Paris · September · sunshine

Sunniest places to go from Paris in September

The sunniest place you can reach from Paris in September within 15 hours is Alexandria at 11.9 h, costing 762 kg CO₂e return. The lowest-carbon option is Dieppe at 4.4 kg — 173× less carbon for 3.0 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 Paris. Pick one to compare.

By rail or ferry By air

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

What the 15-hour limit costs: at this budget Granada can only be reached by air — 348 kg CO₂e, in 5h 18m. Allow up to 24 hours and the train does the same journey for 40.8 kg in 20h 54m — 9× less carbon for 15h 36m more travelling.

September from Paris — 7 destinations on the frontier, 4 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Dieppe, France	Rail	4.4 kg	17.4 °C	8.9 h	3.2 mm	4h 6m
Saint-Dizier, France	Rail	5.7 kg	17.5 °C	9.4 h	3.1 mm	4h 36m
Chalon-sur-Saône, France	Rail	8.8 kg	18.0 °C	9.9 h	2.9 mm	6h 6m
Aix-en-Provence, France	Rail	18.8 kg	19.3 °C	10.8 h	2.1 mm	10h 42m
Tomelloso, Spain	Air	292 kg	21.3 °C	11.1 h	1.4 mm	5h
Granada, Spain	Air	348 kg	21.6 °C	11.5 h	0.9 mm	5h 18m
Alexandria, Egypt	Air	762 kg	27.4 °C	11.9 h	0.0 mm	7h 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 Granada (348 kg, 11.5 h) to Alexandria (762 kg, 11.9 h) buys 0.4 hours more sunshine for an extra 414 kg — 1035 kg of CO₂e per hour. That single step is the most expensive sunshine on the whole curve.

The pick of them

DieppeFrance4.4 kg CO₂e return17.4 °C · 8.9 h sun · 4h 6m by railwarm but wet Aix-en-ProvenceFrance18.8 kg CO₂e return19.3 °C · 10.8 h sun · 10h 42m by railwarm overall AlexandriaEgypt762 kg CO₂e return27.4 °C · 11.9 h sun · 7h 30m 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 Paris 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 Alexandria

Places to stay in Alexandria, Egypt, 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 Paris

September from elsewhere

Questions

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

Alexandria, Egypt, at 11.9 h. Reaching it emits 762 kg CO₂e return, travelling 7h 30m each way by air.

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

Yes. Aix-en-Provence reaches 10.8 h and is reachable by rail or ferry in 10h 42m, emitting 18.8 kg CO₂e return — though Alexandria is sunnier still, if you fly.

How much carbon does a return trip from Paris to Alexandria produce?

762 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.