Glasgow · September · relief from the heat

Coolest places to go from Glasgow in September

In September, the coolest well-known place within 15 hours of Glasgow is Reykjavik, Iceland, 5.5 °C cooler than Glasgow and 6.3 h sun a day, about 5h 18m each way by air. Nowhere on the list is reachable by train within 15 hours in September.

The 4 coolest places within 15 hours of Glasgow

Ranked on relief from the heat in September 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, Iceland5.5 °C cooler · 6.3 h sun a day · 3.5 mm rain a day · sea 10.8 °Cair ≈ 5h 18m · 336 kg CO₂e return
Tromsø, Norway3.3 °C cooler · 4.9 h sun a day · 5.2 mm rain a dayair ≈ 6h · 480 kg CO₂e return
Östersund, Sweden2.3 °C cooler · 7.7 h sun a day · 2.6 mm rain a dayair ≈ 5h 18m · 335 kg CO₂e return
Bodø, Norway2.1 °C cooler · 5.2 h sun a day · 6.6 mm rain a day · sea 13.0 °Cair ≈ 5h 36m · 401 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 Glasgow in September within 15 hours is Reykjavik, 5.5 °C cooler, costing 336 kg CO₂e return. The lowest-carbon option is Östersund at 335 kg — 1× less carbon, for 3.2 degrees less relief from the heat.

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

By rail or ferry By air

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

September from Glasgow — 2 destinations on the frontier, 0 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Östersund, Sweden	Air	335 kg	10.7 °C	7.7 h	2.6 mm	5h 18m
Reykjavik, Iceland	Air	336 kg	7.5 °C	6.3 h	3.5 mm	5h 18m

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.

The pick of them

ÖstersundSweden335 kg CO₂e return10.7 °C · 7.7 h sun · 5h 18m by airmild and bright

ReykjavikIceland336 kg CO₂e return7.5 °C · 6.3 h sun · 5h 18m by aircool

The same month, asked differently

September 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 Glasgow

September from elsewhere

Photo credits

Östersund: Lars Falkdalen Lindahl (User:Njaelkies Lea), 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

Questions

Where is the coolest place to go from Glasgow in September?

Reykjavik, Iceland, at 5.5 °C cooler. Reaching it emits 336 kg CO₂e return, travelling 5h 18m each way by air (modelled).

Can I get somewhere cool from Glasgow in September without flying?

Not within 15 hours. Every destination on this frontier requires flying in September.

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

336 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.