Weather: Lisbon — May

May is typically excellent for visiting Lisbon, with average highs of 20°C and around 4 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.

Evenings in Lisbon during May are mild at 15°C. A light cardigan or long sleeves for evenings is usually enough. Outdoor dining remains comfortable, making it a great time to enjoy rooftop bars and terrace restaurants.

With highs of 20°C and lows of 15°C in May, we recommend: Comfortable walking shoes. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.

Lisbon typically sees around 4 rainy days in May. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.

May is suitable for swimming in Lisbon, though the water may feel refreshing at first. Air temperatures average 20°C, and most swimmers find it enjoyable once they're in. Midday is usually the warmest time for a dip.

In May, Lisbon gets approximately 14.2 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.

Yes, May is peak season in Lisbon. Expect higher prices for accommodation and more crowds at popular attractions, but also the best weather conditions. Book hotels and major attractions in advance to secure availability and better rates.