Copenhagen · May · warmth

Warmest places to go from Copenhagen in May

The warmest place you can reach from Copenhagen in May within 15 hours is Luxor at 31.2 °C, costing 868 kg CO₂e return. The lowest-carbon option is Stralsund at 4.6 kg — 189× less carbon for 17.5 °C less.

Every destination here is on the efficiency frontier: nowhere else in Europe 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 Copenhagen. Pick one to compare.

By rail or ferry By air

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

What the 15-hour limit costs: at this budget Split can only be reached by air — 347 kg CO₂e, in 5h 18m. Allow up to 24 hours and the train does the same journey for 40.7 kg in 20h 54m — 9× less carbon for 15h 36m more travelling.

May from Copenhagen — 16 destinations on the frontier, 4 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Stralsund, Germany	Rail	4.6 kg	13.7 °C	13.0 h	1.4 mm	4h 6m
Świnoujście, Poland	Rail	6.6 kg	14.6 °C	13.2 h	0.9 mm	5h 6m
Brandenburg an der Havel, Germany	Rail	10.7 kg	15.5 °C	12.1 h	1.5 mm	7h
Trnava, Slovakia	Rail	26.0 kg	16.6 °C	10.7 h	3.2 mm	14h 6m
Trieste, Italy	Air	281 kg	17.6 °C	10.6 h	7.5 mm	5h
Split, Croatia	Air	347 kg	18.9 °C	11.3 h	5.4 mm	5h 18m
Berat, Albania	Air	440 kg	19.6 °C	11.2 h	4.1 mm	5h 48m
Sousse, Tunisia	Air	556 kg	20.4 °C	11.1 h	1.8 mm	6h 24m
Kairouan, Tunisia	Air	561 kg	21.8 °C	11.0 h	1.7 mm	6h 30m
Gafsa, Tunisia	Air	599 kg	22.9 °C	11.7 h	1.2 mm	6h 42m
Metlaoui, Tunisia	Air	603 kg	23.8 °C	11.8 h	0.8 mm	6h 42m
Tozeur, Tunisia	Air	615 kg	25.8 °C	11.6 h	0.6 mm	6h 48m
Moulay Ali Cherif, Morocco	Air	758 kg	26.6 °C	12.1 h	0.1 mm	7h 30m
Aqaba, Jordan	Air	857 kg	28.2 °C	12.6 h	0.2 mm	8h
Mallawi, Egypt	Air	864 kg	28.6 °C	11.8 h	0.1 mm	8h 6m
Luxor, Egypt	Air	868 kg	31.2 °C	12.0 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 Trnava (26.0 kg, 16.6 °C) to Trieste (281 kg, 17.6 °C) buys 1.0 °C more warmth for an extra 255 kg — 255 kg of CO₂e per degree. That single step is the most expensive warmth on the whole curve.

The pick of them

StralsundGermany4.6 kg CO₂e return13.7 °C · 13.0 h sun · 4h 6m by railmild and bright TrnavaSlovakia26.0 kg CO₂e return16.6 °C · 10.7 h sun · 14h 6m by railwarm but wet LuxorEgypt868 kg CO₂e return31.2 °C · 12.0 h sun · 8h 24m by airwarm, bright and dry

If you'd rather have sunshine than heat

May answers differently depending on what you're after. The sunniest destinations from Copenhagen in May are a different list — the brightest places are not always the hottest, and in winter the difference is large.

Where to stay in Luxor

Places to stay in Luxor, 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 Copenhagen

May from elsewhere

Questions

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

Luxor, Egypt, at 31.2 °C. Reaching it emits 868 kg CO₂e return, travelling 8h 24m each way by air.

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

Yes. Trnava reaches 16.6 °C and is reachable by rail or ferry in 14h 6m, emitting 26.0 kg CO₂e return — though Luxor is warmer still, if you fly.

How much carbon does a return trip from Copenhagen to Luxor 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.