Castro Urdiales
Reaching Castro Urdiales from Madrid emits 9.8 kg CO₂e return by rail (6h 30m each way) against 83.6 kg by air — 9× the carbon. It averages 21.3 °C in August and 10.0 °C in January.
Getting there
| From | Distance | By rail | Rail time | By air | Air time |
|---|---|---|---|---|---|
| Amsterdam | 1,167 km | 34.4 kg | 18h | 294 kg | 5h 6m |
| Barcelona | 494 km | 14.6 kg | 8h 48m | 124 kg | 4h 12m |
| Berlin | 1,596 km | 47.1 kg | 23h 48m | 401 kg | 5h 36m |
| Birmingham | 1,016 km | 40.6 kg | 17h | 256 kg | 4h 54m |
| Bristol | 899 km | 41.3 kg | 17h 6m | 226 kg | 4h 42m |
| Brussels | 1,008 km | 29.7 kg | 15h 48m | 253 kg | 4h 48m |
| Cardiff | 900 km | 44.5 kg | 17h 42m | 227 kg | 4h 42m |
| Copenhagen | 1,771 km | 52.3 kg | 26h 12m | 445 kg | 5h 54m |
| Dublin | 1,129 km | — | — | 284 kg | 5h |
| Edinburgh | 1,398 km | 70.4 kg | 22h 6m | 352 kg | 5h 24m |
| Frankfurt | 1,174 km | 34.6 kg | 18h 6m | 295 kg | 5h 6m |
| Glasgow | 1,390 km | 72.2 kg | 22h 24m | 350 kg | 5h 24m |
| Leeds | 1,164 km | 49.4 kg | 18h 30m | 293 kg | 5h 6m |
| Lisbon | 718 km | 21.2 kg | 11h 48m | 181 kg | 4h 30m |
| Liverpool | 1,115 km | 50.6 kg | 18h 42m | 281 kg | 5h |
| London | 933 km | 27.5 kg | 14h 48m | 235 kg | 4h 42m |
| Madrid | 332 km | 9.8 kg | 6h 30m | 83.6 kg | 3h 54m |
| Manchester | 1,125 km | 48.6 kg | 18h 18m | 283 kg | 5h |
| Milan | 1,011 km | 29.8 kg | 15h 48m | 254 kg | 4h 48m |
| Munich | 1,261 km | 37.2 kg | 19h 18m | 317 kg | 5h 12m |
| Newcastle | 1,294 km | 59.5 kg | 20h 12m | 326 kg | 5h 12m |
| Nottingham | 1,075 km | 41.6 kg | 17h 12m | 270 kg | 4h 54m |
| Oslo | 2,066 km | 61.0 kg | 30h 18m | 520 kg | 6h 18m |
| Paris | 744 km | 22.0 kg | 12h 12m | 187 kg | 4h 30m |
| Prague | 1,532 km | 45.2 kg | 23h | 385 kg | 5h 30m |
| Rome | 1,296 km | 38.2 kg | 19h 42m | 326 kg | 5h 12m |
| Sheffield | 1,119 km | 45.8 kg | 17h 54m | 282 kg | 5h |
| Southampton | 847 km | 36.5 kg | 16h 18m | 213 kg | 4h 36m |
| Stockholm | 2,288 km | 67.5 kg | 33h 18m | 575 kg | 6h 36m |
| Vienna | 1,606 km | 47.4 kg | 24h | 404 kg | 5h 36m |
| Warsaw | 2,046 km | 60.4 kg | 30h | 515 kg | 6h 12m |
| Zurich | 1,019 km | 30.1 kg | 15h 54m | 256 kg | 4h 54m |
The year in Castro Urdiales
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp °C | 10.0 | 10.4 | 12.7 | 13.5 | 15.2 | 19.0 | 20.5 | 21.3 | 19.4 | 18.2 | 14.3 | 10.7 |
| Sun h/day | 5.2 | 6.4 | 7.9 | 9.3 | 10.6 | 10.5 | 10.9 | 10.1 | 9.6 | 7.2 | 6.2 | 5.3 |
| Rain mm/day | 5.9 | 4.2 | 2.7 | 3.1 | 3.8 | 2.7 | 1.6 | 2.2 | 4.6 | 4.9 | 5.7 | 4.3 |
When to go
Castro Urdiales is warmest in August at 21.3 °C but brightest in July, averaging 10.9 hours of sun a day — the two do not always coincide, which is worth knowing before booking. Its coldest is January at 10.0 °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 5.0× the carbon of getting there by rail from Madrid.
How busy it gets
Cantabria records 10.3 overnight stays per resident a year (6,117,130 nights in 2024). A well-visited region, busy in season but not overwhelmed.
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 Castro Urdiales
Places to stay in Castro Urdiales, 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.