Galiza Temperature by Month
The average annual maximum temperature in Galiza, 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 Galiza compares to cities worldwide.
Galiza Monthly Temperatures
The moderate changes in the climate in Galiza ensure gradual weather shifts through each season. At night, temperatures drop to between 18°C (64°F) and 11°C (52°F) depending on the time of year.
The chart below illustrates the average maximum day and minimum night temperatures in Galiza by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. August, the warmest month, gets 255 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Galiza 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
warm
pleasant
moderate
cold
very cold
Galiza vs World: Temperature Compared
Galiza'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.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Galiza?
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 Galiza, 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.
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 Galiza's weather — including monthly rainfall, sunshine hours, and humidity — visit our Galiza climate page.
