September 27 is generally a great time to visit Dublin. While there is a slight chance of rain (34%), showers are usually brief. Expect comfortable 15°C weather. As it's peak season for Dublin, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Dublin
Currency
EUR
€ Euro
Language
English
+1 more
Driving
Left side
Connect
As of July 2024, all of the city and its...
Safety
Very High Safety
GPI: 1.288
Dublin Weather Forecast for September 27
"Mild & Comfortable. Expect average highs of 15.4°C. 34% chance of rain."
What to Wear in Dublin in September
Based on historical data for September 27, Dublin typically experiences temperatures between 10.1°C and 15.4°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 34% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Dublin
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
15.4°C
Daytime Peak
Average Low
10.1°C
Nighttime Low
Feels Like
15.4°C
🌤️ Feels accurate
Rain Chance
34%
Avg 2mm if it rains
Cloud Cover
74%
Overcast
Pressure
1012.6 hPa
High volatility
Dublin Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 95% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 47 min to burn
Type III-IV
🟡 71 min to burn
Type V-VI
🟢 118 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
12.3°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
Business Day
Standard hours in Ireland
Flight Traffic
High
93/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~385
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Dublin
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:20
☀️ Noon
12:17
🌇 Sunset
18:14
⏱️ Daylight
11h 54m
Wind Speed
21.1 km/h
Moderate wind
Sunshine
6.3 hrs
Direct Sun (Cloud-free)
Humidity
82%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Dublin
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Dublin
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Mild discomfort possible for arthritic conditions.
Fish are active due to pressure changes.
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, Dublin on September 27 averages 15.4°C with a 34% precipitation probability. Wedding/Outdoor Event Score: 81/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Dublin Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 21
16.2°C • 22% rain
Score
89
September 20
16.4°C • 25% rain
Score
88
September 22
16.1°C • 22% rain
Score
88
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 27) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Dublin Worth Visiting on September 27?
Planning a trip to Dublin on September 27? 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 15.4°C with a 34% historical precipitation risk.
✈️ Travel Logistics: Approximately 385 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Ireland, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 14.4°C (polar plunge). Wave conditions are generally surfers only with heights around 1.27m.
📊 Historical Extremes: The hottest September 27 recorded in the last 30 years saw temperatures hit 16.9°C in 2016, while the coldest dropped to 2.8°C in 2020.