Quarteira Temperature by Month

The average annual maximum temperature in Quarteira, Algarve, Portugal is 21°C (70°F), with daytime highs ranging from 16°C (61°F) in January to 28°C (82°F) in July. This page covers monthly averages, day-night differences, and how Quarteira compares to cities worldwide.

The weather in Quarteira experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 19°C (66°F) in July to 10°C (50°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Quarteira by month:

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 361 hours of sunshine.

The chart below shows the average temperature throughout the year:

Quarteira'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.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

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 Quarteira, January is the coolest month, with average highs of 16°C (61°F) and humidity around 77%, considered high. In July, the warmest month, temperatures average 28°C (82°F) with 60% 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 Quarteira's weather, including monthly rainfall, sunshine hours, and humidity, visit our Quarteira climate page.