Lisbon weather in September 2025

Expect 81°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Lisbon in September. Check more long-term weather averages for Lisbon in September before you book your next holiday to Portugal in 2025/2026.

  • 81°F maximum daytime temperature in September in Lisbon81
    81°F max day temperature
  • 9 hours of sunshine per day
  • 6 days with some rainfall in September in Lisbon6
    6 days with some rainfall
  • 63°F minimum night-time temperature in September in Lisbon63
    63°F min night temperature
  • 12 hours of daylight per day in September in Lisbon12
    12 hours of daylight per day
  • Low heat & humidity in September in LisbonL
    Low heat & humidity
  • 1.0 inches monthly rainfall in September in Lisbon1.0
    1.0 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in Lisbon6
    6 (High) UV index
  • 66°F sea temperature in September in Lisbon66
    66°F sea temperature

More about Lisbon

Lisbon by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Portugal

Jet2holidays: up to £60pp off 2024/2025 holidays

  • Save up to £60 per person on holidays with myJet2
  • £60pp off winter 2024/2025 & £50pp off summer 2025
  • Travel before 31st October 2025 (inclusive)
Go to Jet2holidays deal >>

Expires at 23:59 on Saturday 30th Nov 2024 · View all Jet2holidays offers

Jet2holidaysJet2holidays deal finder

The September weather guide for Portugal (Lisbon) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

Back to top

More about Portugal

How hot is it in Lisbon in September?

Daytime temperatures usually reach 81°F in Lisbon in September with low heat and humidity, falling to 63°F at night.

How sunny is it in Lisbon in September?

There are normally 9 hours of bright sunshine each day in Lisbon in September - that's 68% of daylight hours.

How warm is the sea around Lisbon in September?

The average sea temperature around Lisbon in September is 66°F.

Does it rain in Lisbon in September?

There are usually 6 days with some rain in Lisbon in September and the average monthly rainfall is 1.0 inches.

Lisbon September sunrise & sunset times

Browse the sunrise and sunset times for Lisbon in September 2025. Select a month to view Lisbon sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:06 19:07
Monday, 15th September 2025 06:18 18:45
Tuesday, 30th September 2025 06:32 18:21

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^