Sunniest places to go from Dublin in September
The sunniest place you can reach from Dublin in September within 15 hours is Fethiye at 11.8 h, costing 828 kg CO₂e return. The lowest-carbon option is Colwyn Bay at 42.2 kg — 20× less carbon for 5.0 h less.
Every destination here is on the efficiency frontier: nowhere else in Europe is both sunnier in September and lower in carbon. Anything a better option beats outright has been left out.
By rail or ferry By air
| Destination | How | CO₂e return | Temp | Sun/day | Rain/day | Journey |
|---|---|---|---|---|---|---|
| Colwyn Bay, United Kingdom | Air | 42.2 kg | 15.1 °C | 6.8 h | 4.6 mm | 3h 42m |
| Ballymena, United Kingdom | Air | 42.8 kg | 12.9 °C | 7.3 h | 3.5 mm | 3h 42m |
| Barrow in Furness, United Kingdom | Air | 54.5 kg | 14.7 °C | 7.8 h | 4.9 mm | 3h 48m |
| Plymouth, United Kingdom | Air | 90.5 kg | 16.0 °C | 8.5 h | 4.0 mm | 4h |
| Colchester, United Kingdom | Air | 128 kg | 16.5 °C | 9.0 h | 2.4 mm | 4h 12m |
| Lorient, France | Air | 164 kg | 17.2 °C | 9.4 h | 2.7 mm | 4h 24m |
| La Rochelle, France | Air | 221 kg | 18.7 °C | 10.0 h | 3.5 mm | 4h 42m |
| Bragança, Portugal | Air | 323 kg | 17.0 °C | 10.8 h | 2.2 mm | 5h 12m |
| Granada, Spain | Air | 454 kg | 21.6 °C | 11.5 h | 0.9 mm | 5h 54m |
| Fethiye, Turkey | Air | 828 kg | 26.0 °C | 11.8 h | 1.6 mm | 7h 54m |
Warm is not the same as pleasant, which is why sunshine and rainfall are shown alongside temperature. All three are ERA5 monthly means for 2023–2024.
Where the curve breaks
The frontier is gentle until it isn't. Going from Granada (454 kg, 11.5 h) to Fethiye (828 kg, 11.8 h) buys 0.3 hours more sunshine for an extra 374 kg — 1246 kg of CO₂e per hour. That single step is the most expensive sunshine on the whole curve.
The pick of them
If you'd rather have heat than sunshine
September answers differently depending on what you're after. The warmest destinations from Dublin in September are a different list — hours of sunshine and degrees of warmth come apart, especially early and late in the year.
Where to stay in Fethiye
Places to stay in Fethiye, Turkey, on a live map. Prices and availability come from Stay22 and its booking partners.
Affiliate disclosure. A booking made through this map may earn 0xCarbon a commission, at no extra cost to you. It changes nothing above it: the emissions figures come from UK Government conversion factors and are computed before anyone is paid anything.See the method.
Other months from Dublin
September from elsewhere
- Amsterdam
- Barcelona
- Berlin
- Birmingham
- Bristol
- Brussels
- Cardiff
- Copenhagen
- Dublin
- Edinburgh
- Frankfurt
- Glasgow
- Leeds
- Lisbon
- Liverpool
- London
- Madrid
- Manchester
- Milan
- Munich
- Newcastle
- Nottingham
- Oslo
- Paris
- Prague
- Rome
- Sheffield
- Southampton
- Stockholm
- Vienna
- Warsaw
- Zurich
Questions
Where is the sunniest place to go from Dublin in September?
Fethiye, Turkey, at 11.8 h. Reaching it emits 828 kg CO₂e return, travelling 7h 54m each way by air.
Can I get somewhere sunny from Dublin in September without flying?
Not within 15 hours. Every destination on this frontier requires flying in September.
How much carbon does a return trip from Dublin to Fethiye produce?
828 kg CO₂e for one person, return, by air. That uses the UK Government's 2026 conversion factors, including radiative forcing for flights.
Carbon uses UK Government (DESNZ/DEFRA) 2026 conversion factors applied to great-circle distance, with radiative forcing included for flights. Rail journey times are modelled estimates, not timetabled services. Full method · download the data.