Mainz
Reaching Mainz from London emits 18.2 kg CO₂e return by rail (9h 18m each way) against 155 kg by air — 9× the carbon. It averages 20.9 °C in August and 3.4 °C in January.
Mainz is the capital and largest city of the state of Rhineland-Palatinate in Germany. — Wikivoyage, CC BY-SA 4.0
When to go: Mainz is warmest in August (20.9 °C), sunniest in June (12.4 h a day); coldest in January (3.4 °C). Month by month
Getting there
| From | Distance | By rail | Rail time | By air | Air time |
|---|---|---|---|---|---|
| Amsterdam | 356 km | 10.5 kg | 6h 24m | 89.5 kg | 4h |
| Barcelona | 1,066 km | 31.5 kg | 14h 18m | 268 kg | 4h 54m |
| Berlin | 455 km | 13.4 kg | 6h 42m | 115 kg | 4h 6m |
| Birmingham | 761 km | 31.2 kg | 12h | 191 kg | 4h 30m |
| Bristol | 782 km | 31.9 kg | 12h 18m | 197 kg | 4h 30m |
| Brussels | 295 km | 8.7 kg | 5h 36m | 74.1 kg | 3h 54m |
| Cardiff | 823 km | 35.1 kg | 12h 36m | 207 kg | 4h 36m |
| Copenhagen | 695 km | 20.5 kg | 12h | 175 kg | 4h 24m |
| Dublin | 1,067 km | — | — | 268 kg | 4h 54m |
| Edinburgh | 1,013 km | 61.1 kg | 15h | 255 kg | 4h 54m |
| Glasgow | 1,062 km | 62.8 kg | 15h 12m | 267 kg | 4h 54m |
| Leeds | 796 km | 40.0 kg | 12h 54m | 200 kg | 4h 36m |
| Lisbon | 1,859 km | 54.9 kg | 28h 48m | 468 kg | 6h |
| Liverpool | 863 km | 41.2 kg | 12h 54m | 217 kg | 4h 42m |
| London | 615 km | 18.2 kg | 9h 18m | 155 kg | 4h 18m |
| Madrid | 1,415 km | 41.8 kg | 17h 54m | 356 kg | 5h 24m |
| Manchester | 821 km | 39.2 kg | 12h 48m | 207 kg | 4h 36m |
| Milan | 507 km | 15.0 kg | 9h 18m | 128 kg | 4h 12m |
| Munich | 316 km | 9.3 kg | 6h | 79.4 kg | 3h 54m |
| Newcastle | 869 km | 50.1 kg | 13h 30m | 219 kg | 4h 42m |
| Nottingham | 731 km | 32.2 kg | 12h 24m | 184 kg | 4h 30m |
| Oslo | 1,115 km | 32.9 kg | 18h 6m | 281 kg | 5h |
| Paris | 447 km | 13.2 kg | 6h 12m | 112 kg | 4h 6m |
| Prague | 439 km | 12.9 kg | 8h 24m | 110 kg | 4h 6m |
| Rome | 957 km | 28.2 kg | 12h 48m | 241 kg | 4h 48m |
| Sheffield | 770 km | 36.4 kg | 12h 42m | 194 kg | 4h 30m |
| Southampton | 693 km | 27.1 kg | 12h | 174 kg | 4h 24m |
| Stockholm | 1,212 km | 35.8 kg | 17h 12m | 305 kg | 5h 6m |
| Vienna | 621 km | 18.3 kg | 10h 36m | 156 kg | 4h 18m |
| Warsaw | 922 km | 27.2 kg | 14h 12m | 232 kg | 4h 42m |
| Zurich | 291 km | 8.6 kg | 6h 12m | 73.3 kg | 3h 54m |
The year in Mainz
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp °C | 3.4 | 6.1 | 7.8 | 9.9 | 15.3 | 19.7 | 20.7 | 20.9 | 17.9 | 12.6 | 6.8 | 4.3 |
| Sun h/day | 3.9 | 5.5 | 6.7 | 9.1 | 10.6 | 12.4 | 11.6 | 10.6 | 9.6 | 6.1 | 4.0 | 2.2 |
| Rain mm/day | 2.1 | 1.7 | 2.7 | 2.3 | 2.9 | 1.5 | 3.9 | 2.2 | 1.7 | 2.8 | 2.7 | 1.7 |
When to go
Mainz is warmest in August at 20.9 °C but brightest in June, averaging 12.4 hours of sun a day — the two do not always coincide, which is worth knowing before booking. Its coldest is January at 3.4 °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 Germany emits about 13.2 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 92 kg — about 10.7× the carbon of one person getting there by rail from Zurich. Two sharing the room halve that share each; the journey does not halve.
How busy it gets
Mainz, Kreisfreie Stadt records 5.2 overnight stays per resident a year (1,159,125 nights in 2024). 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 Mainz
Places to stay in Mainz, Germany, on a live map. Prices and availability come from Stay22 and its booking partners.
Search places to stay in Mainz →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.