5:22	5:22	5:23	5:23	5:24	5:24	5:25	5:25	5:26	5:26	5:27	5:27	5:28	5:28	5:29	5:29	5:29	5:30	5:30	5:31	5:31	5:32	5:32	5:33	5:33	5:34	5:34	5:35	5:35	5:35	5:36

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.3	5:01	5:22
2	12.3	5:02	5:22
3	12.3	5:02	5:23
4	12.3	5:02	5:23
5	12.3	5:03	5:24
6	12.4	5:03	5:24
7	12.4	5:03	5:25
8	12.4	5:04	5:25
9	12.4	5:04	5:26
10	12.4	5:05	5:26
11	12.4	5:05	5:27
12	12.4	5:05	5:27
13	12.4	5:06	5:28
14	12.4	5:06	5:28
15	12.4	5:07	5:29
16	12.4	5:07	5:29
17	12.4	5:08	5:29
18	12.4	5:08	5:30
19	12.4	5:08	5:30
20	12.4	5:09	5:31
21	12.4	5:09	5:31
22	12.4	5:10	5:32
23	12.4	5:10	5:32
24	12.4	5:11	5:33
25	12.4	5:11	5:33
26	12.4	5:12	5:34
27	12.4	5:12	5:34
28	12.4	5:13	5:35
29	12.4	5:13	5:35
30	12.4	5:14	5:35
31	12.4	5:14	5:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.11 kWh/m².

For context, solar energy here swings from a low near 4.3 kWh/m² to a high of 6.26 kWh/m² in November across the year — December's 6.11 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)	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.2	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	6.0	6.0	6.0	6.0	6.0	6.0	6.0	6.0
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	6.2	Intense
2	6.2	Intense
3	6.2	Intense
4	6.2	Intense
5	6.2	Intense
6	6.2	Intense
7	6.2	Intense
8	6.2	Intense
9	6.2	Intense
10	6.2	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	6.0	Intense
25	6.0	Intense
26	6.0	Intense
27	6.0	Intense
28	6.0	Intense
29	6.0	Intense
30	6.0	Intense
31	6.0	Intense

Planning a trip in December

Is December a good time to visit Santo Antônio?

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

4.7

Sightseeing

8th-best month of the year

7.1

Beach & pool

6th-best month of the year

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

What to pack for Santo Antônio in December

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

In December, Santo Antônio sees daytime highs around 32°C and nights near 24°C. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Santo Antônio 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 62 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	28	28	29	29	28	27	27	26	26	27	27	28
Comfort	Tropical	Tropical	Tropical	Tropical	Tropical	Warm	Warm	Warm	Warm	Warm	Warm	Warm

	Sea temperature (°C)	Comfort
Jan	28	Tropical
Feb	28	Tropical
Mar	29	Tropical
Apr	29	Tropical
May	28	Tropical
Jun	27	Warm
Jul	27	Warm
Aug	26	Warm
Sep	26	Warm
Oct	27	Warm
Nov	27	Warm
Dec	28	Warm

UV index in Santo Antônio 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 Santo Antônio peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (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)	13	15	15	14	11	10	10	10	12	12	12	12
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	15	Extreme
Mar	15	Extreme
Apr	14	Extreme
May	11	Extreme
Jun	10	Very high
Jul	10	Very high
Aug	10	Extreme
Sep	12	Extreme
Oct	12	Extreme
Nov	12	Extreme
Dec	12	Extreme

Location & terrain

Where is Santo Antônio?

Santo Antônio sits at 6.3°S, 35.5°W, 93 m above sea level, in Brazil. The nearest listed city is Nova Cruz, 19 km away.

Topography around Santo Antônio

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

Within 3 km, the terrain around Santo Antônio has only modest variations in elevation — a maximum elevation change of 44 m around an average of 89 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 149 m; within 80 km, large variations in elevation — a maximum elevation change of 686 m.

The land around Santo Antônio is covered by grassland (88%) within 3 km, grassland (87%) within 16 km, and grassland (45%) and shrubs (26%) within 80 km.

3 km

44 m

grassland 88%

16 km

149 m

grassland 87%

80 km

686 m

grassland 45%

treesshrubsgrasslandcroplandartificial surfaceswatermangroves

← November Santo Antônio year-round climate January →Best places to visit in December

December weather nearby: Nova Cruz 19 km · Goianinha 30 km · Monte Alegre 31 km · São José de Mipibu 37 km · Nísia Floresta 39 km · Canguaretama 39 km · Araruna 40 km · Belém 43 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 Santo Antônio (-6.3106°, -35.4789°, elevation 93 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	31	23
2	31	23
3	32	23
4	32	23
5	32	23
6	32	23
7	32	24
8	32	24
9	32	24
10	32	24
11	32	24
12	32	24
13	32	24
14	32	24
15	32	24
16	32	24
17	31	24
18	31	24
19	31	24
20	31	24
21	31	24
22	31	24
23	31	24
24	31	24
25	31	24
26	31	24
27	31	24
28	31	24
29	31	24
30	31	24
31	31	24

	Clearer (%)	Cloudier (%)
1	69	31
2	69	31
3	69	31
4	69	31
5	70	30
6	70	30
7	69	31
8	69	31
9	69	31
10	68	32
11	68	32
12	67	33
13	67	33
14	67	33
15	66	34
16	65	35
17	65	35
18	65	35
19	63	37
20	63	37
21	63	37
22	62	38
23	62	38
24	61	39
25	61	39
26	61	39
27	61	39
28	61	39
29	61	39
30	61	39
31	60	40

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

	Muggy (%)	Oppressive (%)
1	58	42
2	57	43
3	56	44
4	54	46
5	53	47
6	52	48
7	50	50
8	49	51
9	48	52
10	46	54
11	45	55
12	44	56
13	43	57
14	43	57
15	42	58
16	42	58
17	41	59
18	41	59
19	40	60
20	40	60
21	40	60
22	39	61
23	39	61
24	38	62
25	38	62
26	37	63
27	36	64
28	36	64
29	35	65
30	35	65
31	34	66

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

	Clearer (%)	Cloudier (%)
1	69	31
2	69	31
3	69	31
4	69	31
5	70	30
6	70	30
7	69	31
8	69	31
9	69	31
10	68	32
11	68	32
12	67	33
13	67	33
14	67	33
15	66	34
16	65	35
17	65	35
18	65	35
19	63	37
20	63	37
21	63	37
22	62	38
23	62	38
24	61	39
25	61	39
26	61	39
27	61	39
28	61	39
29	61	39
30	61	39
31	60	40

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

	Muggy (%)	Oppressive (%)
1	58	42
2	57	43
3	56	44
4	54	46
5	53	47
6	52	48
7	50	50
8	49	51
9	48	52
10	46	54
11	45	55
12	44	56
13	43	57
14	43	57
15	42	58
16	42	58
17	41	59
18	41	59
19	40	60
20	40	60
21	40	60
22	39	61
23	39	61
24	38	62
25	38	62
26	37	63
27	36	64
28	36	64
29	35	65
30	35	65
31	34	66

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

	Clearer (%)	Cloudier (%)
1	69	31
2	69	31
3	69	31
4	69	31
5	70	30
6	70	30
7	69	31
8	69	31
9	69	31
10	68	32
11	68	32
12	67	33
13	67	33
14	67	33
15	66	34
16	65	35
17	65	35
18	65	35
19	63	37
20	63	37
21	63	37
22	62	38
23	62	38
24	61	39
25	61	39
26	61	39
27	61	39
28	61	39
29	61	39
30	61	39
31	60	40

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

	Muggy (%)	Oppressive (%)
1	58	42
2	57	43
3	56	44
4	54	46
5	53	47
6	52	48
7	50	50
8	49	51
9	48	52
10	46	54
11	45	55
12	44	56
13	43	57
14	43	57
15	42	58
16	42	58
17	41	59
18	41	59
19	40	60
20	40	60
21	40	60
22	39	61
23	39	61
24	38	62
25	38	62
26	37	63
27	36	64
28	36	64
29	35	65
30	35	65
31	34	66