Paris · August · relief from the heat

Coolest places to go from Paris in August

In August, the coolest well-known place within 15 hours of Paris is Reykjavik, Iceland, 9.2 °C cooler than Paris and 8.6 h sun a day, about 6h 30m each way by air. Without flying, it is Dundee, United Kingdom, 5.6 °C cooler than Paris, about 11h 36m each way by train, for about 10× less carbon (56.9 kg CO₂e return against 561 kg).

The 10 coolest places within 15 hours of Paris

Ranked on relief from the heat in August 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, Iceland9.2 °C cooler · 8.6 h sun a day · 3.8 mm rain a day · sea 12.0 °Cair ≈ 6h 30m · 561 kg CO₂e return
Bergen, Norway6.2 °C cooler · 6.6 h sun a day · 11.7 mm rain a day · sea 15.7 °Cair ≈ 5h 12m · 326 kg CO₂e return
Östersund, Sweden6.1 °C cooler · 10.0 h sun a day · 5.1 mm rain a dayair ≈ 5h 48m · 443 kg CO₂e return
Sligo, Ireland5.6 °C cooler · 8.7 h sun a day · 6.6 mm rain a day · sea 16.0 °Cair ≈ 4h 48m · 241 kg CO₂e return
Douglas, Isle of Man5.4 °C cooler · 10.1 h sun a day · 4.1 mm rain a day · sea 15.5 °Cair ≈ 4h 30m · 190 kg CO₂e return
Haugesund, Norway5.4 °C cooler · 8.7 h sun a day · 8.6 mm rain a day · sea 15.9 °Cair ≈ 5h 6m · 299 kg CO₂e return
Oldham, United Kingdom5.3 °C cooler · 9.2 h sun a day · 3.6 mm rain a dayrail ≈ 7h 54m · 31.3 kg CO₂e return
Glasgow, United Kingdom5.3 °C cooler · 9.5 h sun a day · 5.1 mm rain a dayrail ≈ 10h 18m · 54.8 kg CO₂e return
Ålesund, Norway5.3 °C cooler · 7.5 h sun a day · 6.3 mm rain a day · sea 15.1 °Cair ≈ 5h 30m · 385 kg CO₂e return
Belfast, United Kingdom5.1 °C cooler · 10.0 h sun a day · 4.1 mm rain a dayair ≈ 4h 36m · 215 kg CO₂e return

Without flying

The coolest places the train reaches within 15 hours. Dundee is 5.6 °C cooler for 56.9 kg — about 10× less carbon than flying to Reykjavik.

Dundee, United Kingdom5.6 °C cooler · 10.5 h sun a day · 3.0 mm rain a day · sea 14.2 °Crail ≈ 11h 36m · 56.9 kg CO₂e return
Aberdeen, United Kingdom5.4 °C cooler · 11.4 h sun a day · 2.9 mm rain a day · sea 13.7 °Crail ≈ 12h 48m · 61.6 kg CO₂e return
Oldham, United Kingdom5.3 °C cooler · 9.2 h sun a day · 3.6 mm rain a dayrail ≈ 7h 54m · 31.3 kg CO₂e return
Glasgow, United Kingdom5.3 °C cooler · 9.5 h sun a day · 5.1 mm rain a dayrail ≈ 10h 18m · 54.8 kg CO₂e return
Herning, Denmark3.8 °C cooler · 9.9 h sun a day · 3.2 mm rain a dayrail ≈ 13h 6m · 27.3 kg CO₂e return
Vejle, Denmark3.5 °C cooler · 10.2 h sun a day · 3.5 mm rain a day · sea 17.3 °Crail ≈ 12h 48m · 26.7 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 Paris in August within 15 hours is Reykjavik, 9.2 °C cooler, costing 561 kg CO₂e return. The lowest-carbon option is Cherbourg at 8.9 kg — 63× less carbon, for 7.1 degrees less relief from the heat.

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

By rail or ferry By air

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

August from Paris — 5 destinations on the frontier, 4 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Cherbourg, France	Rail	8.9 kg	17.8 °C	10.2 h	2.8 mm	5h 48m
High Wycombe, United Kingdom	Rail	13.8 kg	16.7 °C	9.6 h	1.8 mm	6h
Birmingham, United Kingdom	Rail	23.2 kg	16.0 °C	9.3 h	1.5 mm	7h 12m
Buxton, United Kingdom	Rail	28.6 kg	13.9 °C	9.6 h	2.4 mm	8h 36m
Reykjavik, Iceland	Air	561 kg	10.7 °C	8.6 h	3.8 mm	6h 30m

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 (28.6 kg, 6.0 °C cooler) to Reykjavik (561 kg, 9.2 °C cooler) buys 3.2 °C more relief from the heat for an extra 533 kg — 166 kg of CO₂e per degree. That single step is the most expensive relief from the heat on the whole curve.

The pick of them

CherbourgFrance8.9 kg CO₂e return17.8 °C · 10.2 h sun · 5h 48m by railwarm overall

BuxtonUnited Kingdom28.6 kg CO₂e return13.9 °C · 9.6 h sun · 8h 36m by railmild and bright

ReykjavikIceland561 kg CO₂e return10.7 °C · 8.6 h sun · 6h 30m by airmild and bright

The same month, asked differently

August 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 Paris

August from elsewhere

Photo credits

Cherbourg: fr:Utilisateur:Steff, CC BY-SA 3.0, via Wikimedia Commons
Buxton: Andrew Hill, CC BY-SA 2.0, via Wikimedia Commons
Reykjavik: Hedwig Storch, CC BY-SA 3.0, 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
Sligo: Gerd Eichmann, CC BY-SA 4.0, via Wikimedia Commons
Douglas: Jim Linwood, CC BY 2.0, via Wikimedia Commons
Haugesund: Efarestv, CC BY-SA 3.0, via Wikimedia Commons
Oldham: Matt from Oldham, UK, CC BY 2.0, via Wikimedia Commons
Glasgow: 瑞丽江的河水, CC BY-SA 4.0, via Wikimedia Commons
Ålesund: Holger Uwe Schmitt, CC BY-SA 4.0, 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
Aberdeen: Ragazzi00, CC BY-SA 3.0, via Wikimedia Commons
Herning: Hubertus, CC BY 2.5, via Wikimedia Commons
Vejle: Hjart, CC BY-SA 4.0, via Wikimedia Commons

Questions

Where is the coolest place to go from Paris in August?

Reykjavik, Iceland, at 9.2 °C cooler. Reaching it emits 561 kg CO₂e return, travelling 6h 30m each way by air (modelled).

Can I get somewhere cool from Paris in August without flying?

Yes. Buxton reaches 6.0 °C cooler and is reachable by rail or ferry in 8h 36m (modelled), emitting 28.6 kg CO₂e return — though Reykjavik is cooler still, if you fly.

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

561 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.