Lisboa Temperature by Month

The average annual maximum temperature in Lisboa, Portugal is 21°C (70°F), with daytime highs ranging from 15°C (59°F) in January to 27°C (81°F) in August. This page covers monthly averages, day-night differences, and how Lisboa compares to cities worldwide.

The climate in Lisboa is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 18°C (64°F) in August to 9°C (48°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Lisboa 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. August, the warmest month of the year, receives 350 hours of sunshine.

The chart below shows the average temperature throughout the year:

Lisboa's average annual maximum temperature is 21°C (70°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

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

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

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 Lisboa's weather, including monthly rainfall, sunshine hours, and humidity, visit our Lisboa climate page.