Oslo · April · warmth

Warmest places to go from Oslo in April

The warmest place you can reach from Oslo in April within 15 hours is Kom Ombo at 28.3 °C, costing 1,006 kg CO₂e return. The lowest-carbon option is Karlstad at 4.9 kg — 205× less carbon for 23.3 °C less.

Every destination here is on the efficiency frontier: nowhere else in Europe is both warmer in April 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, April, departing Oslo. Journeys of up to 15 hours each way.

What the 15-hour limit costs: at this budget Győr can only be reached by air — 360 kg CO₂e, in 5h 24m. Allow up to 24 hours and the train does the same journey for 42.2 kg in 21h 36m — 9× less carbon for 16h 12m more travelling.

April from Oslo — 24 destinations on the frontier, 6 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Karlstad, Sweden	Rail	4.9 kg	5.0 °C	9.3 h	2.1 mm	4h 18m
Arendal, Norway	Rail	5.8 kg	5.8 °C	9.5 h	3.3 mm	4h 42m
Hjørring, Denmark	Rail	8.1 kg	6.9 °C	10.1 h	2.6 mm	5h 48m
Kiel, Germany	Rail	18.4 kg	7.9 °C	9.3 h	2.6 mm	10h 30m
Hamburg, Germany	Rail	20.9 kg	8.8 °C	8.9 h	2.4 mm	11h 42m
Bremen, Germany	Rail	22.7 kg	9.3 °C	8.9 h	2.6 mm	12h 30m
Ludwigshafen am Rhein, Germany	Air	294 kg	10.2 °C	9.1 h	3.0 mm	5h 6m
Győr, Hungary	Air	360 kg	11.3 °C	9.5 h	2.1 mm	5h 24m
Trieste, Italy	Air	402 kg	12.7 °C	9.5 h	3.3 mm	5h 36m
Milan, Italy	Air	405 kg	13.1 °C	10.3 h	2.9 mm	5h 36m
Nice, France	Air	457 kg	14.4 °C	11.3 h	1.5 mm	5h 54m
Perpignan, France	Air	500 kg	15.2 °C	10.4 h	1.3 mm	6h 6m
Trani, Italy	Air	530 kg	15.5 °C	10.5 h	2.1 mm	6h 18m
Valencia, Spain	Air	604 kg	16.6 °C	11.5 h	0.1 mm	6h 42m
Alzira, Spain	Air	613 kg	18.2 °C	11.5 h	0.1 mm	6h 48m
Almería, Spain	Air	687 kg	19.3 °C	11.6 h	0.2 mm	7h 6m
Seville, Spain	Air	697 kg	19.8 °C	11.8 h	0.2 mm	7h 12m
Tozeur, Tunisia	Air	729 kg	21.3 °C	10.8 h	0.6 mm	7h 24m
Arfoud, Morocco	Air	844 kg	22.8 °C	11.7 h	0.1 mm	8h
Al Fayyum, Egypt	Air	871 kg	24.0 °C	11.5 h	0.0 mm	8h 30m
Eilat, Israel	Air	897 kg	25.1 °C	11.7 h	0.2 mm	8h 36m
Assiut, Egypt	Air	927 kg	25.6 °C	11.6 h	0.0 mm	8h 48m
Luxor, Egypt	Air	974 kg	27.4 °C	11.8 h	0.0 mm	9h
Kom Ombo, Egypt	Air	1,006 kg	28.3 °C	11.8 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 Bremen (22.7 kg, 9.3 °C) to Ludwigshafen am Rhein (294 kg, 10.2 °C) buys 0.9 °C more warmth for an extra 271 kg — 302 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 return5.0 °C · 9.3 h sun · 4h 18m by railcold but bright BremenGermany22.7 kg CO₂e return9.3 °C · 8.9 h sun · 12h 30m by railcold but bright Kom OmboEgypt1,006 kg CO₂e return28.3 °C · 11.8 h sun · 9h 12m by airwarm, bright and dry

If you'd rather have sunshine than heat

April answers differently depending on what you're after. The sunniest destinations from Oslo in April 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

April from elsewhere

Questions

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

Kom Ombo, Egypt, at 28.3 °C. Reaching it emits 1,006 kg CO₂e return, travelling 9h 12m each way by air.

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

Yes. Bremen reaches 9.3 °C and is reachable by rail or ferry in 12h 30m, emitting 22.7 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.