When is the best time to paint a house exterior?
By J. James Painting Contractors. Updated . 7 min read.
Short answer
On the Sunshine Coast, the easiest time to paint a house exterior is July to October. Bureau of Meteorology records for Sunshine Coast Airport show that's the driest four-month run of the year, with about 5 to 7 days of rain a month. February to April get 11 or more. Average highs sit between 21 and 26 degrees through that window, so it's not cold work either.
That said, any month can work if you pick the day. The paint makers set the real limits. Dulux's data sheet for Weathershield says not to paint when the air or the wall is below 10°C, or when it may drop below 10°C while the paint dries. Dulux also says rain or overnight dew on wet paint can damage it. Below is the local weather, month by month, set against what the paint can handle.
Short answer: July to October is the easiest window
The Sunshine Coast's wet stretch runs from about December to May. February is the wettest month at Sunshine Coast Airport, averaging 217.5 mm, and May still averages 164.7 mm. Then the rain drops away. July and August average about 70 mm each, and September is the driest month of the year at 51.1 mm. October and November creep back up to around 90 mm, still well under half of February.
Fewer rain days means fewer lost days on the job. It also means less chance of a shower landing on paint that's still drying. Afternoons are drier in the air too. Average 3pm humidity is 59% in July and August, against 70% or more in January and February. Dulux tells painters to skip excessively humid days.
Winter has one catch. Nights get cool. July's average low is 9.7°C, just under the 10°C minimum in Dulux's Weathershield data sheet and the bottom of the 10 to 35°C range Taubmans gives painters. So winter painting days start once the morning has warmed up, and they finish early. Dulux's advice for cold days is to stop with enough time for the paint to dry before evening.
Sunshine Coast weather month by month
Here's the full year at the Bureau of Meteorology's Sunshine Coast Airport station. September and August have the fewest rain days. March has the most, at about twice as many.
| Month | Avg high (°C) | Avg low (°C) | Rain (mm) | Rain days | 3pm humidity |
|---|---|---|---|---|---|
| January | 29.1 | 21.3 | 153.0 | 10.3 | 70% |
| February | 28.9 | 21.4 | 217.5 | 11.7 | 71% |
| March | 28.0 | 20.3 | 187.7 | 12.5 | 69% |
| April | 26.1 | 17.1 | 147.3 | 11.1 | 68% |
| May | 23.6 | 13.8 | 164.7 | 10.1 | 65% |
| June | 21.5 | 11.2 | 104.7 | 8.7 | 63% |
| July | 21.2 | 9.7 | 70.8 | 6.9 | 59% |
| August | 22.3 | 10.1 | 70.4 | 5.4 | 59% |
| September | 24.4 | 13.0 | 51.1 | 5.4 | 63% |
| October | 25.8 | 15.8 | 90.1 | 7.3 | 66% |
| November | 27.3 | 18.0 | 88.3 | 7.3 | 67% |
| December | 28.4 | 19.9 | 151.8 | 10.0 | 69% |
These are long-term averages. A dry September can still throw a wet week at you, and a February can hand you a clear run. The table gives you the odds. The forecast tells you the day. The station sits 3 metres above sea level at the airport, so treat the numbers as a guide for the coastal strip. Over a full year it records about 1,490 mm of rain across roughly 107 rain days.
What the paint can handle: temperature, rain and dew
Exterior paint has limits, and the makers publish them. We use Dulux Weathershield and Taubmans All Weather as our default exterior paints, so these are the rules that decide our painting days.
| Condition | What the maker says | What it means on the Coast |
|---|---|---|
| Cold | Dulux data sheet: not below 10°C (air or wall), including while Weathershield dries | The coldest month averages a 9.7°C low, so cold mornings matter more than cold days |
| Temperature range | Taubmans advice to painters: 10 to 35°C | Average highs run from 21.2 to 29.1°C, inside the range all year |
| Rain | Dulux: don't paint when rain is forecast | February to April average 11 or more rain days, so expect more stop-start |
| Dew | Dulux: rain or overnight dew on drying paint can damage it or wash it off | Finish each day early enough for the last coat to dry before evening |
| Humidity | Dulux: don't paint on excessively humid days | 3pm humidity is lowest in July and August, at 59% |
| Recoat | Weathershield: 2 hours at 25 degrees and 50% humidity. All Weather: 2 hours | Average afternoon humidity on the Coast sits above 50% in every month |
Heat is the other limit. Taubmans' range tops out at 35°C, and it says wrinkling happens when the paint surface dries faster than the layer under it, often because of high temperatures or heavy coats. Taubmans calls that a common summer problem. Dulux's advice for hot days is simple. If you're painting in the hottest part of the day, work on the shady side of the house. Cold and damp cause trouble too. Taubmans says they can leave paint tacky or sagging, and names wet seasons in the north as a common time for it.
How long after rain can you paint? When the surface is properly dry
The Dulux and Taubmans guidance we checked doesn't give a set number of hours to wait after rain. What matters is whether the wall itself is dry.
Dulux's trade advice gives one hard number for timber. If bare timber has a moisture content above 15%, it isn't fit to paint and has to dry out first. Dulux says a portable moisture meter can quickly check the moisture level.
Why it matters: Dulux explains that moisture trapped under fresh paint turns to vapour when the sun heats the wall. It can't get out, so it pushes the paint up into blisters. Dulux says it's often quite severe on weatherboards facing north or west. If you've already got bubbles or flaking, our guide on why exterior paint peels walks through the causes.
The other half of the rule is about rain after painting. Dulux says rain or dew on paint that's still drying can damage it or strip it off. You also need a dry forecast for the hours after the last coat goes on.
Booking ahead: get the quote in before the dry months
If you want your exterior done in the July to October window, sort the quote out early. We give a free quote after a quick site visit, usually inside a business day. Most of our full exteriors run five to ten working days, depending on access. A single-storey house with clear ground around it goes quicker than a two-storey on a slope.
Those working days still need dry weather, so a job that starts in September has room to absorb a wet day or two before the rain builds again in December. You can see what's involved on our exterior house painting page, and check whether your suburb is on our Sunshine Coast service area list. For a rough idea of budget first, read the exterior house painting cost guide.
Second storeys, roof edges and high eaves are a job for a painter with the right access gear, like scaffold. If you're doing the low parts yourself, stop at what you can reach safely from the ground.
Prep and the paint system matter too. For how long a good exterior job should hold up in Queensland sun, see how long exterior paint lasts. When you're ready, send us your details and we'll come and look.
Common questions
Questions people ask
What is the best month to paint the exterior of my house?
On the Sunshine Coast, September is the driest month on average at the airport weather station, with 51.1 mm of rain and about 5 days of rain. August has the same number of rain days and, with July, the lowest afternoon humidity. July is close behind, and October and November come next at around 90 mm. Any of those months gives you good odds of a clean run.
When not to paint the exterior?
Skip days with rain forecast, and skip very humid or cold days, as Dulux advises. Don't paint below 10°C. That's the minimum in Dulux's Weathershield data sheet, and the bottom of the ideal range Taubmans gives painters. Late afternoon is risky too, because dew can land on paint that hasn't dried. And on hot days, keep out of direct sun in the middle of the day. Dulux suggests painting the shady side of the house then.
Is October too late to paint outside?
Not on the Sunshine Coast. October averages 90.1 mm of rain and about 7 days of rain, with highs near 26°C. That's still far drier than February to April. Rain picks up properly from December, which averages 151.8 mm. October is a good month to start, as long as you watch the forecast day to day.
What weather is too hot to paint outside?
Taubmans gives painters an ideal range of 10 to 35°C. Taubmans says high temperatures or heavy coats can make the top of the paint dry faster than the layer under it, which causes wrinkling. On the Sunshine Coast, the hottest month is January, with average highs of 29.1°C, so the problem is hot days rather than a hot season. On those days, paint walls once the sun has moved off them.
How long after rain to paint an exterior?
Wait until the surface is properly dry. Dulux and Taubmans don't give a set number of hours. Dulux's trade advice says bare timber above 15% moisture content has to dry out before painting, and a moisture meter is the way to check. Painting over a damp surface traps the water, and the sun later pushes it out as blisters.
What is the best exterior paint for a hot climate?
We use Dulux Weathershield and Taubmans All Weather as our defaults on Sunshine Coast homes. Dulux lists strong sun protection and resistance to colour fading for Weathershield. Taubmans describes All Weather as built for the tough Australian climate. Both makers list a recoat time of 2 hours, which Dulux bases on 25 degrees and 50% humidity.
How long does it take to paint a house exterior?
Most of our full exteriors take five to ten working days. Access is the biggest variable, so a two-storey house on a sloping block takes longer than a single-storey one with clear ground. If you're aiming for the drier months, book the free site visit early so the work lands in that window.
Where to next
Sources
- Climate statistics for Australian locations: Sunshine Coast Airport, Bureau of Meteorology. Accessed 4 October 2026.
- Weathershield Low Sheen, Dulux Australia. Accessed 4 October 2026.
- Dulux Weathershield Low Sheen data sheet (AUDU00073), Dulux Australia. Accessed 4 October 2026.
- Taubmans All Weather Exterior Paint, Taubmans. Accessed 4 October 2026.
- Manage Coating Performance Issues: Flaking, Cracking and Wrinkling, Taubmans. Accessed 4 October 2026.
- How to Fix Blistering of Exterior Decorative Paints, Dulux Trade. Accessed 4 October 2026.