Lisbon weather in September
“Reliably warm, dry, and generous with light.”
Roughly 4 rainy days across the month, on average.
September in Lisbon brings warm, pleasant weather ideal for sightseeing. Expect average highs of 26.1°C (79°F) and lows of 17.5°C (63°F), with minimal rainfall averaging just 30.1mm across roughly 4 rainy days. You'll enjoy an impressive 11.1 hours of sunshine daily, making it one of the sunniest months to visit.
This is peak shoulder season in Lisbon. Summer crowds thin out significantly, yet the city remains vibrant with cultural events and outdoor festivals. The weather is still warm enough for beach trips to nearby Cascais or Sintra, while locals return to regular routines, giving the city an authentic feel without overwhelming tourist masses.
September 2026 is an excellent choice for travelers seeking comfortable temperatures and low precipitation. Pack light layers for warm days and cool evenings, and bring a light rain jacket just in case. Book accommodation and popular tours in advance, as September remains popular, but you'll find better availability than July or August.
What to pack for Lisbon in September
September weather in Lisbon calls for breathable, layered clothing. Mornings and evenings are cool while afternoons are warm and sunny. Prioritize lightweight fabrics that dry quickly and offer sun protection.
- Linen shirt or cotton t-shirt
- Lightweight cardigan or thin sweater
- Light rain jacket
- Comfortable walking shorts or linen trousers
- Sunglasses and wide-brimmed hat
What to pack for Lisbon in September
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Where to stay in Lisbon
We don't review individual hotels — plenty of people do that well. What we do is send you to compare rooms in Lisbon across trusted platforms.
Compare hotels on Booking.com→Things worth doing
Explore Belém's historic monuments, hike to Pena Palace in Sintra, enjoy beach time at Cascais, visit local wine bars and rooftop terraces with city views.
September vs. the rest of the year
How this month compares in Lisbon. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit Lisbon
While September has its own character in Lisbon, the data-backed best months to visit Lisbon are May, June, July, August. These months combine the most favourable temperatures, rainfall, and sunshine across a ten-year climate record.
See the full best-time-to-visit guide for LisbonOther places with a similar climate right now
Lisbon in September — FAQ
Q01Is September a good time to visit Lisbon?
Is September a good time to visit Lisbon?
Yes — this is one of the best months of the year to visit. In September, Lisbon averages a high of 26°C (79°F) and a low of 18°C (64°F), with 30mm of rainfall across roughly 4 rainy days.
Q02What is the average temperature in Lisbon in September?
What is the average temperature in Lisbon in September?
The average high temperature in Lisbon during September is 26°C (79°F), with an average low of 18°C (64°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Lisbon have in September?
How many rainy days does Lisbon have in September?
Lisbon averages approximately 4 rainy days in September, with a total monthly rainfall of about 30mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Lisbon in September?
What should I pack for Lisbon in September?
For Lisbon in September, pack light, breathable clothing (cotton or linen), sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Lisbon in September?
How crowded is Lisbon in September?
Tourist crowds in Lisbon during September are typically moderate — shoulder season, a sweet spot between crowds and weather. Consider this when planning accommodation — prices track crowd levels closely.