April 18 is generally a great time to visit Lisbon. While there is a slight chance of rain (26%), showers are usually brief. Expect comfortable 19°C weather. It's a quieter period for Lisbon, ideal for those who prefer unhurried sightseeing. Note: April 18 is Good Friday in Lisbon, so expect special events, closures, and festive atmosphere.
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Essential Travel Info for Lisbon
Currency
EUR
€ Euro
Language
Portuguese
Driving
Right side
Connect
All of Lisbon has 4G from all Portuguese...
Safety
Very High Safety
GPI: 1.301
Lisbon Weather Forecast for April 18
"Mild & Comfortable. Expect average highs of 18.7°C. 26% chance of rain."
What to Wear in Lisbon in April
Based on historical data for April 18, Lisbon typically experiences temperatures between 12.5°C and 18.7°C. We recommend packing light jacket, long pants to stay comfortable. With a 26% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Lisbon
Smart Suitcase
- Light Jacket
- Long Pants
Average High
18.7°C
Daytime Peak
Average Low
12.5°C
Nighttime Low
Feels Like
18.7°C
🌤️ Feels accurate
Rain Chance
26%
Avg 1.5mm if it rains
Cloud Cover
56%
Overcast
Pressure
1015 hPa
Medium volatility
Lisbon Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 93% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 19:00
Type I-II
🔴 19 min to burn
Type III-IV
🟡 29 min to burn
Type V-VI
🟢 48 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
14.2°C
Pleasant
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Holiday
Good Friday
Flight Traffic
Quiet
26/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~323
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Lisbon
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:57
☀️ Noon
12:37
🌇 Sunset
19:16
⏱️ Daylight
13h 19m
Wind Speed
22.2 km/h
Moderate wind
Sunshine
10.8 hrs
Direct Sun (Cloud-free)
Humidity
75%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Lisbon
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Lisbon
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Lisbon on April 18 averages 18.7°C with a 26% precipitation probability. Wedding/Outdoor Event Score: 92/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Lisbon Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
April 24
19.8°C • 13% rain
Score
100
April 25
19.9°C • 12% rain
Score
100
April 23
19.5°C • 18% rain
Score
97
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (April 18) in other destinations
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United Kingdom
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🌍 Explore the same date in different destinations around the world
📍 Is Lisbon Worth Visiting on April 18?
Planning a trip to Lisbon on April 18? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 18.7°C with a 26% historical precipitation risk.
🎉 Local Event: The date coincides with Good Friday, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 323 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 6 vaccinations are recommended for Portugal, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 17°C (polar plunge). Wave conditions are generally surfers only with heights around 1.21m.
📊 Historical Extremes: The hottest April 18 recorded in the last 30 years saw temperatures hit 26.3°C in 2023, while the coldest dropped to 9.9°C in 2019.