Castro Alves in Summer
In summer (December, January and February), Castro Alves sees average daytime highs around 31°C and overnight lows near 22°C, with 173 mm of rain over about 33 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 31°C. The sky is clear or mostly clear about 26% of the time across summer, and the air most often feels muggy.
Summer is Castro Alves's weakest season of the year to visit on our travel score. For the whole year in context, see Castro Alves's year-round climate.
- Avg daytime high
- 31°C
- warmest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 173 mm
- 33 wet days
- Avg wind
- 9 km/h
- Travel score
- 4.1
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Castro Alves in Summer
Across summer, daytime highs hold fairly steady around 31°C.
A typical summer day in Castro Alves reaches about 31°C and drops to 22°C overnight. The warmest of the three months is February, the coolest December.
How summer really feels in Castro Alves
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.
Castro Alves 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 | 31° / 22° | 69 | 12.2 | 12.7 | 4.1 |
| Feb | 32° / 22° | 47 | 11.5 | 12.4 | 4.0 |
| Mar | 31° / 22° | 60 | 13.9 | 12.1 | 3.9 |
| Apr | 30° / 22° | 49 | 14.9 | 11.7 | 4.4 |
| May | 28° / 21° | 35 | 12 | 11.4 | 5.5 |
| Jun | 27° / 20° | 34 | 12.9 | 11.3 | 6.1 |
| Jul | 26° / 19° | 36 | 13.2 | 11.3 | 6.2 |
| Aug | 27° / 19° | 33 | 13.7 | 11.6 | 6.0 |
| Sep | 28° / 19° | 26 | 10.5 | 11.9 | 5.9 |
| Oct | 30° / 20° | 34 | 10.6 | 12.3 | 5.1 |
| Nov | 31° / 21° | 56 | 11.1 | 12.6 | 4.5 |
| Dec | 31° / 22° | 56 | 9.4 | 12.7 | 4.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 26% of the time across summer.
Chance of precipitation in Summer
Castro Alves gets around 173 mm of rain over 33 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 42 min in early December to 12 h 18 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 5.9 kWh/m².
Is summer a good time to visit Castro Alves?
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 reasonable time to visit Castro Alves for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Castro Alves in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Castro Alves sees daytime highs around 31°C and nights near 22°C. Pack light clothes. Worth having: rain gear and sun protection. About 33 days see rain.
UV index in Castro Alves 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 Castro Alves peaks around February 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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) | 14 | 15 | 14 | 12 | 9 | 9 | 9 | 10 | 11 | 13 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 12 | Extreme |
| May | 9 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 10 | Extreme |
| Sep | 11 | Extreme |
| Oct | 13 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Where is Castro Alves?
Castro Alves sits at 12.8°S, 39.4°W, 255 m above sea level, in Brazil. The nearest listed city is Sapeaçu, 27 km away.
Topography around Castro Alves
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Castro Alves.
Within 3 km, the terrain around Castro Alves has only modest variations in elevation — a maximum elevation change of 134 m around an average of 248 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 689 m; within 80 km, large variations in elevation — a maximum elevation change of 931 m.
The land around Castro Alves is covered by grassland (87%) within 3 km, grassland (78%) within 16 km, and grassland (60%) and trees (30%) 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 Castro Alves (-12.7656°, -39.4283°, elevation 255 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.