Warmest places to go from Oslo in September
The warmest place you can reach from Oslo in September within 15 hours is Sharm el-Sheikh at 33.7 °C, costing 932 kg CO₂e return. The lowest-carbon option is Karlstad at 4.9 kg — 190× less carbon for 19.2 °C less.
Every destination here is on the efficiency frontier: nowhere else in Europe 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
What the 15-hour limit costs: at this budget Trento can only be reached by air — 387 kg CO₂e, in 5h 36m. Allow up to 24 hours and the train does the same journey for 45.4 kg in 23h 6m — 9× less carbon for 17h 30m more travelling.
| Destination | How | CO₂e return | Temp | Sun/day | Rain/day | Journey |
|---|---|---|---|---|---|---|
| Karlstad, Sweden | Rail | 4.9 kg | 14.5 °C | 8.2 h | 2.8 mm | 4h 18m |
| Hjørring, Denmark | Rail | 8.1 kg | 15.3 °C | 8.7 h | 2.7 mm | 5h 48m |
| Copenhagen, Denmark | Rail | 14.3 kg | 16.5 °C | 10.0 h | 1.5 mm | 8h 36m |
| Świnoujście, Poland | Rail | 20.7 kg | 18.1 °C | 9.8 h | 1.0 mm | 11h 36m |
| Trnava, Slovakia | Air | 341 kg | 19.0 °C | 9.4 h | 3.6 mm | 5h 18m |
| Trento, Italy | Air | 387 kg | 19.8 °C | 10.0 h | 3.5 mm | 5h 36m |
| Trieste, Italy | Air | 402 kg | 20.8 °C | 9.8 h | 6.4 mm | 5h 36m |
| Pula, Croatia | Air | 424 kg | 21.8 °C | 9.8 h | 4.8 mm | 5h 42m |
| Foggia, Italy | Air | 523 kg | 23.2 °C | 10.3 h | 2.0 mm | 6h 18m |
| Taranto, Italy | Air | 556 kg | 24.3 °C | 11.0 h | 0.9 mm | 6h 24m |
| Palermo, Italy | Air | 611 kg | 24.5 °C | 11.0 h | 2.1 mm | 6h 42m |
| Tunis, Tunisia | Air | 646 kg | 25.7 °C | 10.9 h | 0.9 mm | 6h 54m |
| Kairouan, Tunisia | Air | 678 kg | 27.0 °C | 10.7 h | 0.7 mm | 7h 6m |
| Metlaoui, Tunisia | Air | 717 kg | 27.7 °C | 10.5 h | 0.3 mm | 7h 18m |
| Tozeur, Tunisia | Air | 729 kg | 29.4 °C | 10.3 h | 0.3 mm | 7h 24m |
| Al Fayyum, Egypt | Air | 871 kg | 30.3 °C | 11.7 h | 0.0 mm | 8h 30m |
| Eilat, Israel | Air | 897 kg | 31.3 °C | 11.4 h | 0.0 mm | 8h 36m |
| Sharm el-Sheikh, Egypt | Air | 932 kg | 33.7 °C | 11.5 h | 0.0 mm | 8h 48m |
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 Świnoujście (20.7 kg, 18.1 °C) to Trnava (341 kg, 19.0 °C) buys 0.9 °C more warmth for an extra 320 kg — 356 kg of CO₂e per degree. That single step is the most expensive warmth on the whole curve.
The pick of them
If you'd rather have sunshine than heat
September answers differently depending on what you're after. The sunniest destinations from Oslo in September are a different list — the brightest places are not always the hottest, and in winter the difference is large.
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.
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 Oslo
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
Questions
Where is the warmest place to go from Oslo in September?
Sharm el-Sheikh, Egypt, at 33.7 °C. Reaching it emits 932 kg CO₂e return, travelling 8h 48m each way by air.
Can I get somewhere warm from Oslo in September without flying?
Yes. Świnoujście reaches 18.1 °C and is reachable by rail or ferry in 11h 36m, emitting 20.7 kg CO₂e return — though Sharm el-Sheikh is warmer still, if you fly.
How much carbon does a return trip from Oslo to Sharm el-Sheikh produce?
932 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.