Monthly Rentals in Cascais: What a Furnished Month Really Costs

How much does a monthly rental in Cascais cost?

The median furnished month cost €4,950 per 30 nights. That comes from 29 stays of 28 nights or more, in 19 homes in the Cascais area that Portugal Portfolio manages, over the 12 months to 31 October 2026. The median stay lasted 31 nights. Every price below is for the accommodation only, before cleaning fees and tourist tax.

Size moves the price more than anything else. Here are the figures for the whole 12 months, by number of bedrooms. The rows are small samples, so read them as a guide and not as a price list.

Stays of 28 nights or more arriving between 1 November 2025 to 31 October 2026. Accommodation only, before cleaning fees and tourist tax. Portugal Portfolio booking records, homes in the municipality of Cascais.

Take the median as the middle of the range and the quartiles as its edges. A two-bedroom stay at the lower quartile cost €2,650 per 30 nights, while a three-bedroom stay at the upper quartile cost €7,900. Where a home sits in Cascais, how it is furnished and when you arrive all change the number. Ask us for a quote for your own dates.

Is a monthly rental cheaper in winter?

Yes, in the records it was. Winter arrivals (November to March, winters 2024/25 and 2025/26 together) had a median of €4,000 per 30 nights, against €4,950 for stays of any season over the last 12 months. That is 34 stays in 21 homes, with a median length of 42 nights.

Stays of 28 nights or more arriving from November to March, in the winters of 2024/25 and 2025/26. Accommodation only, before cleaning fees and tourist tax. Portugal Portfolio booking records, homes in the municipality of Cascais.

The gap is widest in the smaller homes. A studio or one-bedroom winter stay had a median of €2,000 per 30 nights, and a two-bedroom had €2,800. A three-bedroom home had a median of €6,000, a little above the all-season three-bedroom median, so size matters more than the season for the larger homes. Accommodation only, before cleaning and tourist tax.

How do nightly rates change through the year?

Summer nightly rates run well above winter ones in every size of home. The table shows the average rate for nights actually sold, in winter (November to March) and summer (June to September), over the 12 months to 31 October 2026.

Average nightly rate on nights actually sold, before cleaning fees and tourist tax. Portugal Portfolio booking records, 1 November 2025 to 31 October 2026.

A studio or one-bedroom averaged €80 a night in winter and €148 in summer. For all 34 homes, the monthly average ranged from €116 a night in February to €287 in August. If your dates are flexible, a month that starts in late autumn or in the first weeks of the year gives the lowest nightly rates. A month that includes July or August gives the highest. Long stays also tend to sit below holiday rates: stays of 28 nights or more earned €164 a night on average, against €207 for stays under a week.

When do people arrive, and how far ahead do they book?

Most long stays begin in the first months of the year. Of the 29 stays of 28 nights or more in the 12 months to 31 October 2026, 8 arrived in January, 5 in February, 4 in March and 3 in April. The other 9 were spread across the rest of the year. Across winters 2024/25 and 2025/26, 26 of the 34 winter stays arrived in January or February.

Lead times come from all bookings, not only long stays. Across 990 bookings that started in the period, the median guest booked 27 days before arrival. 38% booked 14 days or less ahead, and 19% booked more than 90 days ahead. For a month in the January and February window, asking early gives you more homes to choose from. Availability depends on the dates, so check the booking page or write to the team.

What kind of contract is a stay of a month or more?

A stay of a month or more can be set up as a lease for non-permanent housing or for a special transitional purpose. Article 1095 of the Portuguese Civil Code (Código Civil) says a residential lease cannot be shorter than one year, and then, in paragraph 3, that this minimum does not apply to contracts for non-permanent housing or for special transitional purposes, such as professional, education and training or tourism reasons, stated in the contract. Paragraph 4 limits tourism-purpose contracts to one per calendar year for each unit.

Stays under 30 days are treated differently. Article 4, paragraph 2 of Decreto-Lei 128/2014, as republished by Decreto-Lei 76/2024, presumes that a furnished and equipped property offered to the public with services such as cleaning, for periods under 30 days, is local accommodation. Paragraph 3 says that presumption can be rebutted under general law, for example with a registered lease. The paperwork for your own stay depends on the home and the dates, so ask the team to confirm it, and take legal or tax advice if you need certainty.

What should you have ready before you book a month?

Have your dates, your party size and your questions ready, and think about a Portuguese tax number (NIF). Ask the team whether your booking needs one. Our relocating to Portugal guide explains the steps around a longer stay.

Ask what each home includes before you choose. Heating, cleaning, linen, internet, utilities and parking differ from home to home, and we would rather tell you for the specific home than list something we cannot verify here. Our mid-term rentals page and the comparison of mid-term and short-term stays cover the difference in more detail.

Should you stay in Cascais or Estoril?

Both sit on the same CP train line, so either works if you plan to commute or visit Lisbon. In our records the median nightly rate was €185 in Cascais (19 homes) and €193 in Estoril (12 homes), across all bookings over the 12 months to 31 October 2026.

The CP timetable valid since 6 April 2026 lists Cascais, Monte Estoril, Estoril, São João do Estoril, São Pedro do Estoril, Parede and Carcavelos on the Cascais line, with Belém and Cais do Sodré toward Lisbon. A train from Cascais reaches Cais do Sodré in about 40 minutes, and from Estoril in about 36. On weekdays, daytime departures from Cascais run every 20 minutes. Check cp.pt for the current times before you plan around them. Browse our Cascais homes to see what is available in each town.

What is winter like in Cascais?

Mild and wet. IPMA, the Portuguese weather institute, publishes 1991 to 2020 climate normals for its Lisbon station (Instituto Geofísico), which is the nearest published guide. The mean temperature is 12.4 °C in December, 11.8 °C in January and 12.8 °C in February. In January the mean maximum is 15.1 °C and the mean minimum is 8.6 °C.

November is the wettest month at 133.9 mm, followed by December at 108.5 mm and January at 103.8 mm. December and January each average 10.0 days with 1 mm of rain or more. This is a Lisbon station and not a Cascais one, so treat the numbers as an estimate. Ask the team how a home is heated before you book a winter month.

Where does the information in this guide come from?

The revenue, occupancy and price figures on this page are Portugal Portfolio's own data. Legal and tax rules were read at the official sources listed below on 10 November 2026. If a source changes, the source is right.

• Portugal Portfolio booking records 34 homes in the municipality of Cascais with guests across the 12 months from 1 November 2025 to 31 October 2026, 6,468 nights sold. Each night is counted once. Where the same stay appears twice, the lower price is used. No group has fewer than 5 homes.
• Decreto-Lei 128/2014 as republished by Decreto-Lei 76/2024 (Diario da Republica) Article 4, paragraph 2(b) presumes local accommodation for a furnished and equipped property offered to the public with services such as cleaning for periods under 30 days, and paragraph 3 says the presumption can be rebutted under general law, for example with a registered lease.
• Codigo Civil, articles 1094 and 1095 (PGDL) Article 1094 allows fixed-term or indefinite residential leases and treats a silent contract as a five-year fixed term, article 1095 sets a term of at least one and at most 30 years, and paragraphs 3 and 4 exempt non-permanent housing or special transitional purposes (professional, education and training, tourism) from the minimum, with one tourism contract per unit per calendar year.
• IPMA climate normals 1991-2020, Lisboa Instituto Geofisico Monthly mean, maximum and minimum temperatures, rainfall totals and days with 1 mm or more of rain for the Lisbon station, for example December 12.4 C, January 11.8 C, February 12.8 C and November rainfall 133.9 mm.
• CP Cascais line timetable, valid since 6 April 2026 Stations from Cascais to Cais do Sodre, about 40 minutes from Cascais to Cais do Sodre on weekday trains, about 36 from Estoril, and weekday daytime departures every 20 minutes from Cascais.

What could not be confirmed. Not confirmed from an official source: whether a Portuguese tax number (NIF) is needed for a booking, how each stay is documented (the contract type Portugal Portfolio uses for a given stay), and what each home includes (heating, utilities, linen, cleaning), which the page tells readers to ask the team. Cascais weather is not published by IPMA in these normals, so the Lisbon station is used as a guide.

Who writes this guide?

Frequently asked questions about monthly rentals in Cascais