Stockholm · September · warmth

Warmest places to go from Stockholm in September

In September, the warmest well-known place within 15 hours of Stockholm is Aswan, Egypt, averaging 34.1 °C across day and night and 11.5 h sun a day, about 8h 54m each way by air. Without flying, it is Torun, Poland, averaging 18.5 °C across day and night, about 12h 12m each way by train, for about 46× less carbon (20.7 kg CO₂e return against 957 kg).

Every city at once, with and without flying: where is hot in September.

The 10 warmest places within 15 hours of Stockholm

Ranked on warmth in September alone, among well-known places (a Wikivoyage travel guide and at least 40,000 Wikipedia readers a year), one per area and at most three per country. The carbon is shown, not used to choose: the list further down is the other question, how much warmth each extra kilogram buys.

Aswan, Egypt34.1 °C · 11.5 h sun a day · mostly dryair ≈ 8h 54m · 957 kg CO₂e return
Sharm el-Sheikh, Egypt33.7 °C · 11.5 h sun a day · mostly dry · sea 28.7 °Cair ≈ 8h 24m · 868 kg CO₂e return
Luxor, Egypt33.6 °C · 11.6 h sun a day · mostly dryair ≈ 8h 42m · 914 kg CO₂e return
Aqaba, Jordan31.5 °C · 11.4 h sun a day · mostly dry · sea 27.8 °Cair ≈ 8h 12m · 894 kg CO₂e return
Sanliurfa, Turkey27.7 °C · 11.4 h sun a day · mostly dryair ≈ 7h 18m · 723 kg CO₂e return
Adana, Turkey27.5 °C · 11.1 h sun a day · 1.5 mm rain a dayair ≈ 7h 12m · 698 kg CO₂e return
Famagusta, Cyprus27.1 °C · 11.4 h sun a day · mostly dry · sea 28.6 °Cair ≈ 7h 24m · 737 kg CO₂e return
Kairouan, Tunisia27.0 °C · 10.7 h sun a day · mostly dryair ≈ 7h 6m · 677 kg CO₂e return
Rhodes, Greece27.0 °C · 11.8 h sun a day · mostly dry · sea 27.4 °Cair ≈ 7h · 666 kg CO₂e return
Batman, Turkey26.8 °C · 11.6 h sun a day · mostly dryair ≈ 7h 24m · 728 kg CO₂e return

Without flying

The warmest places the train reaches within 15 hours. Torun is 18.5 °C for 20.7 kg — about 46× less carbon than flying to Aswan.

Torun, Poland18.5 °C · 9.8 h sun a day · 1.2 mm rain a dayrail ≈ 12h 12m · 20.7 kg CO₂e return
Płock, Poland18.3 °C · 10.2 h sun a day · mostly dryrail ≈ 13h · 22.5 kg CO₂e return
Warsaw, Poland18.3 °C · 10.2 h sun a day · mostly dryrail ≈ 13h 42m · 23.9 kg CO₂e return
Frankfurt (Oder), Germany18.2 °C · 9.8 h sun a day · 1.2 mm rain a dayrail ≈ 12h 30m · 23.8 kg CO₂e return
Berlin, Germany18.2 °C · 10.0 h sun a day · mostly dryrail ≈ 12h · 23.9 kg CO₂e return
Bydgoszcz, Poland18.1 °C · 9.9 h sun a day · mostly dryrail ≈ 12h · 20.4 kg CO₂e return

≈ is the model's estimate (air times include getting to and through the airport); ✓ is a rail journey checked against a real timetable, with the date it was checked. Temperatures are historical daily means for 2023–2024, averaged across day and night, so afternoons run warmer.

The low-carbon trade-off

The warmest place you can reach from Stockholm in September within 15 hours is Sharm el-Sheikh, 33.7 °C, costing 868 kg CO₂e return. The lowest-carbon option is Örebro at 4.8 kg — 181× less carbon, for 19.6 degrees less warmth.

Every destination here is on the efficiency frontier: nowhere else this site covers is both warmer 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 Stockholm. Pick one to compare.

By rail or ferry By air

Carbon against warmth, September, departing Stockholm. Journeys of up to 15 hours each way.

What the 15-hour limit costs: at this budget Debrecen can only be reached by air — 335 kg CO₂e, in 5h 18m. Allow up to 24 hours and the train does the same journey for 39.3 kg in 21h 12m — 9× less carbon for 15h 54m more travelling.

September from Stockholm — 17 destinations on the frontier, 5 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Örebro, Sweden	Rail	4.8 kg	14.1 °C	8.1 h	2.2 mm	3h 48m
Linköping, Sweden	Rail	5.1 kg	14.7 °C	8.8 h	2.0 mm	4h
Visby, Sweden	Rail	5.6 kg	15.8 °C	9.8 h	1.6 mm	4h 12m
Ventspils, Latvia	Rail	8.7 kg	16.7 °C	9.8 h	2.4 mm	9h
Gdansk, Poland	Rail	16.4 kg	17.8 °C	9.8 h	1.1 mm	10h
Nyiregyhaza, Hungary	Air	324 kg	19.2 °C	9.7 h	2.7 mm	5h 12m
Debrecen, Hungary	Air	335 kg	19.5 °C	9.8 h	2.5 mm	5h 18m
Szolnok, Hungary	Air	342 kg	20.3 °C	9.5 h	1.9 mm	5h 18m
Split, Croatia	Air	443 kg	22.3 °C	10.2 h	4.7 mm	5h 54m
Shkoder, Albania	Air	483 kg	22.6 °C	10.2 h	5.1 mm	6h 6m
Taranto, Italy	Air	528 kg	24.3 °C	11.0 h	0.9 mm	6h 18m
Mytilene, Greece	Air	585 kg	24.6 °C	11.5 h	1.2 mm	6h 36m
OEdemis, Turkey	Air	616 kg	26.5 °C	11.6 h	0.3 mm	6h 48m
Kairouan, Tunisia	Air	677 kg	27.0 °C	10.7 h	0.7 mm	7h 6m
Birecik, Turkey	Air	720 kg	28.4 °C	11.4 h	0.1 mm	7h 18m
Tozeur, Tunisia	Air	734 kg	29.4 °C	10.3 h	0.3 mm	7h 24m
Sharm el-Sheikh, Egypt	Air	868 kg	33.7 °C	11.5 h	0.0 mm	8h 24m

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 Gdansk (16.4 kg, 17.8 °C) to Nyiregyhaza (324 kg, 19.2 °C) buys 1.4 °C more warmth for an extra 307 kg — 220 kg of CO₂e per degree. That single step is the most expensive warmth on the whole curve.

The pick of them

ÖrebroSweden4.8 kg CO₂e return14.1 °C · 8.1 h sun · 3h 48m by railmild and bright

GdanskPoland16.4 kg CO₂e return17.8 °C · 9.8 h sun · 10h by railwarm, bright and dry

Sharm el-SheikhEgypt868 kg CO₂e return33.7 °C · 11.5 h sun · 8h 24m by airwarm, bright and dry

The same month, asked differently

September answers differently depending on what you are after, and the lists genuinely diverge: the brightest places are not the hottest, and in summer the useful question stops being where is warm at all.

Where to stay in Sharm el-Sheikh

Places to stay in Sharm el-Sheikh, Egypt, on a live map. Prices and availability come from Stay22 and its booking partners.

Search places to stay in Sharm el-Sheikh →Opens the booking search in a new tab. Same partners as the map below.

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 Stockholm

September from elsewhere

Photo credits

Örebro: Liberaler Humanist (image 1), Arild Vågen (image 2, 3, 4 & 5), CC BY-SA 3.0, via Wikimedia Commons
Gdansk: Diego Delso, CC BY-SA 3.0, via Wikimedia Commons
Sharm el-Sheikh: Tanya Dedyukhina, CC BY 3.0, via Wikimedia Commons
Aswan: Vyacheslav Argenberg, CC BY 4.0, via Wikimedia Commons
Luxor: Roland Unger, CC BY-SA 3.0, via Wikimedia Commons
Aqaba: Sana Janakat, CC BY-SA 4.0, via Wikimedia Commons
Sanliurfa: Damien Halleux Radermecker, CC BY-SA 2.0, via Wikimedia Commons
Adana: Anatolianpride, Public domain, via Wikimedia Commons
Kairouan: Unknown authorUnknown author, Public domain, via Wikimedia Commons
Rhodes: Bernard Gagnon, CC BY-SA 4.0, via Wikimedia Commons
Batman: Ferhat 72 at Turkish Wikipedia, Public domain, via Wikimedia Commons
Torun: Andrzej Otrębski, CC BY-SA 4.0, via Wikimedia Commons
Płock: Aquarius 24, CC BY-SA 4.0, via Wikimedia Commons
Warsaw: Rhododendrites, CC BY-SA 4.0, via Wikimedia Commons
Berlin: Thomas Wolf, www.foto-tw.de, CC BY-SA 3.0, via Wikimedia Commons
Bydgoszcz: Jan Paweł Bochen, CC BY 4.0, via Wikimedia Commons

Questions

Where is the warmest place to go from Stockholm in September?

Sharm el-Sheikh, Egypt, at 33.7 °C. Reaching it emits 868 kg CO₂e return, travelling 8h 24m each way by air (modelled).

Can I get somewhere warm from Stockholm in September without flying?

Yes. Gdansk reaches 17.8 °C and is reachable by rail or ferry in 10h (modelled), emitting 16.4 kg CO₂e return — though Sharm el-Sheikh is warmer still, if you fly.

How much carbon does a return trip from Stockholm to Sharm el-Sheikh produce?

868 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.