0xCarbon
Portugal · 39.82°, -7.49° · 371 m

Castelo Branco

Castelo Branco, Portugal
Photo: Vitor Oliveira from Torres Vedras, PORTUGAL, CC BY-SA 2.0, via Wikimedia Commons

Reaching Castelo Branco from London emits 41.9 kg CO₂e return by rail (20h 18m each way) against 357 kg by air — 9× the carbon. It averages 25.8 °C in August and 8.1 °C in December.

Castelo Branco is a city of 56,000 people (2011) in central Portugal. — Wikivoyage, CC BY-SA 4.0

When to go: Castelo Branco is warmest in August (25.8 °C), sunniest in July (13.8 h a day); coldest in December (8.1 °C). Month by month

41.9kg CO₂e return by rail, from London
357kg CO₂e return by air, from London
13.8hours of sunshine a day in July, its brightest month

Getting there

Return carbon and one-way journey time to Castelo Branco. Times are modelled.
FromDistanceBy railRail timeBy airAir time
Amsterdam1,686 km49.7 kg20h 42m424 kg5h 42m
Barcelona833 km24.6 kg9h 54m209 kg4h 36m
Berlin2,127 km62.8 kg26h535 kg6h 18m
Birmingham1,471 km54.9 kg23h370 kg5h 30m
Bristol1,347 km55.6 kg23h 18m339 kg5h 18m
Brussels1,532 km45.2 kg18h 42m385 kg5h 30m
Cardiff1,338 km58.8 kg23h 36m337 kg5h 18m
Copenhagen2,297 km67.8 kg31h 30m578 kg6h 36m
Dublin1,505 km——379 kg5h 30m
Edinburgh1,821 km84.7 kg26h458 kg5h 54m
Frankfurt1,705 km50.3 kg21h429 kg5h 48m
Glasgow1,799 km86.5 kg26h 12m453 kg5h 54m
Leeds1,617 km63.7 kg23h 54m407 kg5h 42m
Lisbon188 km5.5 kg4h 12m47.3 kg3h 48m
Liverpool1,549 km64.9 kg23h 54m390 kg5h 36m
London1,418 km41.9 kg20h 18m357 kg5h 24m
Madrid329 km9.7 kg6h 48m82.7 kg3h 54m
Manchester1,570 km62.9 kg23h 48m395 kg5h 36m
Milan1,498 km44.2 kg23h 12m377 kg5h 30m
Munich1,777 km52.4 kg23h 6m447 kg5h 54m
Newcastle1,740 km73.8 kg24h 30m438 kg5h 48m
Nottingham1,537 km55.9 kg23h 24m387 kg5h 30m
Oslo2,569 km75.8 kg39h 6m646 kg6h 54m
Paris1,271 km37.5 kg15h 54m320 kg5h 12m
Prague2,056 km60.7 kg29h 54m517 kg6h 12m
Rome1,694 km50.0 kg26h 30m426 kg5h 48m
Sheffield1,575 km60.1 kg23h 42m396 kg5h 36m
Southampton1,320 km50.8 kg23h332 kg5h 18m
Stockholm2,810 km82.9 kg37h 54m707 kg7h 12m
Vienna2,112 km62.3 kg28h 12m531 kg6h 18m
Warsaw2,572 km75.9 kg33h 30m647 kg6h 54m
Zurich1,536 km45.3 kg21h 24m386 kg5h 30m

The year in Castelo Branco

Average temperature, °C — warmest in August
January: 8.2 °CJanFebruary: 9.3 °CFebMarch: 11.5 °CMarApril: 15.8 °CAprMay: 17.6 °CMayJune: 21.5 °CJunJuly: 24.6 °CJulAugust: 25.8 °C25.8 °CAugSeptember: 19.6 °CSepOctober: 16.9 °COctNovember: 12.4 °CNovDecember: 8.1 °C8.1 °CDec
Sunshine, hours a day — brightest in July
January: 6.7 h6.7 hJanFebruary: 8.4 hFebMarch: 8.7 hMarApril: 11.7 hAprMay: 12.0 hMayJune: 13.0 hJunJuly: 13.8 h13.8 hJulAugust: 12.9 hAugSeptember: 10.7 hSepOctober: 7.3 hOctNovember: 6.8 hNovDecember: 7.4 hDec
Historical daily means for 2023–2024, by month (ERA5 reanalysis) — averaged across day and night
 JanFebMarAprMayJunJulAugSepOctNovDec
Temp °C8.29.311.515.817.621.524.625.819.616.912.48.1
Sun h/day6.78.48.711.712.013.013.812.910.77.36.87.4
Rain mm/day3.71.82.71.11.53.00.00.02.24.03.00.6

When to go

Castelo Branco is warmest in August at 25.8 °C but brightest in July, averaging 13.8 hours of sun a day — the two do not always coincide, which is worth knowing before booking. Its coldest is December at 8.1 °C.

Three months worth booking

The same year of measurements, decided rather than tabulated. Each opens the map below on dates in that month.

warmestAugust25.8 °C · 12.9 h sun · 0.0 mm rainSee rooms in August →sunniest and driestJuly24.6 °C · 13.8 h sun · 0.0 mm rainSee rooms in July →

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 24.2× 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

Beira Baixa records 3.5 overnight stays per resident a year (353,716 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 Castelo Branco

Places to stay in Castelo Branco, Portugal, on a live map. Prices and availability come from Stay22 and its booking partners.

Search places to stay in Castelo Branco →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.