Oslo · May · warmth

Warmest places to go from Oslo in May

The warmest place you can reach from Oslo in May within 15 hours is Kom Ombo at 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 °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 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.

What the 15-hour limit costs: at this budget Budapest can only be reached by air — 373 kg CO₂e, in 5h 30m. Allow up to 24 hours and the train does the same journey for 43.7 kg in 22h 18m — 9× less carbon for 16h 48m more travelling.

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 18m
Hamburg, Germany	Rail	20.9 kg	14.6 °C	11.9 h	1.9 mm	11h 42m
Frankfurt (Oder), Germany	Rail	25.8 kg	15.6 °C	12.3 h	1.7 mm	14h
Budapest, Hungary	Air	373 kg	16.9 °C	11.3 h	3.5 mm	5h 30m
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
Eilat, Israel	Air	897 kg	28.0 °C	12.6 h	0.2 mm	8h 36m
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 Budapest (373 kg, 16.9 °C) buys 1.3 °C more warmth for an extra 347 kg — 267 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 18m by railmild and bright Frankfurt (Oder)Germany25.8 kg CO₂e return15.6 °C · 12.3 h sun · 14h by railwarm overall Kom OmboEgypt1,006 kg CO₂e return31.8 °C · 12.1 h sun · 9h 12m 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 Oslo 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 Kom Ombo

Places to stay in Kom Ombo, 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

May from elsewhere

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.

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, 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.