Berlin · September · sunshine

Sunniest places to go from Berlin in September

The sunniest place you can reach from Berlin in September within 15 hours is Izmir at 11.6 h, costing 476 kg CO₂e return. The lowest-carbon option is Zary at 4.5 kg — 106× less carbon for 2.0 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.

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

By rail or ferry By air

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

What the 15-hour limit costs: at this budget Mangalia can only be reached by air — 372 kg CO₂e, in 5h 30m. Allow up to 24 hours and the train does the same journey for 43.6 kg in 22h 12m — 9× less carbon for 16h 42m more travelling.

September from Berlin — 4 destinations on the frontier, 2 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Zary, Poland	Rail	4.5 kg	17.7 °C	9.6 h	1.7 mm	4h 6m
Kaunas, Lithuania	Rail	21.8 kg	17.5 °C	10.6 h	1.1 mm	12h 6m
Mangalia, Romania	Air	372 kg	21.1 °C	11.1 h	1.7 mm	5h 30m
Izmir, Turkey	Air	476 kg	24.9 °C	11.6 h	1.0 mm	6h

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 Kaunas (21.8 kg, 10.6 h) to Mangalia (372 kg, 11.1 h) buys 0.5 hours more sunshine for an extra 350 kg — 700 kg of CO₂e per hour. That single step is the most expensive sunshine on the whole curve.

The pick of them

ZaryPoland4.5 kg CO₂e return17.7 °C · 9.6 h sun · 4h 6m by railwarm overall KaunasLithuania21.8 kg CO₂e return17.5 °C · 10.6 h sun · 12h 6m by railwarm, bright and dry IzmirTurkey476 kg CO₂e return24.9 °C · 11.6 h sun · 6h by airwarm, bright and dry

If you'd rather have heat than sunshine

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

Places to stay in Izmir, 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 Berlin

September from elsewhere

Questions

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

Izmir, Turkey, at 11.6 h. Reaching it emits 476 kg CO₂e return, travelling 6h each way by air.

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

Yes. Kaunas reaches 10.6 h and is reachable by rail or ferry in 12h 6m, emitting 21.8 kg CO₂e return — though Izmir is sunnier still, if you fly.

How much carbon does a return trip from Berlin to Izmir produce?

476 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.