0xCarbon
Madrid · May · sunshine

Sunniest places to go from Madrid in May

The sunniest place you can reach from Madrid in May within 15 hours is Örnsköldsvik at 15.1 h, costing 739 kg CO₂e return. The lowest-carbon option is Tomelloso at 4.5 kg — 164× less carbon for 2.5 h less.

Every destination here is on the efficiency frontier: nowhere else in Europe is both sunnier in May and lower in carbon. Anything a better option beats outright has been left out.

TomellosoÖrnsköldsvik
Where they are. Solid lines are rail or ferry, dashed are flights, from Madrid. Pick one to compare.
Carbon against sunshine, May, departing Madrid. Journeys of up to 15 hours each way.5 destinations. Lowest carbon Tomelloso at 4.5 kilograms and 12.6 h; best for sunshine Örnsköldsvik at 739 kilograms and 15.1 h. Tomelloso · 4.5 kgZaragoza · 8.1 kgAllerød Municipality · 523 kgÖrnsköldsvik · 739 kg

By rail or ferry By air

Carbon against sunshine, May, departing Madrid. Journeys of up to 15 hours each way.
May from Madrid — 5 destinations on the frontier, 2 without flying.
DestinationHowCO₂e returnTempSun/dayRain/dayJourney
Tomelloso, SpainRail4.5 kg18.4 °C12.6 h1.0 mm4h 6m
Zaragoza, SpainRail8.1 kg18.8 °C13.1 h0.8 mm5h 48m
Allerød Municipality, DenmarkAir523 kg13.3 °C13.8 h0.7 mm6h 18m
Gävle, SwedenAir671 kg12.6 °C14.7 h0.7 mm7h 6m
Örnsköldsvik, SwedenAir739 kg9.0 °C15.1 h0.5 mm7h 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 Zaragoza (8.1 kg, 13.1 h) to Allerød Municipality (523 kg, 13.8 h) buys 0.7 hours more sunshine for an extra 515 kg — 736 kg of CO₂e per hour. That single step is the most expensive sunshine on the whole curve.

The pick of them

If you'd rather have heat than sunshine

May answers differently depending on what you're after. The warmest destinations from Madrid in May are a different list — hours of sunshine and degrees of warmth come apart, especially early and late in the year.

Where to stay in Örnsköldsvik

Places to stay in Örnsköldsvik, Sweden, 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 Madrid

May from elsewhere

Questions

Where is the sunniest place to go from Madrid in May?

Örnsköldsvik, Sweden, at 15.1 h. Reaching it emits 739 kg CO₂e return, travelling 7h 24m each way by air.

Can I get somewhere sunny from Madrid in May without flying?

Yes. Zaragoza reaches 13.1 h and is reachable by rail or ferry in 5h 48m, emitting 8.1 kg CO₂e return — though Örnsköldsvik is sunnier still, if you fly.

How much carbon does a return trip from Madrid to Örnsköldsvik produce?

739 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.