Santo Isidoro Temperature by Month

The average annual maximum temperature in Santo Isidoro, Centro Region, Portugal is 19°C (66°F), with daytime highs ranging from 15°C (59°F) in January to 23°C (73°F) in August. This page covers monthly averages, day-night differences, and how Santo Isidoro compares to cities worldwide.

Seasonal changes in Santo Isidoro bring a little variety without extreme temperature swings. Nighttime lows range from 18°C (64°F) in August to 11°C (52°F) in January.

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

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. August, the warmest month, averages 355 hours of sunshine.

The chart below shows the average temperature throughout the year:

Santo Isidoro's average annual maximum temperature is 19°C (66°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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 Santo Isidoro, January is the coolest month, with average highs of 15°C (59°F) and humidity around 82%, considered very 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.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

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