Itanhaém weather in December
In December, Itanhaém sees average daytime highs of 25°C and overnight lows near 23°C, with 174 mm of rain across 19.2 wet days and about 13.5 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.
Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 18% 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 Itanhaém's 9th-clearest and 4th-windiest month. For the whole year in context, see Itanhaém's year-round climate.
- Daytime high
- 25°
- 4th warmest
- Overnight low
- 23°
- 9th coldest
- Rainfall
- 174 mm
- 19.2 wet days
- Daylight
- 13 h 30 min
- 6:19 AM – 7:48 PM
- Cloud cover
- 69%
- 9th clearest
- Wind
- 12 km/h
- 4th windiest
- Solar energy
- 5.89 kWh/m²
- Travel score
- 5.2
- out of 10
Itanhaém is human settlement in Brazil.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs climb over the month, from about 24°C in the first days to 26°C by the end.
A typical December day in Itanhaém reaches about 25°C in the afternoon and slips back to 23°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 28°C. Set against its neighbours, December runs about 2°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) | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg low (°C) | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 24 | 22 |
| 2 | 24 | 22 |
| 3 | 24 | 22 |
| 4 | 25 | 22 |
| 5 | 25 | 22 |
| 6 | 25 | 22 |
| 7 | 25 | 22 |
| 8 | 25 | 22 |
| 9 | 25 | 22 |
| 10 | 25 | 22 |
| 11 | 25 | 22 |
| 12 | 25 | 22 |
| 13 | 25 | 23 |
| 14 | 25 | 23 |
| 15 | 25 | 23 |
| 16 | 25 | 23 |
| 17 | 25 | 23 |
| 18 | 26 | 23 |
| 19 | 26 | 23 |
| 20 | 26 | 23 |
| 21 | 26 | 23 |
| 22 | 26 | 23 |
| 23 | 26 | 23 |
| 24 | 26 | 23 |
| 25 | 26 | 23 |
| 26 | 26 | 23 |
| 27 | 26 | 23 |
| 28 | 26 | 23 |
| 29 | 26 | 23 |
| 30 | 26 | 23 |
| 31 | 26 | 24 |
Itanhaém weather by month
How December compares with the rest of the year at a glance. December is the 4th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 24° | 227 | 22.9 | 13.3 | 4.6 |
| Feb | 27° / 24° | 211 | 19.7 | 12.8 | 4.7 |
| Mar | 26° / 23° | 212 | 21.7 | 12.2 | 5.0 |
| Apr | 25° / 22° | 137 | 14.6 | 11.5 | 6.2 |
| May | 23° / 20° | 125 | 13.5 | 10.8 | 6.4 |
| Jun | 22° / 18° | 101 | 10.4 | 10.5 | 6.6 |
| Jul | 21° / 17° | 107 | 10.4 | 10.7 | 6.6 |
| Aug | 21° / 18° | 88 | 10.1 | 11.2 | 6.5 |
| Sep | 21° / 19° | 141 | 14.2 | 11.9 | 5.8 |
| Oct | 23° / 20° | 155 | 16.7 | 12.6 | 5.5 |
| Nov | 24° / 21° | 163 | 17 | 13.2 | 5.6 |
| Dec | 25° / 23° | 174 | 19.2 | 13.5 | 5.2 |
Cloud cover in December
The sky is clear or mostly clear about 18% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 64%.
| 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 (%) | 35 | 35 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 34 | 34 | 35 | 36 | 36 | 36 | 36 | 37 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 37 | 36 | 36 | 35 | 34 | 33 | 33 |
| Cloudier (%) | 65 | 65 | 65 | 65 | 65 | 66 | 66 | 66 | 66 | 66 | 66 | 65 | 64 | 64 | 64 | 64 | 63 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 63 | 64 | 64 | 65 | 66 | 67 | 67 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 35 | 65 |
| 2 | 35 | 65 |
| 3 | 35 | 65 |
| 4 | 35 | 65 |
| 5 | 35 | 65 |
| 6 | 34 | 66 |
| 7 | 34 | 66 |
| 8 | 34 | 66 |
| 9 | 34 | 66 |
| 10 | 34 | 66 |
| 11 | 34 | 66 |
| 12 | 35 | 65 |
| 13 | 36 | 64 |
| 14 | 36 | 64 |
| 15 | 36 | 64 |
| 16 | 36 | 64 |
| 17 | 37 | 63 |
| 18 | 38 | 62 |
| 19 | 38 | 62 |
| 20 | 38 | 62 |
| 21 | 38 | 62 |
| 22 | 38 | 62 |
| 23 | 38 | 62 |
| 24 | 38 | 62 |
| 25 | 37 | 63 |
| 26 | 36 | 64 |
| 27 | 36 | 64 |
| 28 | 35 | 65 |
| 29 | 34 | 66 |
| 30 | 33 | 67 |
| 31 | 33 | 67 |
Chance of precipitation in December
Itanhaém gets around 174 mm of rain over 19.2 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 63% and peaks near 68% 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 (%) | 59 | 60 | 61 | 61 | 62 | 62 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 62 | 62 | 62 | 62 | 61 | 61 | 62 | 62 | 63 | 64 | 65 | 66 | 66 | 67 | 68 |
| Rain chance (%) | |
|---|---|
| 1 | 59 |
| 2 | 60 |
| 3 | 61 |
| 4 | 61 |
| 5 | 62 |
| 6 | 62 |
| 7 | 63 |
| 8 | 63 |
| 9 | 63 |
| 10 | 63 |
| 11 | 63 |
| 12 | 63 |
| 13 | 63 |
| 14 | 63 |
| 15 | 63 |
| 16 | 63 |
| 17 | 62 |
| 18 | 62 |
| 19 | 62 |
| 20 | 62 |
| 21 | 61 |
| 22 | 61 |
| 23 | 62 |
| 24 | 62 |
| 25 | 63 |
| 26 | 64 |
| 27 | 65 |
| 28 | 66 |
| 29 | 66 |
| 30 | 67 |
| 31 | 68 |
Humidity in December
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 54% of days. Sticky, muggy-or-worse air turns up on roughly 91% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 4 |
| Muggy (%) | 42 | 41 | 41 | 40 | 40 | 39 | 38 | 37 | 36 | 35 | 35 | 34 | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 25 | 24 | 23 | 22 | 22 | 21 | 21 | 21 | 21 | 20 |
| Oppressive (%) | 40 | 41 | 43 | 44 | 45 | 46 | 48 | 49 | 50 | 52 | 52 | 53 | 54 | 56 | 56 | 57 | 57 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 60 | 60 | 60 | 60 | 60 | 59 | 59 |
| Miserable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 13 | 14 | 15 | 15 | 16 | 17 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| 1 | 2 | 14 | 42 | 40 | 1 |
| 2 | 2 | 14 | 41 | 41 | 1 |
| 3 | 2 | 13 | 41 | 43 | 1 |
| 4 | 2 | 13 | 40 | 44 | 1 |
| 5 | 2 | 12 | 40 | 45 | 1 |
| 6 | 1 | 12 | 39 | 46 | 1 |
| 7 | 1 | 12 | 38 | 48 | 2 |
| 8 | 1 | 11 | 37 | 49 | 2 |
| 9 | 1 | 11 | 36 | 50 | 2 |
| 10 | 1 | 10 | 35 | 52 | 2 |
| 11 | 1 | 10 | 35 | 52 | 2 |
| 12 | 1 | 9 | 34 | 53 | 3 |
| 13 | 1 | 9 | 33 | 54 | 3 |
| 14 | 1 | 8 | 32 | 56 | 3 |
| 15 | 1 | 8 | 31 | 56 | 4 |
| 16 | 1 | 8 | 30 | 57 | 4 |
| 17 | 1 | 8 | 29 | 57 | 5 |
| 18 | 1 | 7 | 28 | 58 | 6 |
| 19 | 1 | 7 | 27 | 58 | 7 |
| 20 | 1 | 7 | 26 | 58 | 8 |
| 21 | 1 | 7 | 25 | 58 | 9 |
| 22 | 1 | 6 | 25 | 58 | 10 |
| 23 | 1 | 6 | 24 | 58 | 11 |
| 24 | 1 | 6 | 23 | 58 | 12 |
| 25 | 0 | 5 | 22 | 60 | 13 |
| 26 | 0 | 5 | 22 | 60 | 13 |
| 27 | 0 | 5 | 21 | 60 | 14 |
| 28 | 0 | 4 | 21 | 60 | 15 |
| 29 | 0 | 4 | 21 | 60 | 15 |
| 30 | 0 | 4 | 21 | 59 | 16 |
| 31 | 0 | 4 | 20 | 59 | 17 |
Wind in December
Winds average 12 km/h in December.
Across December, daily wind ranges from about 11 km/h on the calmest days to 13 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) | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| 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 | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 13 | light breeze |
| 2 | 13 | light breeze |
| 3 | 13 | light breeze |
| 4 | 13 | light breeze |
| 5 | 13 | 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 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in December
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 6:15 AM to 6:26 AM, and sunset from 7:39 PM to 7:55 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) | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 |
| Sunrise (AM) | 6:15 | 6:15 | 6:15 | 6:16 | 6:16 | 6:16 | 6:16 | 6:16 | 6:17 | 6:17 | 6:17 | 6:17 | 6:18 | 6:18 | 6:18 | 6:19 | 6:19 | 6:19 | 6:20 | 6:20 | 6:21 | 6:21 | 6:22 | 6:22 | 6:23 | 6:23 | 6:24 | 6:24 | 6:25 | 6:25 | 6:26 |
| Sunset (PM) | 7:39 | 7:39 | 7:40 | 7:41 | 7:41 | 7:42 | 7:43 | 7:43 | 7:44 | 7:44 | 7:45 | 7:46 | 7:46 | 7:47 | 7:47 | 7:48 | 7:49 | 7:49 | 7:50 | 7:50 | 7:51 | 7:51 | 7:51 | 7:52 | 7:52 | 7:53 | 7:53 | 7:54 | 7:54 | 7:54 | 7:55 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.4 | 6:15 | 7:39 |
| 2 | 13.4 | 6:15 | 7:39 |
| 3 | 13.4 | 6:15 | 7:40 |
| 4 | 13.4 | 6:16 | 7:41 |
| 5 | 13.4 | 6:16 | 7:41 |
| 6 | 13.4 | 6:16 | 7:42 |
| 7 | 13.4 | 6:16 | 7:43 |
| 8 | 13.4 | 6:16 | 7:43 |
| 9 | 13.5 | 6:17 | 7:44 |
| 10 | 13.5 | 6:17 | 7:44 |
| 11 | 13.5 | 6:17 | 7:45 |
| 12 | 13.5 | 6:17 | 7:46 |
| 13 | 13.5 | 6:18 | 7:46 |
| 14 | 13.5 | 6:18 | 7:47 |
| 15 | 13.5 | 6:18 | 7:47 |
| 16 | 13.5 | 6:19 | 7:48 |
| 17 | 13.5 | 6:19 | 7:49 |
| 18 | 13.5 | 6:19 | 7:49 |
| 19 | 13.5 | 6:20 | 7:50 |
| 20 | 13.5 | 6:20 | 7:50 |
| 21 | 13.5 | 6:21 | 7:51 |
| 22 | 13.5 | 6:21 | 7:51 |
| 23 | 13.5 | 6:22 | 7:51 |
| 24 | 13.5 | 6:22 | 7:52 |
| 25 | 13.5 | 6:23 | 7:52 |
| 26 | 13.5 | 6:23 | 7:53 |
| 27 | 13.5 | 6:24 | 7:53 |
| 28 | 13.5 | 6:24 | 7:54 |
| 29 | 13.5 | 6:25 | 7:54 |
| 30 | 13.5 | 6:25 | 7:54 |
| 31 | 13.5 | 6:26 | 7:55 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 5.89 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 3.03 kWh/m² to a high of 5.89 kWh/m² in December across the year — December's 5.89 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) | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.8 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.8 | Bright |
| 2 | 5.8 | Bright |
| 3 | 5.8 | Bright |
| 4 | 5.8 | Bright |
| 5 | 5.8 | Bright |
| 6 | 5.8 | Bright |
| 7 | 5.8 | Bright |
| 8 | 5.8 | Bright |
| 9 | 5.8 | Bright |
| 10 | 5.8 | Bright |
| 11 | 5.8 | Bright |
| 12 | 5.8 | Bright |
| 13 | 5.8 | Bright |
| 14 | 5.8 | Bright |
| 15 | 5.8 | Bright |
| 16 | 5.9 | Bright |
| 17 | 5.9 | Bright |
| 18 | 5.9 | Bright |
| 19 | 5.9 | Bright |
| 20 | 5.9 | Bright |
| 21 | 5.9 | Bright |
| 22 | 5.9 | Bright |
| 23 | 5.9 | Bright |
| 24 | 5.9 | Bright |
| 25 | 5.9 | Bright |
| 26 | 5.9 | Bright |
| 27 | 5.9 | Bright |
| 28 | 5.9 | Bright |
| 29 | 5.9 | Bright |
| 30 | 5.9 | Bright |
| 31 | 5.8 | Bright |
Is December a good time to visit Itanhaém?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Itanhaém for sightseeing.
What to pack for Itanhaém in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Itanhaém sees daytime highs around 25°C and nights near 23°C. Pack rain gear. Worth having: light clothes and sun protection. About 19 days see rain.
Sea temperature near Itanhaém 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 18 km away) is warmest in February at about 27°C and coldest in August near 20°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 | 27 | 27 | 26 | 24 | 22 | 21 | 20 | 21 | 22 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 26 | Warm |
| May | 24 | Refreshing |
| Jun | 22 | Refreshing |
| Jul | 21 | Refreshing |
| Aug | 20 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Itanhaém in December
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 Itanhaém peaks around January 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (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 | 14 | 9 | 8 | 7 | 6 | 5 | 7 | 7 | 10 | 13 | 13 |
| Level | Extreme | Extreme | Very high | Very high | High | High | Moderate | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 7 | High |
| Sep | 7 | Very high |
| Oct | 10 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in Itanhaém in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Itanhaém is worst in July — around 52 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (February, 24 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 25 | 24 | 26 | 28 | 36 | 49 | 52 | 47 | 41 | 31 | 25 | 26 |
| Level | Moderate | Moderate | Moderate | Moderate | Poor | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 25 | Moderate |
| Feb | 24 | Moderate |
| Mar | 26 | Moderate |
| Apr | 28 | Moderate |
| May | 36 | Poor |
| Jun | 49 | Poor |
| Jul | 52 | Poor |
| Aug | 47 | Poor |
| Sep | 41 | Poor |
| Oct | 31 | Moderate |
| Nov | 25 | Moderate |
| Dec | 26 | Moderate |
Where is Itanhaém?
Itanhaém sits at 24.2°S, 46.8°W, 12 m above sea level, in Brazil. The nearest listed city is Mongaguá, 20 km away.
Topography around Itanhaém
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Itanhaém.
Within 3 km, the terrain around Itanhaém has only modest variations in elevation — a maximum elevation change of 70 m around an average of 3 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 700 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,389 m.
The land around Itanhaém is covered by water (43%) and artificial surfaces (29%) within 3 km, water (48%) and trees (44%) within 16 km, and trees (47%) and water (41%) within 80 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 Itanhaém (-24.1831°, -46.7889°, elevation 12 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).