Santa Maria Island Temperature by Month

The average annual maximum temperature in Santa Maria Island, Azores, Portugal is 20°C (68°F), with daytime highs ranging from 17°C (63°F) in March to 25°C (77°F) in August. This page covers monthly averages, day-night differences, and how Santa Maria Island compares to cities worldwide.

Seasonal changes in Santa Maria Island bring a little variety without extreme temperature swings. Nighttime lows range from 22°C (72°F) in August to 15°C (59°F) in March.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 247 hours of sunshine.

The chart below shows the average temperature throughout the year:

Santa Maria Island's average annual maximum temperature is 20°C (68°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.

Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.

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 Santa Maria Island, March is the coolest month, with average highs of 17°C (63°F) and humidity around 78%, considered high. In August, the warmest month, temperatures average 25°C (77°F) with 75% 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 Santa Maria Island's weather, including monthly rainfall, sunshine hours, and humidity, visit our Santa Maria Island climate page.