London · June · relief from the heat

Coolest places to go from London in June

In June, the coolest well-known place within 15 hours of London is Reykjavik, Iceland, 7.9 °C cooler than London and 7.9 h sun a day, about 6h each way by air. Without flying, it is Buxton, United Kingdom, 3.9 °C cooler than London, about 4h 36m each way by train, for about 26× less carbon (18.4 kg CO₂e return against 475 kg).

The 10 coolest places within 15 hours of London

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, Iceland7.9 °C cooler · 7.9 h sun a day · 4.4 mm rain a day · sea 9.1 °Cair ≈ 6h · 475 kg CO₂e return
Tromsø, Norway4.5 °C cooler · 11.8 h sun a day · 3.0 mm rain a dayair ≈ 6h 30m · 565 kg CO₂e return
Bodø, Norway4.2 °C cooler · 11.1 h sun a day · 4.8 mm rain a day · sea 10.2 °Cair ≈ 6h 6m · 484 kg CO₂e return
Buxton, United Kingdom3.9 °C cooler · 11.6 h sun a day · 2.2 mm rain a dayrail ≈ 4h 36m · 18.4 kg CO₂e return
Aberdeen, United Kingdom3.7 °C cooler · 12.5 h sun a day · 2.2 mm rain a day · sea 11.3 °Crail ≈ 8h 30m · 51.4 kg CO₂e return
Dundee, United Kingdom3.6 °C cooler · 11.4 h sun a day · 1.9 mm rain a day · sea 12.5 °Crail ≈ 7h 18m · 46.8 kg CO₂e return
Bergen, Norway3.6 °C cooler · 11.9 h sun a day · 4.4 mm rain a day · sea 12.0 °Cair ≈ 4h 54m · 263 kg CO₂e return
Östersund, Sweden3.0 °C cooler · 13.8 h sun a day · 3.0 mm rain a dayair ≈ 5h 36m · 393 kg CO₂e return
Douglas, Isle of Man2.9 °C cooler · 12.5 h sun a day · 2.2 mm rain a day · sea 13.0 °Cair ≈ 4h 6m · 104 kg CO₂e return
Sligo, Ireland2.7 °C cooler · 10.4 h sun a day · 4.0 mm rain a day · sea 14.9 °Cair ≈ 4h 24m · 160 kg CO₂e return

Without flying

The coolest places the train reaches within 15 hours. Buxton is 3.9 °C cooler for 18.4 kg — about 26× less carbon than flying to Reykjavik.

Buxton, United Kingdom3.9 °C cooler · 11.6 h sun a day · 2.2 mm rain a dayrail ≈ 4h 36m · 18.4 kg CO₂e return
Aberdeen, United Kingdom3.7 °C cooler · 12.5 h sun a day · 2.2 mm rain a day · sea 11.3 °Crail ≈ 8h 30m · 51.4 kg CO₂e return
Dundee, United Kingdom3.6 °C cooler · 11.4 h sun a day · 1.9 mm rain a day · sea 12.5 °Crail ≈ 7h 18m · 46.8 kg CO₂e return
Edinburgh, United Kingdom2.9 °C cooler · 12.3 h sun a day · 1.8 mm rain a day · sea 13.0 °Crail ≈ 5h 48m · 42.9 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 London in June within 15 hours is Reykjavik, 7.9 °C cooler, costing 475 kg CO₂e return. The lowest-carbon option is Buxton at 18.4 kg — 26× less carbon, for 4.0 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 London. Pick one to compare.

By rail or ferry By air

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

June from London — 3 destinations on the frontier, 1 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Buxton, United Kingdom	Rail	18.4 kg	12.9 °C	11.6 h	2.2 mm	4h 36m
Kristiansund, Norway	Air	345 kg	12.6 °C	11.3 h	3.6 mm	5h 18m
Reykjavik, Iceland	Air	475 kg	8.9 °C	7.9 h	4.4 mm	6h

The flights, in practice

The model measures to the town, not to a runway. For the destinations above reached by air, this is the nearest airport, how far it is, and whether a direct flight from London is listed on the airport's own destination page (researched 2026-09-15; route existence, not availability on a date). "Not checked" means no destination list was read for that airport.

Airports for the air destinations on this frontier, checked 2026-09-15.
Destination	Airport	From town	Direct from London	Onward
Kristiansund, Norway	Kristiansund Kvernberget KSU	7 km	no	Local bus or taxi to Kristiansund.
Reykjavik, Iceland	Keflavík International KEF	50 km	yes LHR, LGW, STN, LTN	Airport coach or public bus to Reykjavík; KEF is used instead of the domestic city airport.

Sources for this table

Kristiansund: www.avinor.no
Reykjavik: www.kefairport.com

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 Buxton (18.4 kg, 3.9 °C cooler) to Kristiansund (345 kg, 4.2 °C cooler) buys 0.3 °C more relief from the heat for an extra 327 kg — 1088 kg of CO₂e per degree. That single step is the most expensive relief from the heat on the whole curve.

The pick of them

BuxtonUnited Kingdom18.4 kg CO₂e return12.9 °C · 11.6 h sun · 4h 36m by railmild and bright

ReykjavikIceland475 kg CO₂e return8.9 °C · 7.9 h sun · 6h 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 London

June from elsewhere

Photo credits

Buxton: Andrew Hill, CC BY-SA 2.0, 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
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
Edinburgh: 瑞丽江的河水, CC BY-SA 4.0, via Wikimedia Commons

Questions

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

Reykjavik, Iceland, at 7.9 °C cooler. Reaching it emits 475 kg CO₂e return, travelling 6h each way by air (modelled).

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

Yes. Buxton reaches 3.9 °C cooler and is reachable by rail or ferry in 4h 36m (modelled), emitting 18.4 kg CO₂e return — though Reykjavik is cooler still, if you fly.

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

475 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.