Serrana in Summer
In summer (December, January and February), Serrana sees average daytime highs around 29°C and overnight lows near 20°C, with 687 mm of rain over about 65 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 15% of the time across summer, and the air most often feels muggy.
Summer is Serrana's weakest season of the year to visit on our travel score. For the whole year in context, see Serrana's year-round climate.
- Avg daytime high
- 29°C
- 2nd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 687 mm
- 65 wet days
- Avg wind
- 7 km/h
- Travel score
- 3.8
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Serrana in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Serrana reaches about 29°C and drops to 20°C overnight. The warmest of the three months is February, the coolest December.
Serrana 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 | 29° / 20° | 269 | 23.5 | 13.1 | 3.6 |
| Feb | 29° / 20° | 188 | 18.8 | 12.7 | 3.9 |
| Mar | 29° / 20° | 166 | 18.9 | 12.1 | 4.4 |
| Apr | 28° / 18° | 68 | 9.3 | 11.5 | 6.0 |
| May | 26° / 15° | 47 | 5.7 | 11 | 7.5 |
| Jun | 26° / 14° | 27 | 3.1 | 10.7 | 8.2 |
| Jul | 26° / 14° | 19 | 2.4 | 10.8 | 8.3 |
| Aug | 28° / 15° | 19 | 3 | 11.3 | 7.5 |
| Sep | 30° / 18° | 69 | 7.4 | 11.9 | 5.6 |
| Oct | 30° / 19° | 116 | 13.2 | 12.5 | 4.6 |
| Nov | 29° / 20° | 172 | 17.5 | 13 | 4.3 |
| Dec | 29° / 20° | 230 | 22.9 | 13.3 | 3.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 15% of the time across summer.
Chance of precipitation in Summer
Serrana gets around 687 mm of rain over 65 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 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 12 min in early December to 12 h 30 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 5.7 kWh/m².
Hazard calendar for Serrana
In summer, Serrana overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Serrana's monsoon runs November–March, when most of the year's rain falls.
Is summer a good time to visit Serrana?
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 Serrana.
What to pack for Serrana in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Serrana sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 65 days see rain.
UV index in Serrana 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 Serrana peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 7 (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 | 13 | 10 | 8 | 7 | 7 | 9 | 10 | 11 | 14 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | Very high | High | High | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 13 | Extreme |
| Apr | 10 | Very high |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 7 | High |
| Aug | 9 | Very high |
| Sep | 10 | Very high |
| Oct | 11 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Air quality in Serrana 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 Serrana is worst in September — around 43 µg/m³ PM2.5 (poor), about 5.2× the cleanest month (November, 8 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) | 9 | 10 | 10 | 11 | 12 | 11 | 11 | 20 | 43 | 15 | 8 | 9 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Poor | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 10 | Good |
| Mar | 10 | Good |
| Apr | 11 | Good |
| May | 12 | Good |
| Jun | 11 | Good |
| Jul | 11 | Good |
| Aug | 20 | Moderate |
| Sep | 43 | Poor |
| Oct | 15 | Moderate |
| Nov | 8 | Good |
| Dec | 9 | Good |
Where is Serrana?
Serrana sits at 21.2°S, 47.6°W, 560 m above sea level, in Brazil. The nearest listed city is Cravinhos, 20 km away.
Topography around Serrana
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Serrana.
Within 3 km, the terrain around Serrana has only modest variations in elevation — a maximum elevation change of 187 m around an average of 585 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 365 m; within 80 km, large variations in elevation — a maximum elevation change of 785 m.
The land around Serrana is covered by cropland (51%) and artificial surfaces (20%) within 3 km, cropland (59%) and trees (27%) within 16 km, and cropland (55%) and trees (31%) 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 Serrana (-21.2114°, -47.5956°, elevation 560 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.