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Lisbon · April · relief from the heat

Coolest places to go from Lisbon in April

In April, the coolest well-known place within 15 hours of Lisbon is Luleå, Sweden, 18.2 °C cooler than Lisbon and 9.2 h sun a day, about 8h 18m each way by air. Without flying, it is Vitoria-Gasteiz, Spain, 6.2 °C cooler than Lisbon, about 12h 18m each way by train, for about 43× less carbon (21.0 kg CO₂e return against 904 kg).

The 10 coolest places within 15 hours of Lisbon

Ranked on relief from the heat in April 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 relief from the heat each extra kilogram buys.

  1. Luleå, Sweden18.2 °C cooler · 9.2 h sun a day · 1.7 mm rain a day · sea 0.0 °Cair ≈ 8h 18m · 904 kg CO₂e return
  2. Rovaniemi, Finland18.0 °C cooler · 8.9 h sun a day · 1.6 mm rain a dayair ≈ 8h 30m · 885 kg CO₂e return
  3. Oulu, Finland17.4 °C cooler · 8.7 h sun a day · 1.8 mm rain a day · sea 0.0 °Cair ≈ 8h 24m · 924 kg CO₂e return
  4. Tromsø, Norway17.3 °C cooler · 8.8 h sun a day · 2.9 mm rain a dayair ≈ 8h 36m · 893 kg CO₂e return
  5. Östersund, Sweden17.0 °C cooler · 9.5 h sun a day · 1.4 mm rain a dayair ≈ 7h 42m · 792 kg CO₂e return
  6. Umeå, Sweden16.8 °C cooler · 9.3 h sun a day · 1.3 mm rain a day · sea 0.5 °Cair ≈ 8h · 854 kg CO₂e return
  7. Kuopio, Finland16.1 °C cooler · 8.5 h sun a day · 1.4 mm rain a dayair ≈ 8h 18m · 915 kg CO₂e return
  8. Bodø, Norway14.5 °C cooler · 8.9 h sun a day · 2.1 mm rain a day · sea 4.7 °Cair ≈ 8h 12m · 879 kg CO₂e return
  9. Reykjavik, Iceland13.6 °C cooler · 7.5 h sun a day · 4.6 mm rain a day · sea 5.2 °Cair ≈ 7h 24m · 741 kg CO₂e return
  10. Trondheim, Norway13.0 °C cooler · 9.0 h sun a day · 2.2 mm rain a dayair ≈ 7h 36m · 764 kg CO₂e return

Without flying

The coolest places the train reaches within 15 hours. Vitoria-Gasteiz is 6.2 °C cooler for 21.0 kg — about 43× less carbon than flying to Luleå.

  1. Vitoria-Gasteiz, Spain6.2 °C cooler · 9.3 h sun a day · 1.7 mm rain a dayrail ≈ 12h 18m · 21.0 kg CO₂e return
  2. Ávila, Spain6.1 °C cooler · 12.1 h sun a day · mostly dryrail ≈ 8h 18m · 12.9 kg CO₂e return
  3. Pamplona, Spain6.0 °C cooler · 9.7 h sun a day · 1.5 mm rain a dayrail ≈ 13h 12m · 23.0 kg CO₂e return
  4. Lugo, Spain5.6 °C cooler · 9.8 h sun a day · 2.4 mm rain a dayrail ≈ 8h 42m · 14.6 kg CO₂e return
  5. Pau, France4.6 °C cooler · 8.8 h sun a day · 3.1 mm rain a dayrail ≈ 14h 54m · 26.4 kg CO₂e return
  6. Biarritz, France3.9 °C cooler · 9.6 h sun a day · 4.4 mm rain a day · sea 14.3 °Crail ≈ 13h 54m · 24.4 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 coolest place you can reach from Lisbon in April within 15 hours is Luleå, 18.2 °C cooler, costing 904 kg CO₂e return. The lowest-carbon option is Viseu at 7.1 kg — 127× less carbon, for 15.3 degrees less relief from the heat.

Every destination here is on the efficiency frontier: nowhere else this site covers is both cooler in April and lower in carbon. Anything a better option beats outright has been left out.

ViseuLuleå
Where they are. Solid lines are rail or ferry, dashed are flights, from Lisbon. Pick one to compare.
Carbon against relief from the heat, April, departing Lisbon. Journeys of up to 15 hours each way.11 destinations. Lowest carbon Viseu at 7.1 kilograms and 2.9 °C cooler; best for relief from the heat Luleå at 904 kilograms and 18.2 °C cooler. Viseu · 7.1 kgLa Chaux-de-Fonds · 401 kgKristiansand · 625 kgLuleå · 904 kg

By rail or ferry By air

Carbon against relief from the heat, April, departing Lisbon. Journeys of up to 15 hours each way.

What the 15-hour limit costs: at this budget Le Puy-en-Velay can only be reached by air — 323 kg CO₂e, in 5h 12m. Allow up to 24 hours and the train does the same journey for 37.9 kg in 20h 30m — 9× less carbon for 15h 18m more travelling.

April from Lisbon — 11 destinations on the frontier, 3 without flying.
DestinationHowCO₂e returnTempSun/dayRain/dayJourney
Viseu, PortugalRail7.1 kg14.2 °C10.8 h2.3 mm5h
Guarda, PortugalRail7.6 kg11.4 °C11.2 h1.1 mm5h 12m
Soria, SpainRail19.5 kg10.5 °C11.0 h0.6 mm11h 30m
Le Puy-en-Velay, FranceAir323 kg8.9 °C9.1 h2.5 mm5h 12m
Rhondda, United KingdomAir379 kg7.7 °C7.0 h5.1 mm5h 30m
La Chaux-de-Fonds, SwitzerlandAir401 kg6.1 °C8.1 h3.7 mm5h 36m
Kristiansand, NorwayAir625 kg6.0 °C9.1 h4.0 mm6h 48m
Jönköping, SwedenAir680 kg5.1 °C8.9 h1.6 mm7h 6m
Lillehammer, NorwayAir713 kg2.6 °C8.4 h3.1 mm7h 18m
Östersund, SwedenAir792 kg0.1 °C9.5 h1.4 mm7h 42m
Luleå, SwedenAir904 kg-1.1 °C9.2 h1.7 mm8h 18m

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 La Chaux-de-Fonds (401 kg, 11.0 °C cooler) to Kristiansand (625 kg, 11.1 °C cooler) buys 0.1 °C more relief from the heat for an extra 224 kg — 2242 kg of CO₂e per degree. That single step is the most expensive relief from the heat on the whole curve.

The pick of them

The same month, asked differently

April 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 Luleå

Places to stay in Luleå, Sweden, on a live map. Prices and availability come from Stay22 and its booking partners.

Search places to stay in Luleå →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 Lisbon

April from elsewhere

Photo credits

Questions

Where is the coolest place to go from Lisbon in April?

Luleå, Sweden, at 18.2 °C cooler. Reaching it emits 904 kg CO₂e return, travelling 8h 18m each way by air (modelled).

Can I get somewhere cool from Lisbon in April without flying?

Yes. Soria reaches 6.6 °C cooler and is reachable by rail or ferry in 11h 30m (modelled), emitting 19.5 kg CO₂e return — though Luleå is cooler still, if you fly.

How much carbon does a return trip from Lisbon to Luleå produce?

904 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.