April 18 is generally a great time to visit Porto. While there is a slight chance of rain (39%), showers are usually brief. Expect comfortable 18°C weather. Porto is seeing high visitor numbers, so iconic spots may be busier than usual. Note: April 18 is Good Friday in Porto, so expect special events, closures, and festive atmosphere.
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Essential Travel Info for Porto
Currency
EUR
€ Euro
Language
Portuguese
Driving
Right side
Connect
Porto has 4G from all Portuguese carrier...
Safety
Very High Safety
GPI: 1.301
Porto Weather Forecast for April 18
"Mild & Comfortable. Expect average highs of 17.7°C. 39% chance of rain."
What to Wear in Porto in April
Based on historical data for April 18, Porto typically experiences temperatures between 10.5°C and 17.7°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 39% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Porto
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
17.7°C
Daytime Peak
Average Low
10.5°C
Nighttime Low
Feels Like
17.7°C
🌤️ Feels accurate
Rain Chance
39%
Avg 4.4mm if it rains
Cloud Cover
64%
Overcast
Pressure
1014.5 hPa
Medium volatility
Porto Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 89% 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
🔴 21 min to burn
Type III-IV
🟡 32 min to burn
Type V-VI
🟢 53 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
13.8°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
Busy
70/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~172
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Porto
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:52
☀️ Noon
12:34
🌇 Sunset
19:17
⏱️ Daylight
13h 25m
Wind Speed
20.3 km/h
Moderate wind
Sunshine
10.2 hrs
Direct Sun (Cloud-free)
Humidity
78%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Porto
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 Porto
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
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Porto on April 18 averages 17.7°C with a 39% precipitation probability. Wedding/Outdoor Event Score: 85/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Porto 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
18.2°C • 28% rain
Score
91
April 25
18.3°C • 25% rain
Score
91
April 14
17.8°C • 32% rain
Score
89
💡 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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🌍 Explore the same date in different destinations around the world
📍 Is Porto Worth Visiting on April 18?
Planning a trip to Porto 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 17.7°C with a 39% historical precipitation risk.
🎉 Local Event: The date coincides with Good Friday, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 172 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Portugal, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 15.9°C (polar plunge). Wave conditions are generally surfers only with heights around 2.12m.
📊 Historical Extremes: The hottest April 18 recorded in the last 30 years saw temperatures hit 24.4°C in 2023, while the coldest dropped to 6.1°C in 2016.