Oslo · May · warmth

Warmest places to go from Oslo in May

In May, the warmest well-known place within 15 hours of Oslo is Aswan, Egypt, averaging 31.5 °C across day and night and 12.0 h sun a day, about 9h 18m each way by air. Without flying, it is Frankfurt (Oder), Germany, averaging 15.6 °C across day and night, about 14h 36m each way by train, for about 39× less carbon (25.8 kg CO₂e return against 1,015 kg).

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

The 10 warmest places within 15 hours of Oslo

Ranked on warmth in May 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, Egypt31.5 °C · 12.0 h sun a day · mostly dryair ≈ 9h 18m · 1,015 kg CO₂e return
Luxor, Egypt31.2 °C · 12.0 h sun a day · mostly dryair ≈ 9h · 974 kg CO₂e return
Sharm el-Sheikh, Egypt30.0 °C · 12.6 h sun a day · mostly dry · sea 24.5 °Cair ≈ 8h 48m · 932 kg CO₂e return
Aqaba, Jordan28.2 °C · 12.6 h sun a day · mostly dry · sea 23.5 °Cair ≈ 8h 36m · 898 kg CO₂e return
Ouarzazate, Morocco23.0 °C · 12.4 h sun a day · mostly dryair ≈ 8h 6m · 875 kg CO₂e return
Tataouine, Tunisia22.9 °C · 11.4 h sun a day · mostly dryair ≈ 7h 30m · 755 kg CO₂e return
Marrakesh, Morocco22.5 °C · 12.0 h sun a day · mostly dryair ≈ 8h 6m · 864 kg CO₂e return
Adana, Turkey22.0 °C · 11.6 h sun a day · 3.6 mm rain a dayair ≈ 7h 36m · 777 kg CO₂e return
Nicosia, Cyprus21.9 °C · 12.5 h sun a day · mostly dry · sea 21.0 °Cair ≈ 7h 48m · 804 kg CO₂e return
Limassol, Cyprus21.9 °C · 12.8 h sun a day · mostly dry · sea 20.3 °Cair ≈ 7h 48m · 814 kg CO₂e return

Without flying

The warmest places the train reaches within 15 hours. Frankfurt (Oder) is 15.6 °C for 25.8 kg — about 39× less carbon than flying to Aswan.

Frankfurt (Oder), Germany15.6 °C · 12.3 h sun a day · 1.7 mm rain a dayrail ≈ 14h 36m · 25.8 kg CO₂e return
Dessau, Germany15.4 °C · 11.4 h sun a day · 1.4 mm rain a dayrail ≈ 15h · 26.6 kg CO₂e return
Berlin, Germany15.4 °C · 12.5 h sun a day · 1.8 mm rain a dayrail ≈ 14h 6m · 24.7 kg CO₂e return
Celle, Germany15.1 °C · 11.5 h sun a day · 1.9 mm rain a dayrail ≈ 13h 42m · 24.0 kg CO₂e return
Bydgoszcz, Poland15.0 °C · 12.6 h sun a day · 1.2 mm rain a dayrail ≈ 14h 36m · 25.8 kg CO₂e return
Szczecin, Poland14.9 °C · 12.4 h sun a day · 1.4 mm rain a dayrail ≈ 12h 54m · 22.3 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 Oslo in May within 15 hours is Kom Ombo, 31.8 °C, costing 1,006 kg CO₂e return. The lowest-carbon option is Karlstad at 4.9 kg — 205× less carbon, for 18.2 degrees less warmth.

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

By rail or ferry By air

Carbon against warmth, May, departing Oslo. Journeys of up to 15 hours each way.

May from Oslo — 19 destinations on the frontier, 3 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Karlstad, Sweden	Rail	4.9 kg	13.6 °C	14.3 h	1.1 mm	4h 24m
Hamburg, Germany	Rail	20.9 kg	14.6 °C	11.9 h	1.9 mm	12h 12m
Frankfurt (Oder), Germany	Rail	25.8 kg	15.6 °C	12.3 h	1.7 mm	14h 36m
Trnava, Slovakia	Air	341 kg	16.6 °C	10.7 h	3.2 mm	5h 18m
Trieste, Italy	Air	402 kg	17.6 °C	10.6 h	7.5 mm	5h 36m
Split, Croatia	Air	469 kg	18.9 °C	11.3 h	5.4 mm	6h
Berat, Albania	Air	561 kg	19.6 °C	11.2 h	4.1 mm	6h 30m
Jendouba, Tunisia	Air	656 kg	20.3 °C	10.7 h	2.3 mm	7h
Córdoba, Spain	Air	675 kg	21.3 °C	12.2 h	1.0 mm	7h 6m
Gafsa, Tunisia	Air	714 kg	22.9 °C	11.7 h	1.2 mm	7h 18m
Metlaoui, Tunisia	Air	717 kg	23.8 °C	11.8 h	0.8 mm	7h 18m
Tozeur, Tunisia	Air	729 kg	25.8 °C	11.6 h	0.6 mm	7h 24m
Al Fayyum, Egypt	Air	871 kg	27.1 °C	12.0 h	0.0 mm	8h 30m
Bani Suwayf, Egypt	Air	879 kg	27.6 °C	11.9 h	0.0 mm	8h 30m
Aqaba, Jordan	Air	898 kg	28.2 °C	12.6 h	0.2 mm	8h 36m
Assiut, Egypt	Air	927 kg	29.0 °C	11.9 h	0.0 mm	8h 48m
Sharm el-Sheikh, Egypt	Air	932 kg	30.0 °C	12.6 h	0.1 mm	8h 48m
Luxor, Egypt	Air	974 kg	31.2 °C	12.0 h	0.0 mm	9h
Kom Ombo, Egypt	Air	1,006 kg	31.8 °C	12.1 h	0.0 mm	9h 12m

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 Frankfurt (Oder) (25.8 kg, 15.6 °C) to Trnava (341 kg, 16.6 °C) buys 1.0 °C more warmth for an extra 315 kg — 315 kg of CO₂e per degree. That single step is the most expensive warmth on the whole curve.

The pick of them

KarlstadSweden4.9 kg CO₂e return13.6 °C · 14.3 h sun · 4h 24m by railmild and bright Frankfurt (Oder)Germany25.8 kg CO₂e return15.6 °C · 12.3 h sun · 14h 36m by railwarm overall

Kom OmboEgypt1,006 kg CO₂e return31.8 °C · 12.1 h sun · 9h 12m by airwarm, bright and dry

The same month, asked differently

May 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 Kom Ombo

Places to stay in Kom Ombo, Egypt, on a live map. Prices and availability come from Stay22 and its booking partners.

Search places to stay in Kom Ombo →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 Oslo

May from elsewhere

Photo credits

Karlstad: Håkan Svensson (Xauxa) (image 1), Janee (image 2 & 5), I99pema (image 3 & 4), CC BY-SA 3.0, via Wikimedia Commons
Kom Ombo: Jerzy Strzelecki, CC BY-SA 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
Sharm el-Sheikh: Tanya Dedyukhina, CC BY 3.0, via Wikimedia Commons
Aqaba: Sana Janakat, CC BY-SA 4.0, via Wikimedia Commons
Ouarzazate: Bjørn Christian Tørrissen, CC BY-SA 3.0, via Wikimedia Commons
Tataouine: Averater, CC BY-SA 3.0, via Wikimedia Commons
Marrakesh: Donar Reiskoffer, CC BY 3.0, via Wikimedia Commons
Adana: Anatolianpride, Public domain, via Wikimedia Commons
Limassol: Xaris333, CC BY-SA 3.0, via Wikimedia Commons
Dessau: Sven Scharr, CC BY 3.0, 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
Szczecin: Andrzej Otrębski, CC BY-SA 3.0, via Wikimedia Commons

Questions

Where is the warmest place to go from Oslo in May?

Kom Ombo, Egypt, at 31.8 °C. Reaching it emits 1,006 kg CO₂e return, travelling 9h 12m each way by air (modelled).

Can I get somewhere warm from Oslo in May without flying?

Yes. Frankfurt (Oder) reaches 15.6 °C and is reachable by rail or ferry in 14h 36m (modelled), emitting 25.8 kg CO₂e return — though Kom Ombo is warmer still, if you fly.

How much carbon does a return trip from Oslo to Kom Ombo produce?

1,006 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.