Weatheo

Port St. Lucie Weather by Month

Average temperatures, rainfall and humidity for Port St. Lucie, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Port St. Lucie month looks like before you travel — then check the live Port St. Lucie forecast for the days ahead.

Warmest month

July

32°C average high

Coolest month

January

14°C average low

Wettest month

September

103 mm of rain

Driest month

March

26 mm of rain

Average temperature and rainfall in Port St. Lucie by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January23°C14°C0°C / 30°C
48 mm
75%12 km/h
February25°C15°C-2°C / 32°C
34 mm
73%13 km/h
March26°C17°C2°C / 34°C
26 mm
70%13 km/h
April28°C19°C8°C / 34°C
51 mm
70%14 km/h
May30°C21°C10°C / 35°C
75 mm
73%13 km/h
June31°C24°C19°C / 38°C
101 mm
78%11 km/h
July32°C24°C20°C / 36°C
74 mm
79%10 km/h
August32°C25°C21°C / 37°C
72 mm
80%11 km/h
September31°C24°C18°C / 36°C
103 mm
80%11 km/h
October29°C22°C8°C / 33°C
93 mm
77%13 km/h
November26°C18°C4°C / 33°C
51 mm
76%13 km/h
December25°C16°C3°C / 31°C
48 mm
77%12 km/h

Best time to visit Port St. Lucie

The most comfortable time to visit Port St. Lucie is generally December to February, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around September, totalling about 775 mm a year.

Travellers who prefer heat should aim for July, when highs average 32°C. September is the month to avoid if rain would spoil your plans — it averages 103 mm, roughly 4× the rainfall of the driest month (March).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Port St. Lucie forecast for what is happening now.

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