Barcelona
Reaching Barcelona from Madrid emits 14.9 kg CO₂e return by rail (8h 54m each way) against 127 kg by air — 9× the carbon. It averages 25.8 °C in August and 9.0 °C in January.
Getting there
| From | Distance | By rail | Rail time | By air | Air time |
|---|---|---|---|---|---|
| Amsterdam | 1,239 km | 36.6 kg | 19h | 312 kg | 5h 12m |
| Berlin | 1,500 km | 44.3 kg | 22h 30m | 377 kg | 5h 30m |
| Birmingham | 1,271 km | 46.7 kg | 19h 48m | 320 kg | 5h 12m |
| Bristol | 1,177 km | 47.3 kg | 19h 54m | 296 kg | 5h 6m |
| Brussels | 1,065 km | 31.4 kg | 16h 36m | 268 kg | 4h 54m |
| Cardiff | 1,194 km | 50.6 kg | 20h 30m | 300 kg | 5h 6m |
| Copenhagen | 1,759 km | 51.9 kg | 26h 6m | 443 kg | 5h 48m |
| Dublin | 1,469 km | — | — | 370 kg | 5h 30m |
| Edinburgh | 1,665 km | 76.5 kg | 24h 54m | 419 kg | 5h 42m |
| Frankfurt | 1,093 km | 32.3 kg | 17h | 275 kg | 5h |
| Glasgow | 1,676 km | 78.2 kg | 25h 12m | 421 kg | 5h 42m |
| Leeds | 1,407 km | 55.5 kg | 21h 18m | 354 kg | 5h 24m |
| Lisbon | 1,006 km | 29.7 kg | 15h 48m | 253 kg | 4h 48m |
| Liverpool | 1,391 km | 56.6 kg | 21h 30m | 350 kg | 5h 24m |
| London | 1,139 km | 33.6 kg | 17h 36m | 286 kg | 5h |
| Madrid | 504 km | 14.9 kg | 8h 54m | 127 kg | 4h 12m |
| Manchester | 1,384 km | 54.6 kg | 21h 12m | 348 kg | 5h 18m |
| Milan | 726 km | 21.4 kg | 11h 54m | 183 kg | 4h 30m |
| Munich | 1,055 km | 31.1 kg | 16h 24m | 265 kg | 4h 54m |
| Newcastle | 1,536 km | 65.6 kg | 23h | 386 kg | 5h 30m |
| Nottingham | 1,310 km | 47.7 kg | 20h | 329 kg | 5h 12m |
| Oslo | 2,143 km | 63.2 kg | 31h 18m | 539 kg | 6h 24m |
| Paris | 830 km | 24.5 kg | 13h 24m | 209 kg | 4h 36m |
| Prague | 1,354 km | 39.9 kg | 20h 30m | 341 kg | 5h 18m |
| Rome | 862 km | 25.4 kg | 13h 48m | 217 kg | 4h 36m |
| Sheffield | 1,361 km | 51.9 kg | 20h 42m | 342 kg | 5h 18m |
| Southampton | 1,093 km | 42.6 kg | 19h 6m | 275 kg | 5h |
| Stockholm | 2,279 km | 67.2 kg | 33h 12m | 573 kg | 6h 30m |
| Vienna | 1,350 km | 39.9 kg | 20h 30m | 340 kg | 5h 18m |
| Warsaw | 1,864 km | 55.0 kg | 27h 30m | 469 kg | 6h |
| Zurich | 836 km | 24.7 kg | 13h 24m | 210 kg | 4h 36m |
The year in Barcelona
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp °C | 9.0 | 10.2 | 12.9 | 14.6 | 17.2 | 22.0 | 25.2 | 25.8 | 21.5 | 19.1 | 14.3 | 9.7 |
| Sun h/day | 7.7 | 8.6 | 10.2 | 11.1 | 12.5 | 12.3 | 13.4 | 12.2 | 10.2 | 8.9 | 7.5 | 7.7 |
| Rain mm/day | 0.7 | 1.3 | 1.2 | 2.8 | 2.0 | 2.1 | 0.9 | 1.5 | 2.6 | 3.2 | 1.7 | 0.6 |
When to go
Barcelona is warmest in August at 25.8 °C but brightest in July, averaging 13.4 hours of sun a day — the two do not always coincide, which is worth knowing before booking. Its coldest is January at 9.0 °C.
Staying there
A hotel room in Spain emits about 7 kg CO₂e per night under UK Government 2026 factors, so a week adds roughly 49 kg — about 3.3× the carbon of getting there by rail from Madrid.
How busy it gets
Barcelona records 6.9 overnight stays per resident a year (41,221,572 nights in 2024). Comparatively quiet by European standards.
Eurostat, nights spent at tourist accommodation by NUTS 3 region, against resident population. Shown for context only — it plays no part in which destinations appear or in what order. Eurostat does not cover the United Kingdom after 2016, nor North Africa or the Levant at all, so this figure is absent for roughly a third of the destinations here.
Where to stay in Barcelona
Places to stay in Barcelona, Spain, on a live map. Prices and availability come from Stay22 and its booking partners.
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.
Distances are great-circle. Rail assumes international rail at 0.01135 kg CO₂e per passenger-km with a 1.3× track detour allowance; flights use 0.12576 kg per passenger-km including radiative forcing. Journey times are modelled, not timetabled. Full method.