Exterior painting is the one trade where the calendar makes the decision for you. Not the paint, not the preparation, not how good the decorator is — the weather, and specifically about five months of it.
Get the timing right and a coating lasts a decade. Get it wrong and it can fail in its first winter, having looked perfect on the day it went on.
In short
- April to September is the reliable window in Greater Manchester. May, June and September are the best of it.
- Surfaces need to be above roughly 8°C, and the surface matters more than the air temperature.
- Evening dew ruins more exterior jobs than daytime rain does. Stop early in spring and autumn.
- October is possible but narrow. If the job can wait, it is better in April.
- Spring slots book out in February. Nobody thinks about the outside of their house until the sun appears, by which point it is too late.
The short answer: April to September
If you want one sentence, that is it. Five months in which the days are long enough, the temperatures are high enough, and the ground and walls have dried out from winter.
Within that window there is a hierarchy. Late spring and early summer are the best of it — long days, the lowest rainfall of the year in the north-west, and walls that have had months to dry out. September is the underrated month: often settled, still warm enough, and far easier to book than June.
July and August are perfectly good with one caveat covered below, which is that a south-facing wall in direct sun can be a harder surface to paint than a cold one.
A month-by-month calendar for Greater Manchester
- January and February. Interiors only, realistically. Too cold, too wet, and the days are too short for a coating to form before the temperature drops. Useful months for surveys and for booking spring in.
- March. Occasionally usable at the end of the month, on a sheltered south-facing elevation, in a settled spell. Nights are still near freezing, so it is a gamble rather than a plan.
- April. The window opens. Days are long enough for a proper drying period and walls are drying out. Preparation-heavy jobs start here.
- May and June. The best two months of the year, and the reason spring diaries fill. Long days, low rainfall, warm enough for anything.
- July and August. Good, but follow the shade round the building. A dark render in full sun gets considerably hotter than the air, and coatings dry too fast on it.
- September. Frequently the most settled month of the lot and much easier to book. If you missed summer, this is the one to aim for.
- October. Narrowing. Damp mornings, an early dew and a short working day. Possible on the right week, but see below.
- November and December. Interiors. Anything exterior at this point is being done in hope rather than judgement.
Temperature: the numbers that actually matter
Most exterior masonry and timber coatings want a surface above roughly 5 to 8°C depending on the product, both while they are applied and while they cure, with 8 the safer figure to work to. A few specialist low-temperature products go lower — some are formulated down to around 2°C — but they are the exception and the tin will say so plainly if it applies.
The important word there is surface. It is the surface temperature that decides whether a coating works, and air temperature is simply what the forecast happens to give you. A north-facing wall in April can sit several degrees below the air around it, having had no sun on it since October. A south-facing wall in July can be far above it. The wall is what the paint touches.
The second thing people miss is that the minimum applies for the whole curing period, not just the moment of application. A coating put on at two in the afternoon at 11°C, on a day that drops to 4°C by nine that evening, has not had the conditions it needed. It may look fine. It will not last like a coating applied in June.
Why the evening matters more than the afternoon
This is the part that separates a job that lasts from one that does not, and almost nobody outside the trade thinks about it.
As the air cools in the evening, it can only hold so much moisture. At a certain point — the dew point — that moisture condenses out onto surfaces. On a fresh coating that has not yet formed a proper film, that condensation causes real damage: patchy sheen, tan or brown streaking where the water pulls ingredients out of the paint, and a film that never quite hardens as it should.
In spring and autumn the gap between a pleasant afternoon and dew forming can be two or three hours. A fourteen-degree afternoon in early October can be a five-degree evening with condensation on every north-facing surface by seven.
The practical rule is to stop early enough that the coating has properly formed before the temperature falls. In April and September that often means finishing by mid-afternoon rather than working to six o’clock — which is exactly why an exterior job in shoulder season takes more days than the same job in June, and why a quote that assumes otherwise is optimistic.
Rain, drying windows and the reality of a Manchester summer
Rain matters at both ends. Before the job, because masonry and render hold water for days after a wet spell and a damp wall will blister a coating from behind. After it, because rain on an unformed film washes it, streaks it, or takes it off entirely.
The forecast that matters is not the hour you start but the following twenty-four to forty-eight. Two dry hours after a coat goes on is not the same thing as two dry days, and manufacturers’ touch-dry times are not the same as rain-resistant times.
Which is why nobody working outdoors in the north-west paints to a fixed schedule. Exterior work is planned around settled spells, and a decorator who is honest about that will occasionally move you by a few days. Someone who guarantees a date in April regardless of what the sky is doing is telling you something about how they work.
Access is the other reason weather delays cost money. Where a job needs towers or scaffold, as most work on larger detached properties does, the equipment is up and standing whether it rains or not.
Can you paint outside in October?
Sometimes, and with conditions. It is the single most asked question of the autumn, so it deserves a straight answer.
October can work if you get a settled week, if you are on a south or west-facing elevation, if the surface is genuinely dry going in, and if you stop by early afternoon. On that combination a good job is entirely possible.
What makes it a gamble is that all four have to line up. Mornings stay damp far later than they look, the useful working day is perhaps five hours rather than nine, and the risk of dew landing on a fresh coat rises every week from about the middle of the month.
The honest answer to “is October too late?” is this. If the paintwork is failing and water is getting into timber, do it now — an imperfect coating this month beats an exposed window frame until April. If it is a cosmetic refresh, wait. It will be a better job in spring, it will cost you nothing to wait, and you will get a longer life out of it.
What can still be done in winter
Plenty, just not masonry and joinery outdoors.
- Interiors. The obvious one, and the reason winter is the busiest season for most decorators. Whole-house repaints, kitchens, halls, stairs and landings.
- Surveys and quotes. A wall can be assessed in February perfectly well. Getting the survey done in winter is how you end up with a spring slot.
- Covered and sheltered areas. Porches, car ports, garage interiors and anything under cover behaves more like an interior than an exterior.
- Preparation, in dry spells. Not always efficient, but on a large exterior with a lot of stripping and filling to do, getting it prepared over winter means coating can start the moment conditions allow.
Most of our winter work is interior painting, and that is true across the trade. It is also why the good exterior slots are gone by the time the weather turns.
How often the outside actually needs doing
Timing the year is one question. Timing the decade is another, and it is worth knowing what you should expect from a properly prepared exterior before deciding whether this year is the year.
Durability by surface
- Masonry paint on render or pebbledash — 8 to 12 years. Sheltered elevations at the longer end.
- Smooth render, fully stabilised — 10 to 15 years. Assumes cracks were cut out rather than bridged.
- Fascias, soffits and barge boards — 5 to 8 years. Only if the gutters stay clear.
- Exterior joinery and window frames — 3 to 5 years. Sills go first, every time.
- Front door — 4 to 6 years. Full sun shortens it considerably.
Garden timber runs shorter again, and fails for reasons of its own — covered in why fence paint will not stick.
Does the Manchester climate shorten those figures?
On exposed elevations, yes. The north-west takes more rainfall than most of England and a great deal of it arrives horizontally, driven onto west and south-west facing walls. Those elevations weather faster than the same wall would in Cambridgeshire, and they are the ones to inspect first.
Elevation and exposure matter as much as postcode. A property on the Pennine fringe around Marple and the SK6 villages takes noticeably more weather than a sheltered terrace in the middle of town, and its timber comes round for attention sooner.
Preparation affects the figures more than the climate does, though. A properly stabilised, filled and primed wall in an exposed spot will outlast a rushed one in a sheltered garden every time.
Why spring slots go first
Here is the awkward commercial truth, stated plainly because it is useful to you.
A decorator’s entire exterior capacity for a year is about five months. Everyone wants those months, and almost everybody thinks about the outside of their house at the same moment — the first properly warm weekend, usually in March or April. By then the good slots have gone to the people who rang in January.
So the practical advice is: get the survey done in winter. It costs nothing, the wall can be assessed perfectly well in February, and it puts you in the diary before the rush. Ringing in May about an exterior is usually a conversation about August.
Frequently asked questions
What months can you paint outside in the UK?
April to September is the practical window in Greater Manchester, with May, June and September the most reliable of those. March can occasionally work at the very end of the month on a sheltered elevation in a settled spell, and October sometimes does, but both are gambles rather than plans. November through February is interior season.
Is October too late to paint the exterior?
Not automatically, but the window is narrow. You need a settled week, a dry surface going in, ideally a south or west-facing elevation, and you have to stop by early afternoon so the coating forms before dew lands on it. If the paintwork is actually failing and water is getting into timber, October is far better than waiting. If it is a cosmetic refresh, spring will give you a better job and a longer life.
What weather is too cold to paint outside?
Most exterior coatings want the surface above roughly 5 to 8°C during application and while curing, with 8 the safer figure, though some specialist low-temperature products go down to around 2°C. The key word is surface — a north-facing wall can sit several degrees below the air temperature the forecast is telling you. And the minimum has to hold overnight, not just at the moment the brush touches the wall.
When should you not paint the exterior?
When the surface is damp, when rain is forecast within the next day, when the temperature will drop below the minimum before the coating has cured, and when a wall is in full direct sun on a hot day. That last one surprises people — a coating that dries too fast does not flow out or bond properly, so on a bright day it is better to follow the shade round the building than to work straight through.
How often should a house exterior be repainted?
Masonry paint on render typically holds eight to twelve years, smooth render longer, fascias and soffits five to eight, and exterior joinery three to five. Front doors and window sills go first because they take the most sun and water. If timber is flaking or render feels chalky to the touch, it is due regardless of what the calendar says.
Does exterior paint last less time in the Manchester climate?
On exposed elevations, yes. The north-west gets more rainfall than most of England and much of it is wind-driven onto west and south-west facing walls, which weather faster as a result. Preparation makes a bigger difference than geography, though — a properly stabilised and primed wall in an exposed spot will outlast a rushed one in a sheltered garden.
Can anything be painted outside in winter?
Sheltered and covered areas behave more like interiors — porches, car ports and garage interiors are all fine. Beyond that, winter is for interiors, surveys and preparation. It is also the sensible time to book exterior work for spring, because by the time the weather turns the good slots have already gone.
