0xCarbon
Sheffield · August · relief from the heat

Coolest places to go from Sheffield in August

In August, the coolest well-known place within 15 hours of Sheffield is Reykjavik, Iceland, 5.6 °C cooler than Sheffield and 8.6 h sun a day, about 5h 42m each way by air. Without flying, it is Stirling, United Kingdom, 2.2 °C cooler than Sheffield, about 6h 30m each way by train, for about 15× less carbon (27.6 kg CO₂e return against 419 kg).

The 7 coolest places within 15 hours of Sheffield

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.

  1. Reykjavik, Iceland5.6 °C cooler · 8.6 h sun a day · 3.8 mm rain a day · sea 12.0 °Cair ≈ 5h 42m · 419 kg CO₂e return
  2. Bergen, Norway2.6 °C cooler · 6.6 h sun a day · 11.7 mm rain a day · sea 15.7 °Cair ≈ 4h 42m · 222 kg CO₂e return
  3. Östersund, Sweden2.5 °C cooler · 10.0 h sun a day · 5.1 mm rain a dayair ≈ 5h 24m · 360 kg CO₂e return
  4. Ballymena, United Kingdom2.3 °C cooler · 9.0 h sun a day · 4.5 mm rain a dayair ≈ 4h · 162 kg CO₂e return
  5. Stirling, United Kingdom2.2 °C cooler · 9.4 h sun a day · 4.1 mm rain a dayrail ≈ 6h 30m · 27.6 kg CO₂e return
  6. Omagh, United Kingdom2.1 °C cooler · 8.7 h sun a day · 4.7 mm rain a dayair ≈ 4h · 186 kg CO₂e return
  7. Sligo, Ireland2.0 °C cooler · 8.7 h sun a day · 6.6 mm rain a day · sea 16.0 °Cair ≈ 4h 6m · 118 kg CO₂e return

Without flying

The coolest places the train reaches within 15 hours. Stirling is 2.2 °C cooler for 27.6 kg — about 15× less carbon than flying to Reykjavik.

  1. Stirling, United Kingdom2.2 °C cooler · 9.4 h sun a day · 4.1 mm rain a dayrail ≈ 6h 30m · 27.6 kg CO₂e return
  2. Irvine, United Kingdom2.0 °C cooler · 9.4 h sun a day · 7.6 mm rain a day · sea 15.6 °Crail ≈ 6h 12m · 26.0 kg CO₂e return
  3. Dundee, United Kingdom2.0 °C cooler · 10.5 h sun a day · 3.0 mm rain a day · sea 14.2 °Crail ≈ 6h 42m · 28.7 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 Sheffield in August within 15 hours is Reykjavik, 5.6 °C cooler, costing 419 kg CO₂e return. The lowest-carbon option is Ebbw Vale at 17.2 kg — 24× less carbon, for 3.4 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.

Ebbw ValeReykjavik
Where they are. Solid lines are rail or ferry, dashed are flights, from Sheffield. Pick one to compare.
Carbon against relief from the heat, August, departing Sheffield. Journeys of up to 15 hours each way.2 destinations. Lowest carbon Ebbw Vale at 17.2 kilograms and 2.2 °C cooler; best for relief from the heat Reykjavik at 419 kilograms and 5.6 °C cooler. Ebbw Vale · 17.2 kgReykjavik · 419 kg

By rail or ferry By air

Carbon against relief from the heat, August, departing Sheffield. Journeys of up to 15 hours each way.
August from Sheffield — 2 destinations on the frontier, 1 without flying.
DestinationHowCO₂e returnTempSun/dayRain/dayJourney
Ebbw Vale, United KingdomRail17.2 kg14.1 °C8.6 h3.7 mm4h 36m
Reykjavik, IcelandAir419 kg10.7 °C8.6 h3.8 mm5h 42m

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 (17.2 kg, 2.2 °C cooler) to Reykjavik (419 kg, 5.6 °C cooler) buys 3.4 °C more relief from the heat for an extra 401 kg — 118 kg of CO₂e per degree. That single step is the most expensive relief from the heat on the whole curve.

The pick of them

Ebbw Vale, United KingdomEbbw ValeUnited Kingdom17.2 kg CO₂e return14.1 °C · 8.6 h sun · 4h 36m by railmild and brightReykjavik, IcelandReykjavikIceland419 kg CO₂e return10.7 °C · 8.6 h sun · 5h 42m 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 Sheffield

August from elsewhere

Photo credits

Questions

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

Reykjavik, Iceland, at 5.6 °C cooler. Reaching it emits 419 kg CO₂e return, travelling 5h 42m each way by air (modelled).

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

Yes. Ebbw Vale reaches 2.2 °C cooler and is reachable by rail or ferry in 4h 36m (modelled), emitting 17.2 kg CO₂e return — though Reykjavik is cooler still, if you fly.

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

419 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.