The month in detail
What to expect in May
Spring marks the start of the good season in Lisbon. Temperatures rise (22°C) and tourists have not yet arrived en masse. Rain risk remains low (19% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if July (9.7/10) remains theoretically better.
May ranks 5 out of 12 months in Lisbon. Compared to April: +4°C daytime, 7 pts fewer rainy days, +1.3h of sun per day.
This month's conditions
What it's like in May
UV index
8 · high
sunscreen and hat advised
Feels like
comfortable
12°
Sea
18°C
cold, for the brave
Daylight
14.1h of daylight
Air quality
good
AQI 30
Compare
Is May the right month?
The best month in Lisbon is July (9.7/10), 1.3 pt higher than May.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Lisbon
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Lisbon
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.
Country · Portugal
🗣️LanguagePortuguese
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘCheap · 2/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘ+1.16°C/decade
🔥Hottest monthAugust · 28°C
❄️Coolest monthJanuary · 15°C
🌧️Rainiest month ⓘNovember · 33%
🏖️ Beach holiday
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
🛂VisaSchengen · 90 days
Explore
Other destinations in May
If May doesn't convince you for this destination, compare with others.
Location
Where is Lisbon ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
PortugalTemperate oceanic climate with a 9.7 → 4.4 gap between best and worst month. 10 years of ERA5 data to choose by project.
38.72°N · 9.13°W
Questions
Frequently asked questions
What is the best time to visit Lisbon?
July is the best month with 27.0°C highs, 18.0°C lows, 11.3h of sunshine and 2.0% rainy days. The months of July & August offer comparable conditions.
How many hours of sunshine does Lisbon get in July?
Lisbon averages 11.3 sunshine hours per day in July. It is the sunniest month with a climate score of 9.6/10.
What is the rainiest month in Lisbon?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Lisbon in July?
In July, overnight lows reach 18.0°C, while afternoon highs average 27.0°C.
Is Lisbon good in winter?
In winter (December-February), Lisbon scores 4.2/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 9.6/10.
When should you avoid Lisbon?
January is the most difficult month to visit Lisbon, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Lisbon in May?
In May, the sea averages 18°C in Lisbon: cold, for the brave. Best left to hardened swimmers or those with a wetsuit.
Do you need sun protection in Lisbon in May?
The average UV index reaches 8 in May in Lisbon (high), with about 14.1h of daylight. Sunscreen and hat advised.