Weather Guide

Lisbon, Portugal Average Monthly Weather

Weather score52Mixed annual avg

Best months: August, July, September

Across the year, average daytime temperatures are around 21°C, sunshine averages 7.5h per day, and rainfall totals about 742mm. Sea temperatures average 17°C across the year.

Lisbon, Portugal, Portugal travel weather guide
Photo by Leonhard_Niederwimmer on Pixabay

Annual weather

Annual averages

Temp

21°C

Rain

742mm

Annual total

Sun

7.5h

Sea

17°C

Weather score

52

Mixed avg

Seasonal climate calendar

TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score

Trip feel

Mild

Average highs are around 23°C, so days are mild rather than hot.

Drier

Rainfall averages 80mm, which is relatively low for holiday planning.

Some sun

Sunshine averages 6.7h per day, enough for a balanced month.

Cool sea

Sea temperatures average 19°C, so the water can feel cool.

Map

Weather map

Compare Lisbon, Portugal with nearby places by weather score, rain, sun, temperature, and swim conditions.

Temperature

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October23°C average high

October is close to Lisbon's yearly temperature average, giving a typical read on daytime heat.

Warmest monthsJune to September

This stretch sets the upper range for average daytime heat.

October80mm average rain

October is wetter than Lisbon's yearly average, so flexible plans matter more.

Driest monthsMay to September

This is the drier part of the year, when outdoor plans usually need less weather flexibility.

October6.7 hours average sun

October is below Lisbon's yearly sunshine average, so bright-day planning is less reliable than in peak months.

Brightest monthsJune to August

This stretch has the strongest sunshine in the monthly averages.

Sea temperature

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October19°C average sea

October is one of Lisbon's warmest sea months, when swimming comfort is usually strongest.

Warmest seaJune to October

Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.

Weather score

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October55 weather score

October sits close to Lisbon's yearly weather-score average, giving a typical overall read on the month.

Best weather monthsJune to September

These months have the strongest weather score in the monthly averages.

Hotels in Lisbon, Portugal