Lisbon · June · relief from the heat

Coolest places to go from Lisbon in June

In June, the coolest well-known place within 15 hours of Lisbon is Reykjavik, Iceland, 11.8 °C cooler than Lisbon and 7.9 h sun a day, about 7h 24m each way by air. Without flying, it is Lugo, Spain, 4.4 °C cooler than Lisbon, about 8h 42m each way by train, for about 51× less carbon (14.6 kg CO₂e return against 741 kg).

The 10 coolest places within 15 hours of Lisbon

Ranked on relief from the heat in June 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.

Reykjavik, Iceland11.8 °C cooler · 7.9 h sun a day · 4.4 mm rain a day · sea 9.1 °Cair ≈ 7h 24m · 741 kg CO₂e return
Tromsø, Norway8.4 °C cooler · 11.8 h sun a day · 3.0 mm rain a dayair ≈ 8h 36m · 893 kg CO₂e return
Bodø, Norway8.1 °C cooler · 11.1 h sun a day · 4.8 mm rain a day · sea 10.2 °Cair ≈ 8h 12m · 879 kg CO₂e return
Buxton, United Kingdom7.8 °C cooler · 11.6 h sun a day · 2.2 mm rain a dayair ≈ 5h 48m · 430 kg CO₂e return
Aberdeen, United Kingdom7.6 °C cooler · 12.5 h sun a day · 2.2 mm rain a day · sea 11.3 °Cair ≈ 6h 18m · 531 kg CO₂e return
Dundee, United Kingdom7.5 °C cooler · 11.4 h sun a day · 1.9 mm rain a day · sea 12.5 °Cair ≈ 6h 12m · 509 kg CO₂e return
Bergen, Norway7.5 °C cooler · 11.9 h sun a day · 4.4 mm rain a day · sea 12.0 °Cair ≈ 7h · 657 kg CO₂e return
Östersund, Sweden6.9 °C cooler · 13.8 h sun a day · 3.0 mm rain a dayair ≈ 7h 42m · 792 kg CO₂e return
Douglas, Isle of Man6.8 °C cooler · 12.5 h sun a day · 2.2 mm rain a day · sea 13.0 °Cair ≈ 5h 48m · 440 kg CO₂e return
Sligo, Ireland6.6 °C cooler · 10.4 h sun a day · 4.0 mm rain a day · sea 14.9 °Cair ≈ 5h 48m · 435 kg CO₂e return

Without flying

The coolest places the train reaches within 15 hours. Lugo is 4.4 °C cooler for 14.6 kg — about 51× less carbon than flying to Reykjavik.

Lugo, Spain4.4 °C cooler · 10.6 h sun a day · 3.3 mm rain a dayrail ≈ 8h 42m · 14.6 kg CO₂e return
Oviedo, Spain3.9 °C cooler · 8.7 h sun a day · 4.9 mm rain a dayrail ≈ 10h 18m · 17.3 kg CO₂e return
Vitoria-Gasteiz, Spain3.5 °C cooler · 10.1 h sun a day · 2.4 mm rain a dayrail ≈ 12h 18m · 21.0 kg CO₂e return
Ávila, Spain3.2 °C cooler · 12.6 h sun a day · 2.0 mm rain a dayrail ≈ 8h 18m · 12.9 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 June within 15 hours is Reykjavik, 11.8 °C cooler, costing 741 kg CO₂e return. The lowest-carbon option is Sao Joao da Madeira at 7.3 kg — 102× less carbon, for 9.8 degrees less relief from the heat.

Every destination here is on the efficiency frontier: nowhere else this site covers is both cooler in June 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 Lisbon. Pick one to compare.

By rail or ferry By air

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

June from Lisbon — 8 destinations on the frontier, 2 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Sao Joao da Madeira, Portugal	Rail	7.3 kg	18.7 °C	12.3 h	3.7 mm	5h 6m
Guarda, Portugal	Rail	7.6 kg	16.8 °C	13.1 h	3.2 mm	5h 12m
Falmouth, United Kingdom	Air	330 kg	15.5 °C	12.0 h	1.9 mm	5h 12m
Cork, Ireland	Air	369 kg	14.8 °C	10.5 h	2.2 mm	5h 30m
Rhondda, United Kingdom	Air	379 kg	14.3 °C	11.6 h	2.1 mm	5h 30m
Ebbw Vale, United Kingdom	Air	383 kg	13.5 °C	11.3 h	1.8 mm	5h 30m
Kristiansund, Norway	Air	739 kg	12.6 °C	11.3 h	3.6 mm	7h 24m
Reykjavik, Iceland	Air	741 kg	8.9 °C	7.9 h	4.4 mm	7h 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 Ebbw Vale (383 kg, 7.2 °C cooler) to Kristiansund (739 kg, 8.1 °C cooler) buys 0.9 °C more relief from the heat for an extra 356 kg — 395 kg of CO₂e per degree. That single step is the most expensive relief from the heat on the whole curve.

The pick of them

Sao Joao da MadeiraPortugal7.3 kg CO₂e return18.7 °C · 12.3 h sun · 5h 6m by railwarm but wet

GuardaPortugal7.6 kg CO₂e return16.8 °C · 13.1 h sun · 5h 12m by railwarm but wet

ReykjavikIceland741 kg CO₂e return8.9 °C · 7.9 h sun · 7h 24m by aircold but bright

The same month, asked differently

June 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 Reykjavik

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

Search places to stay in Reykjavik →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

June from elsewhere

Photo credits

Sao Joao da Madeira: Vitor Oliveira from Torres Vedras, PORTUGAL, CC BY-SA 2.0, via Wikimedia Commons
Guarda: Alexa Pinto, CC BY-SA 3.0, via Wikimedia Commons
Reykjavik: Hedwig Storch, CC BY-SA 3.0, via Wikimedia Commons
Tromsø: Diego Delso, CC BY-SA 4.0, via Wikimedia Commons
Bodø: Røed 20:41, 24 July 2006 (UTC), CC BY-SA 2.5, via Wikimedia Commons
Buxton: Andrew Hill, CC BY-SA 2.0, via Wikimedia Commons
Aberdeen: Ragazzi00, CC BY-SA 3.0, via Wikimedia Commons
Dundee: File:442 dundee header.png (Tay Bridge and RSS Discovery images):- Original: PlutosAcademy File:V&A Dundee Near Completi, CC BY-SA 4.0, via Wikimedia Commons
Bergen: W. Bulach, CC BY-SA 4.0, via Wikimedia Commons
Östersund: Lars Falkdalen Lindahl (User:Njaelkies Lea), CC BY-SA 3.0, via Wikimedia Commons
Douglas: Jim Linwood, CC BY 2.0, via Wikimedia Commons
Sligo: Gerd Eichmann, CC BY-SA 4.0, via Wikimedia Commons
Lugo: Fausto Alava-Moreno, CC BY-SA 2.0, via Wikimedia Commons
Oviedo: javier.losa, CC BY-SA 2.0, via Wikimedia Commons
Vitoria-Gasteiz: User:Vmenkov, CC BY-SA 3.0, via Wikimedia Commons
Ávila: Anual, CC BY 3.0, via Wikimedia Commons

Questions

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

Reykjavik, Iceland, at 11.8 °C cooler. Reaching it emits 741 kg CO₂e return, travelling 7h 24m each way by air (modelled).

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

Yes. Guarda reaches 3.9 °C cooler and is reachable by rail or ferry in 5h 12m (modelled), emitting 7.6 kg CO₂e return — though Reykjavik is cooler still, if you fly.

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

741 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.