Dublin · AutumnMonth summary
Dublin weather in September
⚠️ Fair
🌡️ Temperature min / max
11°C – 17°C
🌧 Rainy days
46% of days
☀️ Sunshine
8.9h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
6.8/10
📅 📅 Best month
June (7.1/10)
Quick decision
Should you visit Dublin in September?
⚠️ Fair
✅ Yes if: you want to explore the city on foot without suffering from heat.
❌ No if: you're looking for a beach destination — water and air are still cool.
Our take: Dublin in September is possible but June offers a score of 7.1/10 vs 6.8.
By trip type
Dublin in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in September
🎯 Good family period — decent temperatures and sites accessible without crowds Autumn marks the end of peak season in Dublin. Temperatures drop (17°C) and rain returns (46% of days). With 46% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. June (7.1/10) is significantly better if possible.
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All months for Dublin
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌦️ January | 4°C | 8°C | 41% | 2.2 | 4.2h | 3.5/10 |
| 🌦️ February | 4°C | 9°C | 48% | 2.5 | 5.4h | 3.8/10 |
| 🌦️ March | 5°C | 10°C | 45% | 2.5 | 7.4h | 4.2/10 |
| 🌦️ April | 6°C | 12°C | 41% | 2.4 | 10.4h | 5.5/10 |
| 🌦️ May | 9°C | 15°C | 40% | 1.9 | 12.6h | 7.0/10 |
| 🌦️ June | 12°C | 18°C | 48% | 2.7 | 12.0h | 7.1/10 |
| 🌦️ July | 13°C | 19°C | 47% | 2.6 | 10.9h | 7.1/10 |
| 🌦️ August | 13°C | 19°C | 45% | 2.6 | 10.7h | 7.1/10 |
| 🌦️ September | 11°C | 17°C | 46% | 3.1 | 8.9h | 6.8/10 |
| 🌦️ October | 9°C | 14°C | 46% | 3.0 | 6.6h | 4.5/10 |
| 🌦️ November | 6°C | 11°C | 44% | 3.0 | 4.7h | 4.0/10 |
| 🌦️ December | 6°C | 9°C | 45% | 2.8 | 2.7h | 2.8/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Dublin averages 17°C, 46% rainy days and 8.9h of sunshine per day. Overall weather score: 6.8/10.
See methodology →
Comparison
September vs June (best month)
The best month is June (score 7.1/10). Difference:
- 🌡️ Max temperature : +1°C
- 🌧 Rainy days : +2%
- ☀️ Sunshine : +3.1h/day
FAQ
FAQ — Dublin in September
Is September a good time to visit Dublin?
September is an acceptable time for Dublin (score 6.8/10). Conditions are decent but not optimal — consider June (7.1/10) if possible.
What to do in Dublin in September?
With 17°C max and 8.9h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Dublin
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