Sertã Temperature by Month
Sertã, Centro Region, Portugal has an average annual maximum temperature of 21°C (70°F), ranging from 14°C (57°F) in January to 31°C (88°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Sertã Monthly Temperatures
The climate in Sertã is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 16°C (61°F) in August to 5°C (41°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Sertã by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 301 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Sertã vs Portugal
The map below shows the annual temperature across Portugal. You can also select individual months if you want to compare a specific time of year.
very warm
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moderate
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Sertã vs World: Temperature Compared
Sertã's average annual maximum temperature is 21°C (70°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Sertã?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Sertã, January is the coolest month, with average highs of 14°C (57°F) and humidity around 78% — considered high. In August, the warmest month, temperatures average 31°C (88°F) with 67% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Sertã's weather — including monthly rainfall, sunshine hours, and humidity — visit our Sertã climate page.
