Altamira in Summer
In summer (December, January and February), Altamira sees average daytime highs around 30°C and overnight lows near 23°C, with 672 mm of rain over about 77 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 32°C in early December to 30°C by late February. The sky is clear or mostly clear about 4% of the time across summer, and the air most often feels oppressive.
Summer is Altamira's 3rd-best season to visit on our travel score. For the whole year in context, see Altamira's year-round climate.
- Avg daytime high
- 30°C
- 3rd-warmest season
- Avg overnight low
- 23°C
- Rainfall
- 672 mm
- 77 wet days
- Avg wind
- 7 km/h
- Travel score
- 2.9
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Altamira in Summer
Over the season highs ease from about 32°C in early December to 30°C by late February.
A typical summer day in Altamira reaches about 30°C and drops to 23°C overnight. The warmest of the three months is December, the coolest February.
How summer really feels in Altamira
Once humidity and wind are folded in, summer brings about 90 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Altamira weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 23° | 248 | 28.1 | 12.2 | 2.8 |
| Feb | 29° / 23° | 273 | 26.5 | 12.1 | 2.8 |
| Mar | 30° / 23° | 328 | 29.1 | 12 | 2.8 |
| Apr | 30° / 23° | 281 | 28.2 | 11.9 | 2.7 |
| May | 30° / 23° | 190 | 26.2 | 11.9 | 3.0 |
| Jun | 31° / 23° | 71 | 16.6 | 11.8 | 3.9 |
| Jul | 31° / 22° | 46 | 10.2 | 11.8 | 4.4 |
| Aug | 33° / 23° | 31 | 7.3 | 11.9 | 3.9 |
| Sep | 33° / 24° | 34 | 7 | 12 | 3.7 |
| Oct | 33° / 24° | 60 | 11.2 | 12.1 | 3.4 |
| Nov | 32° / 24° | 100 | 15 | 12.1 | 3.3 |
| Dec | 31° / 24° | 152 | 21.9 | 12.2 | 3.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 4% of the time across summer.
Chance of precipitation in Summer
Altamira gets around 672 mm of rain over 77 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 12 min in early December to 12 h 06 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.4 kWh/m².
Hazard calendar for Altamira
In summer, Altamira overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Altamira's monsoon runs December–May, when most of the year's rain falls.
Is summer a good time to visit Altamira?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Altamira.
What to pack for Altamira in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Altamira sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 77 days see rain.
UV index in Altamira in Summer
Clear-sky midday UV across summer averages 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 Altamira peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 | 15 | 11 | 10 | 10 | 10 | 12 | 12 | 10 | 11 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 15 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Very high |
| Jul | 10 | Very high |
| Aug | 10 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 10 | Very high |
| Dec | 11 | Extreme |
Air quality in Altamira in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Altamira is worst in November — around 40 µg/m³ PM2.5 (poor), about 4.7× the cleanest month (June, 9 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) | 15 | 15 | 15 | 13 | 10 | 9 | 9 | 12 | 18 | 34 | 40 | 23 |
| Level | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Moderate | Moderate | Poor | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 15 | Moderate |
| Mar | 15 | Moderate |
| Apr | 13 | Moderate |
| May | 10 | Good |
| Jun | 9 | Good |
| Jul | 9 | Good |
| Aug | 12 | Good |
| Sep | 18 | Moderate |
| Oct | 34 | Moderate |
| Nov | 40 | Poor |
| Dec | 23 | Moderate |
Where is Altamira?
Altamira sits at 3.2°S, 52.2°W, 101 m above sea level, in Brazil. The nearest listed city is Brasil Novo, 39 km away.
Topography around Altamira
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Altamira.
Within 3 km, the terrain around Altamira has only modest variations in elevation — a maximum elevation change of 105 m around an average of 116 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 210 m; within 80 km, significant variations in elevation — a maximum elevation change of 405 m.
The land around Altamira is covered by trees (31%), artificial surfaces (29%) and grassland (21%) within 3 km, grassland (44%) and trees (42%) within 16 km, and trees (65%) and grassland (29%) 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 Altamira (-3.2033°, -52.2064°, elevation 101 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.