Portugal Lisbon Weather in May — Climate Guide
May in Lisbon is Excellent
Lisbon Weather in May — Quick Answer
As of 2026- Avg temp
- 22° / 14°
- Rainfall
- 45mm · 7 days
- Crowds
- Busy
As of 2026, Lisbon in May averages a high of 22°C and low of 14°C with 45mm of rain over about 7 days. T-shirts + light cardigan. Long pants over shorts. Light jacket for evenings. Sunglasses + sunscreen.
May is Excellent for Lisbon.
May is full spring tilting summer. Daytime 22°C, nighttime 14°C, 14-15 hours daylight.
Jacaranda trees (introduced from Brazil 1920s) bloom purple mid-May to mid-June — Largo do Carmo + Avenida Dom Carlos I are the iconic photo spots. The most-photogenic Lisbon month.
Travel score
Spring + Fátima pilgrimage + Atlantic top
May Weather at a Glance
Lisbon in May averages 72°F / 22°C high and 55°F / 13°C low. 9 hours sunshine, 40mm rain, 7 rainy days. Top season — lilac + jasmine + miradouro + Cascais beach. Sunrise 6:15 AM, sunset 8:30 PM.
May Travel Advice
Long-sleeve + T-shirt + light jacket + sneakers. May 13 Fátima Pilgrimage (religious event, some hotel surge) + Rock in Rio Lisboa (varies, June, world-top music festival) prep.
Flying In from Overseas
Asia children's-day + Buddha's Birthday holiday peak — Seoul-LIS $800-1,210 (connections). Golden Week 1.5× flights.
May Pricing Trends
Peak season — Chiado 4-star $145-240/night. 5-star $320-605.
Lisbon May Weather Stats
Avg High
22°C
Avg Low
14°C
Rainy Days
7
45mm total
Sunshine
9.6h
Daily avg
Humidity
64%
Comfortable
UV Index
7
High
Wind
11 km/h
Gusts 24
Sea Temp
17°C
Cool
Crowds
Busy
At attractions
May Sunrise & Sunset
Air Quality
PM2.5
11 μg/m³
PM10
20 μg/m³
Status
Good
Feels-Like Temperature & Wind
Feels like
Daytime
22°C
Nighttime
13°C
Humidity and wind affect how the actual temperature feels.
Wind
11 km/h
Max gust 24 km/h
Activities Recommended for May
May Travel Pros & Cons
Pros
- Jacaranda purple bloom (mid-May)
- Best weather + 15-hour daylight
- Outdoor everything
Cons
- Hotel rates at peak
- Tourist crowds at maximum
- Pena Palace 4-6 weeks ahead booking
May Events & Festivals
- Jacaranda blossom peak (mid-May)
- Fátima pilgrimage (May 13)
- Hotel rates at peak
Lisbon in May — Full Picture
May is full spring tilting summer. Daytime 22°C, nighttime 14°C, 14-15 hours daylight.
Jacaranda trees (introduced from Brazil 1920s) bloom purple mid-May to mid-June — Largo do Carmo + Avenida Dom Carlos I are the iconic photo spots. The most-photogenic Lisbon month.
Fátima pilgrimage (May 13) — 600,000+ pilgrims walk to Fátima sanctuary 130km north. Lisbon hotels not directly affected but trains crowded.
What to Wear & What to Pack
T-shirts + light cardigan. Long pants over shorts. Light jacket for evenings. Sunglasses + sunscreen.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current19.3°C
12°C
8.7/mo
Summer (Jun·Jul·Aug)
27°C
17.7°C
1.7/mo
Autumn (Sep·Oct·Nov)
21.7°C
14°C
8/mo
Winter (Dec·Jan·Feb)
14.3°C
8.3°C
12.3/mo
Lisbon Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 14° | 8° | 14d·110mm | 4.6h | 76% | 2 | Quiet | Low season | |
| 15° | 8° | 11d·80mm | 5.9h | 73% | 3 | Quiet | Low season | |
| 17° | 10° | 10d·60mm | 6.9h | 70% | 4 | Moderate | Shoulder | |
| April (Best) | 19° | 12° | 9d·60mm | 8.1h | 67% | 5 | Busy | Peak |
| May (Best) | 22° | 14° | 7d·45mm | 9.6h | 64% | 7 | Busy | Peak |
| June (Best) | 25° | 17° | 3d·16mm | 11h | 64% | 8 | Very busy | Peak |
| July (Best) | 28° | 18° | 1d·4mm | 11.5h | 60% | 9 | Very busy | Peak |
| August (Best) | 28° | 18° | 1d·6mm | 11h | 60% | 9 | Very busy | Peak |
| September (Best) | 26° | 17° | 4d·25mm | 9h | 65% | 7 | Busy | Peak |
| 22° | 14° | 8d·80mm | 6.6h | 71% | 4 | Moderate | Shoulder | |
| 17° | 11° | 12d·130mm | 5h | 78% | 2 | Moderate | Shoulder | |
| 14° | 9° | 12d·110mm | 4.6h | 77% | 2 | Moderate | Peak |
View Other Months
Lisbon May Hotel Picks
Frequently Asked Questions
Is May a good time to visit Lisbon?
Lisbon in May is Excellent. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Lisbon in May?
Lisbon May averages a high of 22°C and a low of 14°C.
Does it rain much in Lisbon in May?
Lisbon May averages 45mm of rainfall over about 7 rainy days.
What should I wear in Lisbon in May?
T-shirts + light cardigan. Long pants over shorts. Light jacket for evenings. Sunglasses + sunscreen.
What time are sunrise and sunset in Lisbon in May?
Lisbon May sunrise is 06:30 and sunset is 20:50, with 14h 20m of daylight.
What's the air quality like in Lisbon in May?
Lisbon May air quality (AQI) averages 34, rated Good. PM2.5 averages 11μg/m³.
What activities are recommended in Lisbon in May?
In May, Lisbon is great for Jacaranda photo walks (mid-May), Outdoor terraces, Sintra Pena Palace + gardens.
Is May peak season in Lisbon?
Lisbon May crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Lisbon
View Other Months
Planning a May trip to Lisbon?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.