Is May a good month to visit Lisbon?

Depends what you want. Lisbon in May is for indoor culture, food and music — not beach. Sea around 18°C — local-only territory.

Can you swim in Lisbon in May?

Sea is around 17.8°C — local-only territory in May.

What's the average rainfall in Lisbon in May?

About 44 mm on the 1991-2020 baseline — moderate.

Is May crowded in Lisbon?

Manageable — May is shoulder season in Lisbon. Most venues open without the high-summer queues. Sweet spot for many travellers.

Lisbon · May 2026

Lisbon weather in May 2026

Mild, jacket-optional days — May averages a 19.8°C high. Beach days possible on the warm side; not the high-summer vibe. Sea 17.8°C — cold for tourists.

Avg high

19.8°C

Avg low

14.1°C

Rainfall

44.1 mm

Moderate

Sun

0 h/day

Sea temp

17.8°C

Cold for tourists

What to wear

Layers. Long sleeves baseline, lighter under, jacket for evenings. rain isn't constant but lands hard when it does.

What’s open in May

Year-round spots plus seasonal venues whose own season covers May. Tap through for the editorial detail page.

Common questions

Is May a good month to visit Lisbon?: Depends what you want. Lisbon in May is for indoor culture, food and music — not beach. Sea around 18°C — local-only territory.
Can you swim in Lisbon in May?: Sea is around 17.8°C — local-only territory in May.
What's the average rainfall in Lisbon in May?: About 44 mm on the 1991-2020 baseline — moderate.
Is May crowded in Lisbon?: Manageable — May is shoulder season in Lisbon. Most venues open without the high-summer queues. Sweet spot for many travellers.