☀️ Yes! Average temperature: 20°C
It's mild at 20°C — warm enough for sightseeing but you may want a light layer for evenings. Lisbon in May has an average air temperature of 20°C with sea temperatures around 17°C. You can expect 10 hours of sunshine per day and 30mm of rainfall, which means minimal rainfall — mostly dry and sunny.
At 17°C the sea is quite cold. A wetsuit is recommended if you plan to swim. With 10 hours of daily sunshine, there's plenty of time to enjoy outdoor activities. Pack light layers, a jumper for evenings, comfortable walking shoes, and a rain jacket.
Lisbon offers mild weather in May — great for culture and sightseeing. The average flight time from the UK is comfortable and there are usually good deals available for this time of year.
Here's how Lisbon stacks up against similar destinations in May:
| Destination | Air °C | Sea °C | Rain | Sun |
|---|---|---|---|---|
| Lisbon | 20°C | 17°C | 30mm | 10h |
| Alicante | 20°C | 19°C | 25mm | 10h |
| Amalfi Coast | 20°C | 19°C | 30mm | 9h |
| Cape Town | 20°C | 16°C | 60mm | 7h |
| Dubrovnik | 20°C | 19°C | 50mm | 9h |
| Hvar | 20°C | 19°C | 35mm | 9h |
See how Lisbon's temperature changes throughout the year:
Looking for somewhere warm in May? These destinations are all 25°C+:
Yes, Lisbon in May has average temperatures of 20°C, making it a warm destination. Sea temperatures are 17°C.
The sea at 17°C is cold — a wetsuit is recommended.
Pack light layers, a jumper for evenings, comfortable walking shoes, and a rain jacket.
May is decent for visiting Lisbon — not too hot, good for sightseeing.
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