Prague · June · relief from the heat

Coolest places to go from Prague in June

In June, the coolest well-known place within 15 hours of Prague is Reykjavik, Iceland, 10.5 °C cooler than Prague and 7.9 h sun a day, about 7h each way by air. Without flying, it is Herning, Denmark, 4.2 °C cooler than Prague, about 13h each way by train, for about 29× less carbon (22.5 kg CO₂e return against 663 kg).

The 10 coolest places within 15 hours of Prague

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, Iceland10.5 °C cooler · 7.9 h sun a day · 4.4 mm rain a day · sea 9.1 °Cair ≈ 7h · 663 kg CO₂e return
Tromsø, Norway7.1 °C cooler · 11.8 h sun a day · 3.0 mm rain a dayair ≈ 6h 24m · 550 kg CO₂e return
Bodø, Norway6.8 °C cooler · 11.1 h sun a day · 4.8 mm rain a day · sea 10.2 °Cair ≈ 6h · 481 kg CO₂e return
Buxton, United Kingdom6.5 °C cooler · 11.6 h sun a day · 2.2 mm rain a dayair ≈ 5h 6m · 296 kg CO₂e return
Aberdeen, United Kingdom6.3 °C cooler · 12.5 h sun a day · 2.2 mm rain a day · sea 11.3 °Cair ≈ 5h 18m · 336 kg CO₂e return
Dundee, United Kingdom6.2 °C cooler · 11.4 h sun a day · 1.9 mm rain a day · sea 12.5 °Cair ≈ 5h 18m · 340 kg CO₂e return
Bergen, Norway6.2 °C cooler · 11.9 h sun a day · 4.4 mm rain a day · sea 12.0 °Cair ≈ 5h 12m · 322 kg CO₂e return
Östersund, Sweden5.6 °C cooler · 13.8 h sun a day · 3.0 mm rain a dayair ≈ 5h 24m · 366 kg CO₂e return
Douglas, Isle of Man5.5 °C cooler · 12.5 h sun a day · 2.2 mm rain a day · sea 13.0 °Cair ≈ 5h 18m · 343 kg CO₂e return
Sligo, Ireland5.3 °C cooler · 10.4 h sun a day · 4.0 mm rain a day · sea 14.9 °Cair ≈ 5h 42m · 408 kg CO₂e return

Without flying

The coolest places the train reaches within 15 hours. Herning is 4.2 °C cooler for 22.5 kg — about 29× less carbon than flying to Reykjavik.

Herning, Denmark4.2 °C cooler · 13.6 h sun a day · 2.6 mm rain a dayrail ≈ 13h · 22.5 kg CO₂e return
Zakopane, Poland4.2 °C cooler · 11.1 h sun a day · 4.6 mm rain a dayrail ≈ 7h 54m · 12.0 kg CO₂e return
Vejle, Denmark4.1 °C cooler · 13.7 h sun a day · 2.2 mm rain a day · sea 15.4 °Crail ≈ 12h 12m · 20.8 kg CO₂e return
Esbjerg, Denmark4.1 °C cooler · 13.9 h sun a day · 2.8 mm rain a day · sea 15.5 °Crail ≈ 12h 24m · 21.2 kg CO₂e return
Aarhus, Denmark3.8 °C cooler · 14.0 h sun a day · 2.3 mm rain a day · sea 15.6 °Crail ≈ 12h 36m · 21.6 kg CO₂e return
Gothenburg, Sweden3.8 °C cooler · 14.1 h sun a day · 3.2 mm rain a day · sea 16.2 °Crail ≈ 14h 30m · 25.4 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 Prague in June within 15 hours is Reykjavik, 10.5 °C cooler, costing 663 kg CO₂e return. The lowest-carbon option is Wałbrzych at 4.5 kg — 147× less carbon, for 8.2 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 Prague. Pick one to compare.

By rail or ferry By air

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

What the 15-hour limit costs: at this budget Stavanger can only be reached by air — 285 kg CO₂e, in 5h. Allow up to 24 hours and the train does the same journey for 33.5 kg in 18h 24m — 9× less carbon for 13h 24m more travelling.

June from Prague — 7 destinations on the frontier, 3 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Wałbrzych, Poland	Rail	4.5 kg	17.1 °C	12.8 h	2.2 mm	4h 12m
Hof, Germany	Rail	5.3 kg	16.2 °C	12.6 h	3.3 mm	4h 36m
Zakopane, Poland	Rail	12.0 kg	15.2 °C	11.1 h	4.6 mm	7h 54m
Stavanger, Norway	Air	285 kg	13.7 °C	13.7 h	4.1 mm	5h
Buxton, United Kingdom	Air	296 kg	12.9 °C	11.6 h	2.2 mm	5h 6m
Harstad, Norway	Air	524 kg	11.6 °C	11.9 h	2.1 mm	6h 18m
Reykjavik, Iceland	Air	663 kg	8.9 °C	7.9 h	4.4 mm	7h

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 Zakopane (12.0 kg, 4.2 °C cooler) to Stavanger (285 kg, 5.7 °C cooler) buys 1.5 °C more relief from the heat for an extra 273 kg — 182 kg of CO₂e per degree. That single step is the most expensive relief from the heat on the whole curve.

The pick of them

WałbrzychPoland4.5 kg CO₂e return17.1 °C · 12.8 h sun · 4h 12m by railwarm overall

ZakopanePoland12.0 kg CO₂e return15.2 °C · 11.1 h sun · 7h 54m by railwarm but wet

ReykjavikIceland663 kg CO₂e return8.9 °C · 7.9 h sun · 7h 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 Prague

June from elsewhere

Photo credits

Wałbrzych: Jar.ciurus, CC BY-SA 3.0 pl, via Wikimedia Commons
Zakopane: Maksym Kozlenko, CC BY-SA 4.0, 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
Herning: Hubertus, CC BY 2.5, via Wikimedia Commons
Vejle: Hjart, CC BY-SA 4.0, via Wikimedia Commons
Esbjerg: No machine-readable author provided. Cnyborg assumed (based on copyright claims)., CC BY-SA 3.0, via Wikimedia Commons
Gothenburg: Bengt Nyman from Vaxholm, Sweden, CC BY 2.0, via Wikimedia Commons

Questions

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

Reykjavik, Iceland, at 10.5 °C cooler. Reaching it emits 663 kg CO₂e return, travelling 7h each way by air (modelled).

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

Yes. Zakopane reaches 4.2 °C cooler and is reachable by rail or ferry in 7h 54m (modelled), emitting 12.0 kg CO₂e return — though Reykjavik is cooler still, if you fly.

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

663 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.