Sirinhaém in Summer
In summer (December, January and February), Sirinhaém sees average daytime highs around 28°C and overnight lows near 25°C, with 163 mm of rain over about 49 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Across summer, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 46% of the time across summer, and the air most often feels oppressive.
Summer is Sirinhaém's 2nd-best season to visit on our travel score. Sirinhaém 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 Sirinhaém's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 25°C
- Rainfall
- 163 mm
- 49 wet days
- Avg wind
- 15 km/h
- Travel score
- 5.2
- 2nd-best season
- Months
- Dec · Jan · Feb
Temperature in Sirinhaém in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Sirinhaém reaches about 28°C and drops to 25°C overnight. The warmest of the three months is February, the coolest December.
Sirinhaém 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 | 28° / 25° | 60 | 18.3 | 12.4 | 5.0 |
| Feb | 28° / 25° | 66 | 16.6 | 12.3 | 4.8 |
| Mar | 29° / 25° | 88 | 20 | 12.1 | 4.6 |
| Apr | 28° / 25° | 120 | 21.8 | 11.8 | 4.4 |
| May | 27° / 24° | 160 | 24.1 | 11.6 | 4.6 |
| Jun | 27° / 24° | 185 | 24.8 | 11.5 | 4.5 |
| Jul | 26° / 23° | 155 | 25 | 11.5 | 4.7 |
| Aug | 26° / 23° | 92 | 21.6 | 11.7 | 5.2 |
| Sep | 26° / 23° | 58 | 17.9 | 11.9 | 5.7 |
| Oct | 27° / 24° | 41 | 15.4 | 12.2 | 6.0 |
| Nov | 28° / 24° | 32 | 12.8 | 12.4 | 6.2 |
| Dec | 28° / 25° | 37 | 14.1 | 12.5 | 5.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 46% of the time across summer.
Chance of precipitation in Summer
Sirinhaém gets around 163 mm of rain over 49 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 15 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 30 min in early December to 12 h 12 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.
Hazard calendar for Sirinhaém
None of Sirinhaém's seasonal hazards peak in summer. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Sirinhaém's rainy season runs March–August, when most of the year's rain falls.
Is summer a good time to visit Sirinhaém?
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 Sirinhaém for sightseeing.
What to pack for Sirinhaém in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Sirinhaém sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 49 days see rain.
Sea temperature near Sirinhaém in Summer
The nearest coast averages about 28°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 27 km away) is warmest in April at about 29°C and coldest in August near 26°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) | 28 | 28 | 29 | 29 | 28 | 27 | 26 | 26 | 26 | 27 | 27 | 28 |
| Comfort | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 29 | Tropical |
| May | 28 | Tropical |
| Jun | 27 | Warm |
| Jul | 26 | Warm |
| Aug | 26 | Warm |
| Sep | 26 | Warm |
| Oct | 27 | Warm |
| Nov | 27 | Warm |
| Dec | 28 | Warm |
UV index in Sirinhaém 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 Sirinhaém peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 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) | 14 | 14 | 15 | 13 | 11 | 10 | 10 | 10 | 12 | 12 | 12 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Very high |
| Jul | 10 | Very high |
| Aug | 10 | Very high |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 12 | Extreme |
| Dec | 12 | Extreme |
Where is Sirinhaém?
Sirinhaém sits at 8.6°S, 35.1°W, 43 m above sea level, in Brazil. The nearest listed city is Rio Formoso, 10 km away.
Topography around Sirinhaém
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sirinhaém.
Within 3 km, the terrain around Sirinhaém has only modest variations in elevation — a maximum elevation change of 107 m around an average of 28 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 200 m; within 80 km, large variations in elevation — a maximum elevation change of 859 m.
The land around Sirinhaém is covered by trees (32%), grassland (30%) and cropland (30%) within 3 km, trees (32%), grassland (26%) and water (22%) within 16 km, and grassland (42%) and water (32%) 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 Sirinhaém (-8.5908°, -35.1161°, elevation 43 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.