Portimão Temperature by Month
The average annual maximum temperature in Portimão, Algarve, Portugal is 22°C (72°F), with daytime highs ranging from 16°C (61°F) in January to 28°C (82°F) in August. This page covers monthly averages, day-night differences, and how Portimão compares to cities worldwide.
Portimão Monthly Temperatures
The climate in Portimão is dynamic, ranging widely from moderate in winter to comfortable in summer. Nights are significantly colder, with lows dropping from 19°C (66°F) in August to 9°C (48°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Portimão 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 357 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Portimão Temperatures: 1976-2026
Browse day-by-day temperature records for Portimão spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Portimão 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
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moderate
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Portimão vs World: Temperature Compared
Portimão's average annual maximum temperature is 22°C (72°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.
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.
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 Portimão this rarely lasts long on the ground.
For more on Portimão's weather — including monthly rainfall, sunshine hours, and humidity — visit our Portimão climate page.
