Viseu
Reaching Viseu from London emits 39.7 kg CO₂e return by rail (19h 54m each way) against 338 kg by air — 9× the carbon. It averages 23.6 °C in August and 7.9 °C in December.
Viseu is a charming hilltop city and district capital (around 53,000 inhabitants) in central Portugal. — Wikivoyage, CC BY-SA 4.0
When to go: Viseu is warmest in August (23.6 °C), sunniest in July (13.5 h a day); coldest in December (7.9 °C). Month by month
Getting there
| From | Distance | By rail | Rail time | By air | Air time |
|---|---|---|---|---|---|
| Amsterdam | 1,624 km | 47.9 kg | 20h 18m | 409 kg | 5h 42m |
| Barcelona | 848 km | 25.0 kg | 10h 18m | 213 kg | 4h 36m |
| Berlin | 2,082 km | 61.4 kg | 25h 36m | 524 kg | 6h 18m |
| Birmingham | 1,391 km | 52.8 kg | 22h 36m | 350 kg | 5h 24m |
| Bristol | 1,267 km | 53.4 kg | 22h 54m | 319 kg | 5h 12m |
| Brussels | 1,475 km | 43.5 kg | 18h 18m | 371 kg | 5h 30m |
| Cardiff | 1,256 km | 56.7 kg | 23h 12m | 316 kg | 5h 12m |
| Copenhagen | 2,240 km | 66.1 kg | 31h 6m | 563 kg | 6h 30m |
| Dublin | 1,415 km | — | — | 356 kg | 5h 24m |
| Edinburgh | 1,735 km | 82.6 kg | 25h 36m | 436 kg | 5h 48m |
| Frankfurt | 1,662 km | 49.0 kg | 20h 36m | 418 kg | 5h 42m |
| Glasgow | 1,711 km | 84.3 kg | 25h 48m | 431 kg | 5h 48m |
| Leeds | 1,536 km | 61.6 kg | 23h 30m | 386 kg | 5h 30m |
| Lisbon | 240 km | 7.1 kg | 5h | 60.4 kg | 3h 48m |
| Liverpool | 1,465 km | 62.7 kg | 23h 30m | 369 kg | 5h 30m |
| London | 1,345 km | 39.7 kg | 19h 54m | 338 kg | 5h 18m |
| Madrid | 356 km | 10.5 kg | 7h 12m | 89.7 kg | 4h |
| Manchester | 1,488 km | 60.7 kg | 23h 24m | 374 kg | 5h 30m |
| Milan | 1,485 km | 43.8 kg | 23h 12m | 373 kg | 5h 30m |
| Munich | 1,750 km | 51.6 kg | 22h 42m | 440 kg | 5h 48m |
| Newcastle | 1,658 km | 71.7 kg | 24h 6m | 417 kg | 5h 42m |
| Nottingham | 1,459 km | 53.8 kg | 23h | 367 kg | 5h 24m |
| Oslo | 2,498 km | 73.7 kg | 38h 6m | 628 kg | 6h 48m |
| Paris | 1,217 km | 35.9 kg | 15h 30m | 306 kg | 5h 6m |
| Prague | 2,023 km | 59.7 kg | 29h 30m | 509 kg | 6h 12m |
| Rome | 1,708 km | 50.4 kg | 26h 42m | 430 kg | 5h 48m |
| Sheffield | 1,495 km | 58.0 kg | 23h 18m | 376 kg | 5h 30m |
| Southampton | 1,244 km | 48.7 kg | 22h 36m | 313 kg | 5h 12m |
| Stockholm | 2,750 km | 81.1 kg | 37h 30m | 692 kg | 7h 12m |
| Vienna | 2,091 km | 61.7 kg | 27h 48m | 526 kg | 6h 18m |
| Warsaw | 2,537 km | 74.9 kg | 33h 6m | 638 kg | 6h 54m |
| Zurich | 1,508 km | 44.5 kg | 21h | 379 kg | 5h 30m |
The year in Viseu
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp °C | 8.0 | 9.0 | 10.7 | 14.2 | 15.8 | 19.4 | 22.0 | 23.6 | 18.4 | 16.2 | 12.4 | 7.9 |
| Sun h/day | 6.1 | 8.2 | 7.6 | 10.8 | 11.5 | 12.9 | 13.5 | 12.8 | 10.3 | 6.3 | 6.6 | 7.3 |
| Rain mm/day | 5.3 | 2.8 | 5.0 | 2.3 | 2.3 | 3.6 | 0.2 | 0.0 | 3.1 | 8.7 | 4.4 | 1.6 |
When to go
Viseu is warmest in August at 23.6 °C but brightest in July, averaging 13.5 hours of sun a day — the two do not always coincide, which is worth knowing before booking. Its coldest is December at 7.9 °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 Portugal emits about 19 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 133 kg — about 18.7× the carbon of one person getting there by rail from Lisbon. Two sharing the room halve that share each; the journey does not halve.
How busy it gets
Viseu Dão Lafões records 2.7 overnight stays per resident a year (693,695 nights in 2025). 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 Viseu
Places to stay in Viseu, Portugal, on a live map. Prices and availability come from Stay22 and its booking partners.
Search places to stay in Viseu →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.