Warmest places to go from Barcelona in September
In September, the warmest well-known place within 15 hours of Barcelona is Aswan, Egypt, averaging 34.1 °C across day and night and 11.5 h sun a day, about 8h 6m each way by air. Without flying, it is Almería, Spain, averaging 24.9 °C across day and night, about 10h 6m each way by train, for about 45× less carbon (19.0 kg CO₂e return against 863 kg).
Every city at once, with and without flying: where is hot in September.
The 10 warmest places within 15 hours of Barcelona
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 6m · 863 kg CO₂e return
Sharm el-Sheikh, Egypt33.7 °C · 11.5 h sun a day · mostly dry · sea 28.7 °Cair ≈ 7h 54m · 824 kg CO₂e return
Luxor, Egypt33.6 °C · 11.6 h sun a day · mostly dryair ≈ 7h 54m · 829 kg CO₂e return
Aqaba, Jordan31.5 °C · 11.4 h sun a day · mostly dry · sea 27.8 °Cair ≈ 7h 48m · 812 kg CO₂e return
Sanliurfa, Turkey27.7 °C · 11.4 h sun a day · mostly dryair ≈ 7h 42m · 796 kg CO₂e return
Adana, Turkey27.5 °C · 11.1 h sun a day · 1.5 mm rain a dayair ≈ 7h 18m · 725 kg CO₂e return- Famagusta, Cyprus27.1 °C · 11.4 h sun a day · mostly dry · sea 28.6 °Cair ≈ 7h 18m · 715 kg CO₂e return
Kairouan, Tunisia27.0 °C · 10.7 h sun a day · mostly dryair ≈ 4h 42m · 236 kg CO₂e return
Rhodes, Greece27.0 °C · 11.8 h sun a day · mostly dry · sea 27.4 °Cair ≈ 6h 36m · 581 kg CO₂e return
Batman, Turkey26.8 °C · 11.6 h sun a day · mostly dryair ≈ 7h 54m · 838 kg CO₂e return
Without flying
The warmest places the train reaches within 15 hours. Almería is 24.9 °C for 19.0 kg — about 45× less carbon than flying to Aswan.
Almería, Spain24.9 °C · 11.3 h sun a day · mostly dry · sea 25.1 °Crail ≈ 10h 6m · 19.0 kg CO₂e return
Seville, Spain23.8 °C · 10.9 h sun a day · mostly dryrail ≈ 7h 30m · 24.4 kg CO₂e return- Marbella, Spain23.4 °C · 11.3 h sun a day · mostly dry · sea 22.4 °Crail ≈ 8h 54m · 24.0 kg CO₂e return
- Elche, Spain22.8 °C · 10.7 h sun a day · 2.1 mm rain a day · sea 26.0 °Crail ≈ 7h 6m · 12.5 kg CO₂e return
- Anzio, Italy22.7 °C · 10.9 h sun a day · 2.4 mm rain a day · sea 25.0 °Crail ≈ 14h 36m · 25.7 kg CO₂e return
Lido di Ostia, Italy22.5 °C · 10.7 h sun a day · 2.0 mm rain a day · sea 24.8 °Crail ≈ 14h 12m · 24.9 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 Barcelona in September within 15 hours is Edfu, 34.0 °C, costing 846 kg CO₂e return. The lowest-carbon option is Tortosa at 4.5 kg — 188× less carbon, for 11.7 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.
By rail or ferry By air
| Destination | How | CO₂e return | Temp | Sun/day | Rain/day | Journey |
|---|---|---|---|---|---|---|
| Tortosa, Spain | Rail | 4.5 kg | 22.3 °C | 10.3 h | 2.5 mm | 3h 42m |
| Alzira, Spain | Rail | 9.8 kg | 23.3 °C | 10.1 h | 2.4 mm | 5h 36m |
| San Javier, Spain | Rail | 14.0 kg | 24.2 °C | 10.9 h | 1.3 mm | 7h 48m |
| Jendouba, Tunisia | Air | 199 kg | 26.0 °C | 10.4 h | 1.0 mm | 4h 36m |
| Kairouan, Tunisia | Air | 236 kg | 27.0 °C | 10.7 h | 0.7 mm | 4h 42m |
| Nefta, Tunisia | Air | 245 kg | 29.6 °C | 10.2 h | 0.2 mm | 4h 48m |
| Minya, Egypt | Air | 750 kg | 31.0 °C | 11.8 h | 0.0 mm | 7h 30m |
| Assiut, Egypt | Air | 774 kg | 31.6 °C | 11.7 h | 0.0 mm | 7h 36m |
| Sohag, Egypt | Air | 795 kg | 32.3 °C | 11.7 h | 0.0 mm | 7h 42m |
| Sharm el-Sheikh, Egypt | Air | 824 kg | 33.7 °C | 11.5 h | 0.0 mm | 7h 54m |
| Edfu, Egypt | Air | 846 kg | 34.0 °C | 11.5 h | 0.0 mm | 8h |
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 Nefta (245 kg, 29.6 °C) to Minya (750 kg, 31.0 °C) buys 1.4 °C more warmth for an extra 505 kg — 361 kg of CO₂e per degree. That single step is the most expensive warmth on the whole curve.
The pick of them
EdfuEgypt846 kg CO₂e returnwarm, bright and dryThe 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 Edfu
Places to stay in Edfu, Egypt, on a live map. Prices and availability come from Stay22 and its booking partners.
Search places to stay in Edfu →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 Barcelona
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
Photo credits
- Edfu: Olaf Tausch, CC BY 3.0, via Wikimedia Commons
- Aswan: Vyacheslav Argenberg, CC BY 4.0, via Wikimedia Commons
- Sharm el-Sheikh: Tanya Dedyukhina, CC BY 3.0, 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
- Almería: Javier rodriguez jimenez, CC BY-SA 4.0, via Wikimedia Commons
- Seville: Diliff, CC BY-SA 3.0, via Wikimedia Commons
- Lido di Ostia: Mac9, CC BY-SA 2.5, via Wikimedia Commons
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Questions
Where is the warmest place to go from Barcelona in September?
Edfu, Egypt, at 34.0 °C. Reaching it emits 846 kg CO₂e return, travelling 8h each way by air (modelled).
Can I get somewhere warm from Barcelona in September without flying?
Yes. San Javier reaches 24.2 °C and is reachable by rail or ferry in 7h 48m (modelled), emitting 14.0 kg CO₂e return — though Edfu is warmer still, if you fly.
How much carbon does a return trip from Barcelona to Edfu produce?
846 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.