Portel Temperature by Month

Portel in Alentejo, Portugal sees significant seasonal temperature differences, with daytime highs between 15°C (59°F) in January and 34°C (93°F) in July, averaging 24°C (75°F) annually. Explore the full monthly breakdown below.

Depending on the time of the year, temperatures range from very warm to mild in Portel. Nighttime lows follow the same pattern, ranging from 18°C (64°F) to 6°C (43°F).

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

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. July, the warmest month of the year, receives 370 hours of sunshine.

The chart below shows the average temperature throughout the year:

Portel's average annual maximum temperature is 24°C (75°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.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot 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 Portel, January is the coolest month, with average highs of 15°C (59°F) and humidity around 81%, considered very high. In July, the warmest month, temperatures average 34°C (93°F) with 50% humidity, conditions that feel moderate. 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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Portel this rarely lasts long on the ground.

For more on Portel's weather, including monthly rainfall, sunshine hours, and humidity, visit our Portel climate page.