Top Things to Do in Lisbon This Week (August 17–23, 2026) in Lisbon

Updated for Monday, August 17 to Sunday, August 23, 2026.

The week splits cleanly. Weekdays still have a named family workshop in Jardim da Estrela. The weekend is music: Solomun on the river, a free castle sunset, cheap jazz in Parque Mayer, and free concerts in Cascais. Choose one evening plan. Do not stack Belém, the castle, and Cascais on the same day.

The shortlist

Pessoa(s) à escuta — Oficina de Verão

Monday 17–Friday 21 August, 10:00–17:00 · Jardim da Estrela
Casa Fernando Pessoa runs this summer workshop for ages 7–12: sounds, plant instruments, and the heteronyms, outdoors in the garden. €14 a day, drop-off from 09:30, booking by email to the educational service. Friday 21 is the last day of this session. It is a booked workshop, not a casual garden visit.

Festas do Mar, Cascais

From Thursday 20 August, evenings · Baía de Cascais
The Câmara de Cascais festival runs 20–30 August, with concert nights 20–23 and 27–30. This week’s Palco Cascais line-up, from the municipal announcement, includes Daniela Mercury (Thu 20), Os Quatro e Meia (Fri 21), Diogo Piçarra (Sat 22), and Dillaz (Sun 23). Free, by the water, and a labelled Cascais trip on the train from Cais do Sodré. Recheck last trains.

Solomun Lisboa by Brunch Electronik x Neopop

Saturday 22 August, 15:00–23:00 · Terreiro das Missas, Belém
Weekend headline. Brunch Electronik and Visit Lisboa confirm the date, times, and Belém site. 18+. One plan for Saturday, not an add-on after the castle.

Pôr do Sol no Castelo — Samalandra

Saturday 22 August, 19:00 · Castelo de São Jorge
Free, capacity-limited sunset concert. Tickets from 18:00 on the day, one per person. Weather can cancel; ask at the castle box office.

Morcegos no Castelo

Friday 21 August, 20:30 · Castelo de São Jorge
Family night walk, ages 5+, €10 / €5. Official page and BOL or box office. The strongest in-town family booking this week once the Pessoa workshop ends.

Há Jazz no Parque Mayer — Marta Garrett “Assanhado” Quarteto

Sunday 23 August, 19:30 · Terraço do Capitólio
€5, M/6, 75 minutes. Capitólio listing. Best in-city Sunday if Cascais feels like too much travel.

Family and community

Weekdays: Pessoa(s) à escuta, 7–12, booked, through Friday. Weekend: bats at the castle (Fri) or Festas do Mar’s family area in Cascais (confirm the day’s kids’ stage on the municipal page). No additional central-Lisbon weekend workshop was source-verifiable for 22–23 August.

City usuals

Feira da Ladra: Tuesday and Saturday mornings at Campo de Santa Clara.
Time Out Market Lisboa: Group-friendly food hall; check hours.
Museu Calouste Gulbenkian: Jazz em Agosto has ended; the collections and gardens remain the weekday indoor anchor.
Quiosque Ribeira das Naus: Easy river pause when you do not want a ticketed night.

Practical notes

Checked against organiser and municipal pages on 21 August 2026. Jazz em Agosto and Operafest’s Caxias Turandot run are over; do not use last week’s pages. Confirm bookings, age limits, and trains. For an indoor fallback, see rainy-day things to do in Lisbon.