The ideal window
For most of the UK, the best time to paint a house exterior is from late April to late September. Days are longer, temperatures are usually above the minimum for exterior paints, and the weather is more settled. Late spring and early autumn are often ideal – warm enough, but not so hot that paint dries too fast.
In Scotland and northern England, the reliable window may be a little shorter. In mild coastal areas of the South West, painters sometimes work into October.
| Months | Suitability | Watch out for |
|---|---|---|
| December – February | Poor | Frost, short days, damp walls |
| March – April | Fair to good | Cold nights, showers |
| May – June | Very good | Occasional heavy rain |
| July – August | Good | Direct midday sun, heatwaves |
| September | Very good | Dew in the mornings |
| October – November | Fair to poor | Early frosts, short days, damp |
Exterior painting conditions month by month (typical UK)
What painters look for
Exterior paint needs the right conditions both during application and while it dries. Most manufacturers specify minimum temperatures, typically around 5–10°C for air and surface. Painters will also look at:
- A dry wall – render and brick can stay damp for days after heavy rain
- No rain forecast for several hours after painting
- No frost overnight while the paint cures
- Not too hot – very high temperatures and direct sun cause paint to dry too fast
- Low wind, especially if spraying
- Enough daylight to finish sections before evening dew
Why painting in poor weather fails
Paint applied to a damp wall can blister and peel. Paint that gets rained on before it cures can wash off or streak. Paint applied in freezing conditions may not form a proper film. Even if it looks fine at first, it may fail early – which is why good painters stop work when conditions aren't right, even if it delays the job.
Rather leave it to a professional?
Book early
Good exterior painters book up quickly once spring arrives. If you want your house painted in May or June, start getting quotes in January or February. If you can be flexible, early autumn can be a good time to find availability, and the weather in September is often excellent.
What about winter?
Winter is generally a poor time for exterior painting, but there are exceptions – small jobs such as a front door, done on a dry, mild day, or emergency repairs. Many painters switch to interior work in winter, which can be a good time to book your interior decorating.
For more on planning, see our guide to how much it costs to paint a 3-bed house exterior, and get quotes from local exterior painters.
