The best time of year to paint in South Florida (with the weather data)

November through April. Those six months carry roughly 17–20 inches of the 62–65 inches that fall on Fort Lauderdale and West Palm Beach in a year, against about 39 inches in June to October at Fort Lauderdale alone [1][2]. Temperature is not the constraint here — rain, dew point and hot surfaces are.

Key numbers

• South Florida rainy season: May 15 – October 15 [3]
• Fort Lauderdale rainfall normals: 2.36 in in February and 2.37 in in March, against 9.92 in in June and 8.11 in in September [1]
• Dry season, November to April: roughly 17–20 in of a 62–65 in annual total at both airports [1][2]
• Afternoon relative humidity: about 55% in March and April, about 65–66% in September [4]
• Application range: 50°F–90°F, 70°F ideal, over 100°F a film can dry before it adheres [11]
• Surface must be at least 5°F above the dew point, and stay in range for 48 hours after application [6][11]
• Hurricane season June 1 – November 30; NOAA's August 2026 outlook was 7–13 named storms and 2–6 hurricanes [5]

The rainfall, month by month

These are the 1991–2020 climate normals for the two airport stations, derived from the National Weather Service's published daily normals [1][2]. The pattern is the useful part: the wet half of the year holds roughly twice the rain of the dry half, and it is concentrated in afternoon convection rather than spread through the day.

Rain days tell the same story from a different angle, though from a weaker source: a third-party aggregator puts Fort Lauderdale at about 11 rainy days in January against about 25 in September [12]. We have not been able to confirm that against NOAA's own day-count normals, so read it as directional.

Humidity, and the rule that actually governs

Manufacturers do not publish a humidity ceiling. They publish a dew point rule, because that is the physics that matters: paint fails when moisture condenses on or in the film, and whether it does depends on the gap between the surface temperature and the dew point, not on the relative humidity reading.

Sherwin-Williams requires air and material at least 5°F above the dew point and asks that conditions stay in range and above it for 48 hours after application [6][11]. PPG requires the same 5°F margin, adds a substrate moisture limit of 12% and a pH limit of 13, and warns against late-day application when condensation can form [10]. Benjamin Moore's guidance is to paint when the surface is more than 5°F above the dew point, to avoid direct sunlight, and to measure surface temperature with an infrared thermometer rather than guessing [9].

Regional humidity data explains why the dry season gives you more margin: afternoon relative humidity runs about 55% in March and April against 65–66% in September, with mornings above 80% all year [4].

Temperature: the limit that never binds here

The published safe range for exterior application is 50°F to 90°F, with 70°F described as ideal and temperatures over 100°F capable of drying a film before it has adhered [11]. Sherwin-Williams Duration is specified down to 35°F and asks that temperatures not drop below that within 48 hours of application [6]; Benjamin Moore's Aura Exterior is specified for 35°F to 100°F [8]; PPG's Perma-Crete is narrower, 50°F to 90°F, maintained for 24 hours after application [10].

South Florida never reaches the bottom of any of those. Normal winter lows at West Palm Beach are in the high fifties [2], so the cold-weather rules that govern painting in most of the country are not the ones that govern it here. What does bind is the top: a dark wall in full afternoon sun in July is far hotter than the air, which is why exterior work follows the shade around a building rather than the clock.

Hurricane season

The Atlantic hurricane season runs June 1 to November 30, peaking August through October — the same months as the heaviest rain [5]. NOAA's August 2026 update forecast 7–13 named storms, 2–6 hurricanes and 0–2 major hurricanes, with a 75% chance of a below-normal season, against the 1991–2020 averages of 14 named storms, 7 hurricanes and 3 major [5].

A quiet forecast does not make it a good window for exterior coatings. One storm in the wrong week undoes a schedule, exterior work stops entirely under a watch or warning, and a wall that has been soaked has to dry before anything else happens.

If the work has to happen in summer

It can, with three adjustments. Coats go on in the morning so the film has the whole day to cure before dew forms. The specification favors a coating with a short recoat window — 4 hours for a standard exterior acrylic rather than the 24 hours an elastomeric system asks for [6][7] — unless the wall genuinely needs the elastomeric. And the schedule carries named catch-up days rather than a promise that assumes no rain in a month that averages 8.06 inches of it [1].

Booking

The dry season is six months long and every contractor in South Florida is working in it. If the exterior needs stucco repair, that repair has to cure before it can be coated, which moves the paint date again. Boards planning a community repaint and homeowners planning a whole-house exterior generally need to start the conversation in late summer to be painting in the dry season.

Interiors are a different question

None of this governs interior work. Inside a conditioned building the weather is whatever the air conditioning says it is, so interiors are scheduled around the household or the tenancy rather than the season — which is exactly why interior work is the sensible thing to book in the months when exteriors cannot run.

The one interior constraint that does follow the climate is cure time on enamels. Indoor humidity is high here even with the air conditioning on, and every waterborne alkyd data sheet says the same thing: high humidity prolongs dry, recoat and cure times [8]. That affects trim, doors and cabinets, not walls.

How Smart Coat handles this

We schedule exteriors around the two things that actually stop work — rain in the recoat window and dew before the film has cured — rather than around a calendar that assumes neither. In the rainy season that means morning coats, watching the surface rather than the air, and days named in the schedule for weather rather than absorbed silently into the end date.

We will also say when the season is wrong for the specification. If a wall needs an elastomeric system and it is August, the honest answer is that the two-day recoat cycle and the afternoon storms do not fit together well, and that the job is better in November.

More on exterior painting, waterproofing and HOA and community painting, or read how a project runs and get a date on the calendar.