Careiro da Várzea in Summer
In summer (December, January and February), Careiro da Várzea sees average daytime highs around 30°C and overnight lows near 25°C, with 817 mm of rain over about 80 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Across summer, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 3% of the time across summer, and the air most often feels miserable.
Summer is Careiro da Várzea's 3rd-best season to visit on our travel score. Careiro da Várzea has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Careiro da Várzea's year-round climate.
- Avg daytime high
- 30°C
- 3rd-warmest season
- Avg overnight low
- 25°C
- Rainfall
- 817 mm
- 80 wet days
- Avg wind
- 6 km/h
- Travel score
- 2.9
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Careiro da Várzea in Summer
Across summer, daytime highs hold fairly steady around 30°C.
A typical summer day in Careiro da Várzea reaches about 30°C and drops to 25°C overnight. The warmest of the three months is December, the coolest January.
How summer really feels in Careiro da Várzea
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.
Careiro da Várzea 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° / 25° | 275 | 27.5 | 12.2 | 2.9 |
| Feb | 30° / 25° | 282 | 25.5 | 12.1 | 2.9 |
| Mar | 30° / 25° | 357 | 29.3 | 12 | 2.7 |
| Apr | 30° / 25° | 345 | 28.2 | 11.9 | 2.7 |
| May | 30° / 25° | 286 | 28.2 | 11.9 | 2.8 |
| Jun | 30° / 25° | 159 | 22.3 | 11.8 | 3.3 |
| Jul | 31° / 25° | 97 | 18.3 | 11.8 | 3.8 |
| Aug | 32° / 25° | 82 | 15.3 | 11.9 | 3.6 |
| Sep | 32° / 25° | 102 | 17 | 12 | 3.2 |
| Oct | 32° / 26° | 131 | 19.1 | 12.1 | 3.0 |
| Nov | 32° / 25° | 167 | 22.2 | 12.1 | 2.8 |
| Dec | 30° / 25° | 260 | 27.2 | 12.2 | 2.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 3% of the time across summer.
Chance of precipitation in Summer
Careiro da Várzea gets around 817 mm of rain over 80 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 6 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 4.3 kWh/m².
Is summer a good time to visit Careiro da Várzea?
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 Careiro da Várzea.
What to pack for Careiro da Várzea in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Careiro da Várzea sees daytime highs around 30°C and nights near 25°C. Pack light clothes and rain gear. About 80 days see rain.
UV index in Careiro da Várzea in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Careiro da Várzea peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 12 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) | 15 | 15 | 15 | 14 | 12 | 10 | 10 | 11 | 11 | 10 | 9 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Very high |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Very high |
| Nov | 9 | Very high |
| Dec | 12 | Extreme |
Air quality in Careiro da Várzea 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 Careiro da Várzea is worst in October — around 29 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (June, 12 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 | 16 | 16 | 15 | 12 | 12 | 12 | 20 | 28 | 29 | 24 | 18 |
| Level | Moderate | Moderate | Moderate | Moderate | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 16 | Moderate |
| Mar | 16 | Moderate |
| Apr | 15 | Moderate |
| May | 12 | Good |
| Jun | 12 | Good |
| Jul | 12 | Moderate |
| Aug | 20 | Moderate |
| Sep | 28 | Moderate |
| Oct | 29 | Moderate |
| Nov | 24 | Moderate |
| Dec | 18 | Moderate |
Where is Careiro da Várzea?
Careiro da Várzea sits at 3.2°S, 59.8°W, 17 m above sea level, in Brazil. The nearest listed city is Manaus, 24 km away.
Topography around Careiro da Várzea
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Careiro da Várzea.
Within 3 km, the terrain around Careiro da Várzea has only modest variations in elevation — a maximum elevation change of 33 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 100 m; within 80 km, only modest variations in elevation — a maximum elevation change of 162 m.
The land around Careiro da Várzea is covered by grassland (48%) and water (21%) within 3 km, trees (39%), water (31%) and grassland (24%) within 16 km, and trees (78%) 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 Careiro da Várzea (-3.197°, -59.8267°, elevation 17 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.