Frankfurt · September · sunshine

Sunniest places to go from Frankfurt in September

The sunniest place you can reach from Frankfurt in September within 15 hours is Fethiye at 11.8 h, costing 558 kg CO₂e return. The lowest-carbon option is Eisenach at 4.4 kg — 127× less carbon for 1.7 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.

Where they are. Solid lines are rail or ferry, dashed are flights, from Frankfurt. Pick one to compare.

By rail or ferry By air

Carbon against sunshine, September, departing Frankfurt. Journeys of up to 15 hours each way.

What the 15-hour limit costs: at this budget Trapani can only be reached by air — 347 kg CO₂e, in 5h 18m. Allow up to 24 hours and the train does the same journey for 40.7 kg in 20h 54m — 9× less carbon for 15h 36m more travelling.

September from Frankfurt — 4 destinations on the frontier, 2 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Eisenach, Germany	Rail	4.4 kg	16.7 °C	10.1 h	2.1 mm	4h 6m
Aix-en-Provence, France	Rail	22.8 kg	19.3 °C	10.8 h	2.1 mm	12h 36m
Trapani, Italy	Air	347 kg	24.2 °C	11.3 h	1.2 mm	5h 18m
Fethiye, Turkey	Air	558 kg	26.0 °C	11.8 h	1.6 mm	6h 30m

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 Aix-en-Provence (22.8 kg, 10.8 h) to Trapani (347 kg, 11.3 h) buys 0.5 hours more sunshine for an extra 324 kg — 648 kg of CO₂e per hour. That single step is the most expensive sunshine on the whole curve.

The pick of them

EisenachGermany4.4 kg CO₂e return16.7 °C · 10.1 h sun · 4h 6m by railwarm overall Aix-en-ProvenceFrance22.8 kg CO₂e return19.3 °C · 10.8 h sun · 12h 36m by railwarm overall FethiyeTurkey558 kg CO₂e return26.0 °C · 11.8 h sun · 6h 30m by airwarm overall

If you'd rather have heat than sunshine

September answers differently depending on what you're after. The warmest destinations from Frankfurt 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 Frankfurt

September from elsewhere

Questions

Where is the sunniest place to go from Frankfurt in September?

Fethiye, Turkey, at 11.8 h. Reaching it emits 558 kg CO₂e return, travelling 6h 30m each way by air.

Can I get somewhere sunny from Frankfurt in September without flying?

Yes. Aix-en-Provence reaches 10.8 h and is reachable by rail or ferry in 12h 36m, emitting 22.8 kg CO₂e return — though Fethiye is sunnier still, if you fly.

How much carbon does a return trip from Frankfurt to Fethiye produce?

558 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.