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Jersey · 49.19°, -2.10° · 11 m

Saint Helier

Saint Helier, Jersey
Photo: Danrok, CC BY-SA 3.0, via Wikimedia Commons

Saint Helier is not costed by rail here: no through rail connection is modelled, and no verified rail or sea itinerary is included in this comparison. By air it is 73.9 kg CO₂e return from London. It averages 18.2 °C in August and 7.8 °C in January.

Jersey is the largest and southernmost of the Channel Islands. — Wikivoyage, CC BY-SA 4.0

When to go: Saint Helier is warmest in August (18.2 °C), sunniest in June (13.2 h a day); coldest in January (7.8 °C). Month by month

73.9kg CO₂e return by air, from London
13.2hours of sunshine a day in June, its brightest month

Getting there

Return carbon and one-way journey time to Saint Helier. Times are modelled.
FromDistanceBy railRail timeBy airAir time
Amsterdam606 km——152 kg4h 18m
Barcelona929 km——234 kg4h 42m
Berlin1,148 km——289 kg5h
Birmingham366 km——92.2 kg4h
Bristol255 km——64.0 kg3h 48m
Brussels497 km——125 kg4h 12m
Cardiff266 km——66.9 kg3h 54m
Copenhagen1,225 km——308 kg5h 6m
Dublin543 km——137 kg4h 12m
Edinburgh756 km——190 kg4h 30m
Frankfurt783 km——197 kg4h 30m
Glasgow757 km——190 kg4h 30m
Leeds514 km——129 kg4h 12m
Lisbon1,292 km——325 kg5h 12m
Liverpool473 km——119 kg4h 6m
London294 km——73.9 kg3h 54m
Madrid983 km——247 kg4h 48m
Manchester477 km——120 kg4h 6m
Milan945 km——238 kg4h 48m
Munich1,010 km——254 kg4h 48m
Newcastle644 km——162 kg4h 24m
Nottingham424 km——107 kg4h 6m
Oslo1,447 km——364 kg5h 24m
Paris327 km——82.2 kg3h 54m
Prague1,192 km——300 kg5h 6m
Rome1,394 km——351 kg5h 24m
Sheffield469 km——118 kg4h 6m
Southampton197 km——49.6 kg3h 48m
Stockholm1,717 km——432 kg5h 48m
Vienna1,357 km——341 kg5h 18m
Warsaw1,655 km——416 kg5h 42m
Zurich813 km——205 kg4h 36m

The year in Saint Helier

Average temperature, °C — warmest in August
January: 7.8 °C7.8 °CJanFebruary: 9.0 °CFebMarch: 9.4 °CMarApril: 10.6 °CAprMay: 13.4 °CMayJune: 16.3 °CJunJuly: 17.5 °CJulAugust: 18.2 °C18.2 °CAugSeptember: 17.4 °CSepOctober: 15.0 °COctNovember: 11.7 °CNovDecember: 10.0 °CDec
Sunshine, hours a day — brightest in June
January: 4.6 hJanFebruary: 5.0 hFebMarch: 6.9 hMarApril: 9.1 hAprMay: 12.2 hMayJune: 13.2 h13.2 hJunJuly: 10.8 hJulAugust: 10.5 hAugSeptember: 9.0 hSepOctober: 7.2 hOctNovember: 4.2 hNovDecember: 3.8 h3.8 hDec
Sea temperature, °C — warmest in September
January: 10.6 °CJanFebruary: 9.6 °C9.6 °CFebMarch: 9.7 °CMarApril: 10.8 °CAprMay: 12.8 °CMayJune: 15.2 °CJunJuly: 17.1 °CJulAugust: 18.2 °CAugSeptember: 18.3 °C18.3 °CSepOctober: 17.0 °COctNovember: 14.7 °CNovDecember: 11.9 °CDec
Historical daily means for 2023–2024, by month (ERA5 reanalysis) — averaged across day and night; sea temperature NOAA OISST v2.1, 2023–2024, nearest open sea
 JanFebMarAprMayJunJulAugSepOctNovDec
Temp °C7.89.09.410.613.416.317.518.217.415.011.710.0
Sun h/day4.65.06.99.112.213.210.810.59.07.24.23.8
Rain mm/day3.62.53.42.21.51.03.42.83.33.45.63.0
Sea °C10.69.69.710.812.815.217.118.218.317.014.711.9

When to go

Saint Helier is warmest in August at 18.2 °C but brightest in June, averaging 13.2 hours of sun a day — the two do not always coincide, which is worth knowing before booking. Its coldest is January at 7.8 °C.

Three months worth booking

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

Where to stay in Saint Helier

Places to stay in Saint Helier, Jersey, on a live map. Prices and availability come from Stay22 and its booking partners.

Search places to stay in Saint Helier →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.