By the time the first proper gale rattles down the Channel, most of the good winter berths in a marina are already taken. That is the first thing to understand about winter mooring: it is not a decision to leave until October. The second is that a berth which feels idyllic in July, with the sun on the pontoon and the swell rolling gently under the transom, can become a completely different proposition in February, when the wind is screaming from the south-west and the water is coming over the breakwater. Choosing well means visiting in person, asking blunt questions, and understanding exactly what you are paying for.

Start With Shelter, Not Scenery

The single most important quality of a winter berth is shelter. A pretty view of the estuary means nothing if the berth lies open to the prevailing wind. In the UK that usually means south-westerlies, though the east coast has its own northerly and easterly challenges, and the Irish Sea and west of Scotland can serve up almost anything.

Look at the geography rather than the brochure. Is there a headland, a harbour wall or a wooded valley breaking the fetch? How far does the wind travel over open water before it reaches your pontoon? Ask the berthing master which direction causes trouble and what they do when it arrives. A good answer mentions specific winds and specific dates. A vague one usually means they have not thought about it, or would rather you did not.

Also consider the type of berth. A finger pontoon in the sheltered inner basin will generally be calmer than a hammerhead on the outer wall, even in the same marina. If you are offered the choice, take the inner berth and accept the longer walk to the showers.

Check Power, Water and Access Before You Commit

Winter is when the small practicalities start to matter. On a short summer stay you can live without shore power. Over five months of dark afternoons, short days and a dehumidifier running most of the time, you cannot.

• Power supply: Ask how many amps are available at the pedestal and whether metering is included or charged separately. Some marinas cap usage or charge peak rates.
• Water: Confirm that fresh water stays connected through the winter. Many marinas isolate taps during frost, which means carrying jerrycans down a slippery pontoon.
• Access: Check gate codes, fob systems and whether pedestrian access is 24 hours. Some sites lock the shore gate at night, which is fine until you need to get aboard at 2am.
• Parking and security: Ask about overnight parking, CCTV, regular patrols and whether the marina is manned around the clock or just during office hours.
• Facilities: Confirm winter opening times for toilets, showers and the laundry. A facility that closes at five in the afternoon is a very different thing in January.

Ask Exactly How They Prepare for Storms

Every marina will tell you it is safe in a blow. The useful question is what they actually do when a named storm is forecast. Listen for specifics: are additional lines and doubled moorings required, are fenders checked, are pontoons inspected, is there a member of staff on site through the night?

Ask whether they have a written severe weather plan and whether you can see it. Ask what happens to your boat if you are away and a storm arrives. Some marinas will walk the pontoons and adjust lines on your behalf; others will not touch a vessel without permission. Neither answer is wrong, but you need to know which you are getting.

It also pays to walk the pontoons yourself and look at the boats already there. Are the mooring lines doubled, with chafe protection fitted? Are the fenders adequate? A marina full of well-secured boats tells you something about the culture of the place, and about how seriously the neighbours take it.

Think About Winter Working Conditions

If you plan to do any maintenance, a few details transform the experience. Is there a chandlery or a workshop nearby? Can you get a contractor onto the boat, and does the marina charge for that? Many sites levy a fee on visiting trades, which is worth knowing before you book a rigger.

Check the walk ashore. Long, exposed pontoons get icy, and handrails matter more than you would think. Ask whether the marina grits walkways and whether the pontoons are lit. If you are lifting out rather than staying afloat, compare the cost of a winter berth with a yard space and cradle, including any charge for lift and relaunch.

Visit, Ask Around, and Read the Contract

None of this can be judged from a website. Go and see the place on a grey, windy day, not a sunny one. Talk to berth holders already there, ideally those who have overwintered before. Ask them what irritates them, what has gone wrong and what the staff are like when something breaks. Honest answers from the pontoon are worth more than any glossy brochure.

Finally, read the berthing agreement properly. Look at notice periods, whether you can leave early without penalty, what insurance is required, and what happens if the marina needs to move you to a different berth. Winter berths are rarely cheap, and the difference between a comfortable season and a stressful one often comes down to a handful of details that nobody thinks to ask about until the wind gets up. Ask them now, while the water is still calm.