0xCarbon
France · 47.66°, -2.76° · 20 m

Vannes

Reaching Vannes from London emits 13.8 kg CO₂e return by rail (9h 12m each way) against 118 kg by air — 9× the carbon. It averages 18.8 °C in August and 6.8 °C in January.

Vannes (Breton: Gwened) is the fifth-largest city in Brittany in France. — Wikivoyage, CC BY-SA 4.0

When to go: Vannes is warmest in August (18.8 °C), sunniest in June (12.5 h a day); coldest in January (6.8 °C). Month by month

13.8kg CO₂e return by rail, from London
118kg CO₂e return by air, from London
12.5hours of sunshine a day in June, its brightest month

Getting there

Return carbon and one-way journey time to Vannes. Times are modelled.
FromDistanceBy railRail timeBy airAir time
Amsterdam757 km22.3 kg9h 36m190 kg4h 30m
Barcelona798 km23.6 kg13h201 kg4h 36m
Berlin1,271 km37.5 kg15h320 kg5h 12m
Birmingham540 km26.9 kg12h136 kg4h 12m
Bristol423 km27.6 kg12h 12m106 kg4h 6m
Brussels626 km18.5 kg7h 42m158 kg4h 18m
Cardiff426 km30.8 kg12h 30m107 kg4h 6m
Copenhagen1,378 km40.7 kg20h 30m347 kg5h 18m
Dublin677 km——170 kg4h 24m
Edinburgh923 km56.7 kg15h232 kg4h 42m
Frankfurt879 km26.0 kg9h 54m221 kg4h 42m
Glasgow918 km58.5 kg15h 6m231 kg4h 42m
Leeds688 km35.7 kg12h 48m173 kg4h 24m
Lisbon1,119 km33.0 kg17h 54m282 kg5h
Liverpool640 km36.8 kg12h 48m161 kg4h 24m
London468 km13.8 kg9h 12m118 kg4h 6m
Madrid809 km23.9 kg13h 30m203 kg4h 36m
Manchester649 km34.9 kg12h 42m163 kg4h 24m
Milan945 km27.9 kg13h 18m238 kg4h 48m
Munich1,069 km31.5 kg12h269 kg4h 54m
Newcastle817 km45.8 kg13h 30m206 kg4h 36m
Nottingham600 km27.9 kg12h 18m151 kg4h 18m
Oslo1,619 km47.8 kg25h 24m407 kg5h 42m
Paris401 km11.8 kg4h 54m101 kg4h
Prague1,282 km37.8 kg18h 48m323 kg5h 12m
Rome1,362 km40.2 kg17h 18m343 kg5h 18m
Sheffield643 km32.1 kg12h 36m162 kg4h 24m
Southampton374 km22.8 kg11h 54m94.1 kg4h
Stockholm1,878 km55.4 kg26h 48m472 kg6h
Vienna1,423 km42.0 kg17h 6m358 kg5h 24m
Warsaw1,766 km52.1 kg22h 30m444 kg5h 54m
Zurich849 km25.1 kg10h 24m214 kg4h 36m

The year in Vannes

Average temperature, °C — warmest in August
January: 6.8 °C6.8 °CJanFebruary: 8.5 °CFebMarch: 9.5 °CMarApril: 11.1 °CAprMay: 14.6 °CMayJune: 18.1 °CJunJuly: 18.0 °CJulAugust: 18.8 °C18.8 °CAugSeptember: 17.5 °CSepOctober: 14.5 °COctNovember: 10.9 °CNovDecember: 9.0 °CDec
Sunshine, hours a day — brightest in June
January: 5.3 hJanFebruary: 5.4 hFebMarch: 7.4 hMarApril: 9.2 hAprMay: 11.7 hMayJune: 12.5 h12.5 hJunJuly: 10.8 hJulAugust: 10.8 hAugSeptember: 9.5 hSepOctober: 7.0 hOctNovember: 4.8 hNovDecember: 4.4 h4.4 hDec
Historical daily means for 2023–2024, by month (ERA5 reanalysis) — averaged across day and night
 JanFebMarAprMayJunJulAugSepOctNovDec
Temp °C6.88.59.511.114.618.118.018.817.514.510.99.0
Sun h/day5.35.47.49.211.712.510.810.89.57.04.84.4
Rain mm/day3.82.44.72.92.62.33.32.12.84.53.92.7

When to go

Vannes is warmest in August at 18.8 °C but brightest in June, averaging 12.5 hours of sun a day — the two do not always coincide, which is worth knowing before booking. Its coldest is January at 6.8 °C.

On these lists

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 France emits about 6.7 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 47 kg — about 4.0× the carbon of one person getting there by rail from Paris. Two sharing the room halve that share each; the journey does not halve.

How busy it gets

Morbihan records 10.2 overnight stays per resident a year (8,083,017 nights in 2025). 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 Vannes

Places to stay in Vannes, France, on a live map. Prices and availability come from Stay22 and its booking partners.

Search places to stay in Vannes →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.