Castro Urdiales
Reaching Castro Urdiales from London emits 27.5 kg CO₂e return by rail (12h 48m each way) against 235 kg by air — 9× the carbon. It averages 21.3 °C in August and 10.0 °C in January.
Castro Urdiales is a fishing harbour and beach resort on the coast of Cantabria in northern Spain, with a population of 33,400 in 2025. — Wikivoyage, CC BY-SA 4.0
When to go: Castro Urdiales is warmest in August (21.3 °C), sunniest in July (10.9 h a day); coldest in January (10.0 °C). Month by month
Getting there
| From | Distance | By rail | Rail time | By air | Air time |
|---|---|---|---|---|---|
| Amsterdam | 1,167 km | 34.4 kg | 13h 12m | 294 kg | 5h 6m |
| Barcelona | 494 km | 14.6 kg | 7h 24m | 124 kg | 4h 12m |
| Berlin | 1,596 km | 47.1 kg | 18h 36m | 401 kg | 5h 36m |
| Birmingham | 1,016 km | 40.6 kg | 15h 36m | 256 kg | 4h 54m |
| Bristol | 899 km | 41.3 kg | 15h 48m | 226 kg | 4h 42m |
| Brussels | 1,008 km | 29.7 kg | 11h 18m | 253 kg | 4h 48m |
| Cardiff | 900 km | 44.5 kg | 16h 6m | 227 kg | 4h 42m |
| Copenhagen | 1,771 km | 52.3 kg | 24h 6m | 445 kg | 5h 54m |
| Dublin | 1,129 km | — | — | 284 kg | 5h |
| Edinburgh | 1,398 km | 70.4 kg | 18h 36m | 352 kg | 5h 24m |
| Frankfurt | 1,174 km | 34.6 kg | 13h 30m | 295 kg | 5h 6m |
| Glasgow | 1,390 km | 72.2 kg | 18h 42m | 350 kg | 5h 24m |
| Leeds | 1,164 km | 49.4 kg | 16h 24m | 293 kg | 5h 6m |
| Lisbon | 718 km | 21.2 kg | 12h 24m | 181 kg | 4h 30m |
| Liverpool | 1,115 km | 50.6 kg | 16h 24m | 281 kg | 5h |
| London | 933 km | 27.5 kg | 12h 48m | 235 kg | 4h 42m |
| Madrid | 332 km | 9.8 kg | 6h 18m | 83.6 kg | 3h 54m |
| Manchester | 1,125 km | 48.6 kg | 16h 18m | 283 kg | 5h |
| Milan | 1,011 km | 29.8 kg | 16h 24m | 254 kg | 4h 48m |
| Munich | 1,261 km | 37.2 kg | 15h 36m | 317 kg | 5h 12m |
| Newcastle | 1,294 km | 59.5 kg | 17h 6m | 326 kg | 5h 12m |
| Nottingham | 1,075 km | 41.6 kg | 15h 54m | 270 kg | 4h 54m |
| Oslo | 2,066 km | 61.0 kg | 31h 48m | 520 kg | 6h 18m |
| Paris | 744 km | 22.0 kg | 8h 30m | 187 kg | 4h 30m |
| Prague | 1,532 km | 45.2 kg | 22h 24m | 385 kg | 5h 30m |
| Rome | 1,296 km | 38.2 kg | 20h 6m | 326 kg | 5h 12m |
| Sheffield | 1,119 km | 45.8 kg | 16h 12m | 282 kg | 5h |
| Southampton | 847 km | 36.5 kg | 15h 30m | 213 kg | 4h 36m |
| Stockholm | 2,288 km | 67.5 kg | 30h 24m | 575 kg | 6h 36m |
| Vienna | 1,606 km | 47.4 kg | 20h 42m | 404 kg | 5h 36m |
| Warsaw | 2,046 km | 60.4 kg | 26h 6m | 515 kg | 6h 12m |
| Zurich | 1,019 km | 30.1 kg | 14h | 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 |
| Sea °C | 14.2 | 13.3 | 13.3 | 14.1 | 15.8 | 19.1 | 21.4 | 22.7 | 21.6 | 19.6 | 17.1 | 14.9 |
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.
Three months worth booking
The same year of measurements, decided rather than tabulated. Each opens the map below on dates in that month.
Staying there
A hotel room in Spain emits about 7 kg CO₂e per night under UK Government 2026 factors — a country average per occupied room, not this or any particular hotel. 7 nights in one room adds roughly 49 kg — about 5.0× the carbon of one person getting there by rail from Madrid. Two sharing the room halve that share each; the journey does not halve.
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.
Search places to stay in Castro Urdiales →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.
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.