Itanhém weather in December

In December, Itanhém sees average daytime highs of 31°C and overnight lows near 21°C, with 133 mm of rain across 13.9 wet days and about 13 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 17% of the time in December, and the air most often feels muggy.

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

Daytime high: 31°; 4th warmest
Overnight low: 21°; 9th coldest
Rainfall: 133 mm; 13.9 wet days
Daylight: 13 hours; 5:07 AM – 6:08 PM
Cloud cover: 70%; 11th clearest
Wind: 10 km/h; 5th windiest
Solar energy: 5.93 kWh/m²
Travel score: 4.2; out of 10

Itanhém is settlement in Brazil.

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

← November Itanhém 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 31°C through the month.

A typical December day in Itanhém reaches about 31°C in the afternoon and slips back to 21°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 34°C. Set against its neighbours, December runs about 1°C warmer than November and about 1°C cooler than 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)	30	30	30	30	30	30	30	30	30	30	30	30	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31
Avg low (°C)	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21

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

How December really feels in Itanhém

Once humidity and wind are folded in, December averages 28 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.

Itanhém 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.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	31° / 21°	81	11.5	12.9	4.1
Feb	32° / 22°	59	9.3	12.6	4.0
Mar	31° / 21°	111	15.4	12.1	3.9
Apr	30° / 20°	73	13.8	11.6	4.7
May	28° / 19°	40	10.1	11.2	6.1
Jun	27° / 17°	30	8.9	11	6.7
Jul	26° / 17°	31	9.4	11.1	6.8
Aug	27° / 16°	25	7.5	11.4	6.9
Sep	28° / 18°	30	6.7	11.9	6.3
Oct	29° / 19°	77	9.8	12.4	5.2
Nov	29° / 20°	139	14.7	12.8	4.5
Dec	31° / 21°	133	13.9	13	4.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 66%. Skies tend to open up as the month goes on.

	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 (%)	27	27	27	28	28	29	29	29	31	31	32	32	33	34	35	36	36	38	38	38	38	38	39	39	39	39	38	38	38	38	39
Cloudier (%)	73	73	73	72	72	71	71	71	69	69	68	68	67	66	65	64	64	62	62	62	62	62	61	61	61	61	62	62	62	62	61

	Clearer (%)	Cloudier (%)
1	27	73
2	27	73
3	27	73
4	28	72
5	28	72
6	29	71
7	29	71
8	29	71
9	31	69
10	31	69
11	32	68
12	32	68
13	33	67
14	34	66
15	35	65
16	36	64
17	36	64
18	38	62
19	38	62
20	38	62
21	38	62
22	38	62
23	39	61
24	39	61
25	39	61
26	39	61
27	38	62
28	38	62
29	38	62
30	38	62
31	39	61

Chance of precipitation in December

Any precipitation

Itanhém gets around 133 mm of rain over 13.9 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 44% and peaks near 55% on the wettest days. The odds ease 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 (%)	55	54	54	53	53	52	51	50	49	48	47	46	45	44	43	42	41	41	40	40	39	39	39	39	38	38	38	38	38	38	38

	Rain chance (%)
1	55
2	54
3	54
4	53
5	53
6	52
7	51
8	50
9	49
10	48
11	47
12	46
13	45
14	44
15	43
16	42
17	41
18	41
19	40
20	40
21	39
22	39
23	39
24	39
25	38
26	38
27	38
28	38
29	38
30	38
31	38

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the muggy band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 97% 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
Humid (%)	4	4	4	3	3	3	3	3	3	3	3	3	3	2	2	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3
Muggy (%)	66	65	64	64	62	62	61	60	60	60	60	60	60	62	62	62	63	63	64	64	65	65	65	65	66	66	66	65	65	65	64
Oppressive (%)	30	31	32	33	35	35	36	37	37	37	37	37	37	36	36	35	34	34	33	33	32	32	32	32	31	31	31	32	32	32	33

	Humid (%)	Muggy (%)	Oppressive (%)
1	4	66	30
2	4	65	31
3	4	64	32
4	3	64	33
5	3	62	35
6	3	62	35
7	3	61	36
8	3	60	37
9	3	60	37
10	3	60	37
11	3	60	37
12	3	60	37
13	3	60	37
14	2	62	36
15	2	62	36
16	3	62	35
17	3	63	34
18	3	63	34
19	3	64	33
20	3	64	33
21	3	65	32
22	3	65	32
23	3	65	32
24	3	65	32
25	3	66	31
26	3	66	31
27	3	66	31
28	3	65	32
29	3	65	32
30	3	65	32
31	3	64	33

Wind in December

Winds average 10 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 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)	10	10	9	9	9	9	9	9	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 hours at the start of December to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:03 AM to 5:14 AM, and sunset from 6:00 PM to 6:15 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)	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0
Sunrise (AM)	5:03	5:03	5:03	5:03	5:03	5:04	5:04	5:04	5:04	5:05	5:05	5:05	5:06	5:06	5:06	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	5:14	5:14
Sunset (PM)	6:00	6:00	6:01	6:01	6:02	6:03	6:03	6:04	6:04	6:05	6:05	6:06	6:06	6:07	6:08	6:08	6:09	6:09	6:10	6:10	6:11	6:11	6:12	6:12	6:12	6:13	6:13	6:14	6:14	6:14	6:15

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.0	5:03	6:00
2	13.0	5:03	6:00
3	13.0	5:03	6:01
4	13.0	5:03	6:01
5	13.0	5:03	6:02
6	13.0	5:04	6:03
7	13.0	5:04	6:03
8	13.0	5:04	6:04
9	13.0	5:04	6:04
10	13.0	5:05	6:05
11	13.0	5:05	6:05
12	13.0	5:05	6:06
13	13.0	5:06	6:06
14	13.0	5:06	6:07
15	13.0	5:06	6:08
16	13.0	5:07	6:08
17	13.0	5:07	6:09
18	13.0	5:08	6:09
19	13.0	5:08	6:10
20	13.0	5:09	6:10
21	13.0	5:09	6:11
22	13.0	5:10	6:11
23	13.0	5:10	6:12
24	13.0	5:10	6:12
25	13.0	5:11	6:12
26	13.0	5:11	6:13
27	13.0	5:12	6:13
28	13.0	5:12	6:14
29	13.0	5:13	6:14
30	13.0	5:14	6:14
31	13.0	5:14	6:15

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.93 kWh/m².

For context, solar energy here swings from a low near 3.45 kWh/m² to a high of 6.26 kWh/m² in January across the year — December's 5.93 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)	5.3	5.4	5.4	5.5	5.5	5.6	5.6	5.7	5.7	5.8	5.8	5.8	5.9	5.9	6.0	6.0	6.1	6.1	6.1	6.2	6.2	6.2	6.2	6.2	6.2	6.2	6.3	6.3	6.3	6.3	6.3
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	5.3	Bright
2	5.4	Bright
3	5.4	Bright
4	5.5	Bright
5	5.5	Bright
6	5.6	Bright
7	5.6	Bright
8	5.7	Bright
9	5.7	Bright
10	5.8	Bright
11	5.8	Bright
12	5.8	Bright
13	5.9	Bright
14	5.9	Bright
15	6.0	Bright
16	6.0	Intense
17	6.1	Intense
18	6.1	Intense
19	6.1	Intense
20	6.2	Intense
21	6.2	Intense
22	6.2	Intense
23	6.2	Intense
24	6.2	Intense
25	6.2	Intense
26	6.2	Intense
27	6.3	Intense
28	6.3	Intense
29	6.3	Intense
30	6.3	Intense
31	6.3	Intense

Planning a trip in December

Hazard calendar for Itanhém

In seasonPeak

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

Itanhém'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 Itanhém?

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

4.2

Sightseeing

9th-best month of the year

6.0

Beach & pool

10th-best month of the year

December is a reasonable time to visit Itanhém for sightseeing.

What to pack for Itanhém in December

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

In December, Itanhém sees daytime highs around 31°C and nights near 21°C. Pack light clothes. Worth having: rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

UV index in Itanhém 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 Itanhém peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (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	11	8	7	8	9	11	12	14	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	11	Extreme
May	8	Very high
Jun	7	Very high
Jul	8	Very high
Aug	9	Very high
Sep	11	Extreme
Oct	12	Extreme
Nov	14	Extreme
Dec	13	Extreme

Location & terrain

Where is Itanhém?

Itanhém sits at 17.2°S, 40.3°W, 189 m above sea level, in Brazil. The nearest listed city is Medeiros Neto, 26 km away.

Topography around Itanhém

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

Within 3 km, the terrain around Itanhém has only modest variations in elevation — a maximum elevation change of 201 m around an average of 212 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 623 m; within 80 km, large variations in elevation — a maximum elevation change of 1,163 m.

The land around Itanhém is covered by grassland (90%) within 3 km, grassland (85%) within 16 km, and grassland (75%) and trees (24%) within 80 km.

3 km

201 m

grassland 90%

16 km

623 m

grassland 85%

80 km

1,163 m

grassland 75%

treesgrasslandcroplandartificial surfaces

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

December weather nearby: Medeiros Neto 26 km · Águas Formosas 65 km · Teixeira de Freitas 75 km · Nanuque 75 km · Carlos Chagas 76 km · Itamaraju 86 km · Guaratinga 87 km · Posto da Mata 94 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 Itanhém (-17.1664°, -40.33°, elevation 189 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. 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	30	21
2	30	21
3	30	21
4	30	21
5	30	21
6	30	21
7	30	21
8	30	21
9	30	21
10	30	21
11	30	21
12	30	21
13	31	21
14	31	21
15	31	21
16	31	21
17	31	21
18	31	21
19	31	21
20	31	21
21	31	21
22	31	21
23	31	21
24	31	21
25	31	21
26	31	21
27	31	21
28	31	21
29	31	21
30	31	21
31	31	21

	Clearer (%)	Cloudier (%)
1	27	73
2	27	73
3	27	73
4	28	72
5	28	72
6	29	71
7	29	71
8	29	71
9	31	69
10	31	69
11	32	68
12	32	68
13	33	67
14	34	66
15	35	65
16	36	64
17	36	64
18	38	62
19	38	62
20	38	62
21	38	62
22	38	62
23	39	61
24	39	61
25	39	61
26	39	61
27	38	62
28	38	62
29	38	62
30	38	62
31	39	61

	Rain chance (%)
1	55
2	54
3	54
4	53
5	53
6	52
7	51
8	50
9	49
10	48
11	47
12	46
13	45
14	44
15	43
16	42
17	41
18	41
19	40
20	40
21	39
22	39
23	39
24	39
25	38
26	38
27	38
28	38
29	38
30	38
31	38

	Humid (%)	Muggy (%)	Oppressive (%)
1	4	66	30
2	4	65	31
3	4	64	32
4	3	64	33
5	3	62	35
6	3	62	35
7	3	61	36
8	3	60	37
9	3	60	37
10	3	60	37
11	3	60	37
12	3	60	37
13	3	60	37
14	2	62	36
15	2	62	36
16	3	62	35
17	3	63	34
18	3	63	34
19	3	64	33
20	3	64	33
21	3	65	32
22	3	65	32
23	3	65	32
24	3	65	32
25	3	66	31
26	3	66	31
27	3	66	31
28	3	65	32
29	3	65	32
30	3	65	32
31	3	64	33

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

	Clearer (%)	Cloudier (%)
1	27	73
2	27	73
3	27	73
4	28	72
5	28	72
6	29	71
7	29	71
8	29	71
9	31	69
10	31	69
11	32	68
12	32	68
13	33	67
14	34	66
15	35	65
16	36	64
17	36	64
18	38	62
19	38	62
20	38	62
21	38	62
22	38	62
23	39	61
24	39	61
25	39	61
26	39	61
27	38	62
28	38	62
29	38	62
30	38	62
31	39	61

	Rain chance (%)
1	55
2	54
3	54
4	53
5	53
6	52
7	51
8	50
9	49
10	48
11	47
12	46
13	45
14	44
15	43
16	42
17	41
18	41
19	40
20	40
21	39
22	39
23	39
24	39
25	38
26	38
27	38
28	38
29	38
30	38
31	38

	Humid (%)	Muggy (%)	Oppressive (%)
1	4	66	30
2	4	65	31
3	4	64	32
4	3	64	33
5	3	62	35
6	3	62	35
7	3	61	36
8	3	60	37
9	3	60	37
10	3	60	37
11	3	60	37
12	3	60	37
13	3	60	37
14	2	62	36
15	2	62	36
16	3	62	35
17	3	63	34
18	3	63	34
19	3	64	33
20	3	64	33
21	3	65	32
22	3	65	32
23	3	65	32
24	3	65	32
25	3	66	31
26	3	66	31
27	3	66	31
28	3	65	32
29	3	65	32
30	3	65	32
31	3	64	33

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

	Clearer (%)	Cloudier (%)
1	27	73
2	27	73
3	27	73
4	28	72
5	28	72
6	29	71
7	29	71
8	29	71
9	31	69
10	31	69
11	32	68
12	32	68
13	33	67
14	34	66
15	35	65
16	36	64
17	36	64
18	38	62
19	38	62
20	38	62
21	38	62
22	38	62
23	39	61
24	39	61
25	39	61
26	39	61
27	38	62
28	38	62
29	38	62
30	38	62
31	39	61

	Rain chance (%)
1	55
2	54
3	54
4	53
5	53
6	52
7	51
8	50
9	49
10	48
11	47
12	46
13	45
14	44
15	43
16	42
17	41
18	41
19	40
20	40
21	39
22	39
23	39
24	39
25	38
26	38
27	38
28	38
29	38
30	38
31	38

	Humid (%)	Muggy (%)	Oppressive (%)
1	4	66	30
2	4	65	31
3	4	64	32
4	3	64	33
5	3	62	35
6	3	62	35
7	3	61	36
8	3	60	37
9	3	60	37
10	3	60	37
11	3	60	37
12	3	60	37
13	3	60	37
14	2	62	36
15	2	62	36
16	3	62	35
17	3	63	34
18	3	63	34
19	3	64	33
20	3	64	33
21	3	65	32
22	3	65	32
23	3	65	32
24	3	65	32
25	3	66	31
26	3	66	31
27	3	66	31
28	3	65	32
29	3	65	32
30	3	65	32
31	3	64	33