March is one of the cooler months of the year in Port Saint Lucie, with average highs near 25.9°C and lows around 15.9°C (mean 20.9°C). It is one of the drier months, averaging 78 mm of rainfall and 73% relative humidity across the period.
March is one of the cooler months of the year in Port Saint Lucie. Across 45 years of records, the warmest Marchs in Port Saint Lucie were 2020 and 2023 — when the month averaged 24.1°C — while the coldest was 2010 at 16.7°C. Typical March days reach 25.9°C with nights near 15.9°C. The long-term trend is warming, about 0.6°C per decade.
March is one of the drier months in Port Saint Lucie, averaging 78 mm of rainfall. The wettest March on record was 1996 with 236 mm, while the driest was 2020 at 2 mm.
Relative humidity in Port Saint Lucie during March averages 73%. The most humid March was 1995 at 83%, and the least humid was 2013 at 61%.
March receives about 5.2 kWh/m²/day of solar energy in Port Saint Lucie. The sunniest March was 2018 at 6 kWh/m²/day, and the cloudiest was 1987 at 4.4.
Average wind speed in Port Saint Lucie during March is 3.1 m/s. The windiest March was 1983 at 3.8 m/s, while the calmest was 2015 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.0°C | 20.0°C | 21.3°C | 20.8°C | 23.1°C | +3.1°C |
| Avg High | 24.9°C | 24.8°C | 26.2°C | 26.1°C | 28.5°C | +3.6°C |
| Avg Low | 15.1°C | 15.3°C | 16.4°C | 15.6°C | 17.7°C | +2.6°C |
| Avg Rain | 113 mm | 107 mm | 66 mm | 62 mm | 27 mm | -86 mm |
March temperatures in Port Saint Lucie have risen by about 2.8°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 1.5°C (1993) to a record high of 34.2°C (2020).
Rainfall in March is one of the drier months, averaging 78 mm, with a wettest year of 236 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.8°C per decade while lows rose 0.5°C per decade, widening the gap between day and night.
One of the best times to visit Port Saint Lucie
March is one of the best times to visit Port Saint Lucie. Expect days averaging 25.9°C and nights around 15.9°C (mean 20.9°C) — cooler than Port Saint Lucie's yearly average — with moderate rainfall (78 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 27.9°C | 21.7°C | 15.5°C | 32.4°C | 9.3°C | 37 mm | 67% | 3.1 m/s | 5.8 |
| 2024 | 27.4°C | 22.8°C | 18.2°C | 30.8°C | 12.0°C | 34 mm | 76% | 2.8 m/s | 5.1 |
| 2023 | 29.7°C | 24.1°C | 18.5°C | 34.0°C | 11.7°C | 14 mm | 64% | 2.9 m/s | 5.7 |
| 2022 | 29.0°C | 23.6°C | 18.2°C | 32.2°C | 10.3°C | 53 mm | 69% | 3.4 m/s | 5.6 |
| 2021 | 27.3°C | 22.2°C | 17.1°C | 33.1°C | 11.6°C | 21 mm | 73% | 2.9 m/s | 5.5 |
| 2020 🔥 | 29.5°C | 24.1°C | 18.7°C | 34.2°C | 7.5°C | 2 mm | 67% | 3 m/s | 5.6 |
| 2019 | 26.5°C | 21.7°C | 16.8°C | 30.5°C | 8.8°C | 52 mm | 72% | 2.9 m/s | 5.1 |
| 2018 | 25.7°C | 19.6°C | 13.6°C | 31.0°C | 7.1°C | 18 mm | 64% | 3.1 m/s | 6 |
| 2017 | 27.0°C | 21.7°C | 16.5°C | 31.8°C | 7.2°C | 26 mm | 63% | 3.2 m/s | 5.5 |
| 2016 | 25.9°C | 21.7°C | 17.4°C | 29.2°C | 9.0°C | 75 mm | 79% | 2.6 m/s | 5 |
| 2015 | 28.4°C | 23.5°C | 18.5°C | 31.7°C | 11.6°C | 35 mm | 74% | 2.5 m/s | 5.3 |
| 2014 | 26.3°C | 20.9°C | 15.5°C | 30.7°C | 8.4°C | 55 mm | 71% | 3 m/s | 5.1 |
| 2013 | 24.3°C | 18.2°C | 12.2°C | 30.8°C | 4.2°C | 23 mm | 61% | 3.1 m/s | 5.6 |
| 2012 | 27.5°C | 22.7°C | 18.0°C | 30.5°C | 9.1°C | 54 mm | 70% | 3.1 m/s | 5.5 |
| 2011 | 27.2°C | 21.8°C | 16.3°C | 33.6°C | 7.8°C | 93 mm | 69% | 2.9 m/s | 5.5 |
| 2010 ❄️ | 22.1°C | 16.7°C | 11.3°C | 28.1°C | 2.7°C | 190 mm | 75% | 3.3 m/s | 5.2 |
| 2009 | 26.0°C | 20.8°C | 15.6°C | 30.7°C | 4.9°C | 38 mm | 69% | 3.2 m/s | 5.2 |
| 2008 | 25.7°C | 20.9°C | 16.2°C | 30.4°C | 7.0°C | 92 mm | 73% | 3.1 m/s | 5.1 |
| 2007 | 26.6°C | 21.7°C | 16.8°C | 31.4°C | 10.0°C | 23 mm | 66% | 3.4 m/s | 5.3 |
| 2006 | 25.8°C | 20.4°C | 15.1°C | 30.4°C | 8.3°C | 13 mm | 70% | 2.9 m/s | 5.8 |
| 2005 | 24.0°C | 19.0°C | 14.0°C | 29.5°C | 7.7°C | 155 mm | 78% | 2.8 m/s | 4.9 |
| 2004 | 26.0°C | 21.3°C | 16.6°C | 30.1°C | 9.8°C | 17 mm | 68% | 3.3 m/s | 5.4 |
| 2003 | 27.5°C | 23.4°C | 19.2°C | 30.6°C | 8.1°C | 104 mm | 82% | 2.6 m/s | 4.7 |
| 2002 | 26.3°C | 21.7°C | 17.0°C | 29.8°C | 6.8°C | 27 mm | 78% | 2.8 m/s | 5.4 |
| 2001 | 27.5°C | 21.9°C | 16.3°C | 32.1°C | 7.9°C | 129 mm | 66% | 3.4 m/s | 5 |
| 2000 | 26.9°C | 22.0°C | 17.0°C | 31.0°C | 13.1°C | 59 mm | 73% | 2.9 m/s | 5.4 |
| 1999 | 25.5°C | 19.7°C | 13.9°C | 29.4°C | 8.0°C | 18 mm | 67% | 3 m/s | 5.8 |
| 1998 | 22.5°C | 18.0°C | 13.6°C | 27.2°C | 5.3°C | 150 mm | 81% | 3.5 m/s | 5.3 |
| 1997 | 28.6°C | 23.8°C | 19.1°C | 31.1°C | 15.1°C | 75 mm | 71% | 3 m/s | 5.3 |
| 1996 🌧️ | 22.5°C | 17.7°C | 12.9°C | 28.2°C | 4.0°C | 236 mm | 79% | 3.5 m/s | 5.2 |
| 1995 | 24.2°C | 20.3°C | 16.5°C | 27.8°C | 11.8°C | 104 mm | 83% | 3 m/s | 4.6 |
| 1994 | 25.5°C | 20.6°C | 15.8°C | 30.0°C | 5.9°C | 61 mm | 76% | 3.1 m/s | 5.3 |
| 1993 | 22.7°C | 18.2°C | 13.8°C | 27.2°C | 1.5°C | 203 mm | 81% | 3.3 m/s | 4.8 |
| 1992 | 24.2°C | 19.4°C | 14.5°C | 27.8°C | 8.4°C | 50 mm | 76% | 2.9 m/s | 5 |
| 1991 | 25.5°C | 20.5°C | 15.5°C | 29.5°C | 6.9°C | 141 mm | 78% | 3.3 m/s | 4.7 |
| 1990 | 26.6°C | 21.9°C | 17.3°C | 30.4°C | 12.6°C | 32 mm | 69% | 3.2 m/s | 5.3 |
| 1989 | 26.9°C | 21.8°C | 16.7°C | 30.5°C | 9.3°C | 90 mm | 75% | 2.9 m/s | 4.8 |
| 1988 | 23.5°C | 18.7°C | 14.0°C | 27.3°C | 4.2°C | 118 mm | 77% | 3.1 m/s | 5.1 |
| 1987 | 23.8°C | 19.9°C | 16.0°C | 27.5°C | 8.2°C | 180 mm | 78% | 3.4 m/s | 4.4 |
| 1986 | 23.7°C | 19.2°C | 14.7°C | 29.1°C | 2.3°C | 115 mm | 75% | 3.4 m/s | 5.1 |
| 1985 | 27.4°C | 22.1°C | 16.8°C | 31.3°C | 9.7°C | 71 mm | 67% | 2.9 m/s | 5.3 |
| 1984 | 24.1°C | 19.2°C | 14.4°C | 29.2°C | 3.1°C | 81 mm | 75% | 3.1 m/s | 5.1 |
| 1983 | 22.2°C | 17.3°C | 12.4°C | 26.0°C | 4.7°C | 113 mm | 83% | 3.8 m/s | — |
| 1982 | 26.9°C | 22.3°C | 17.7°C | 31.4°C | 9.5°C | 213 mm | 77% | 2.7 m/s | — |
| 1981 | 25.3°C | 19.4°C | 13.6°C | 31.9°C | 6.9°C | 34 mm | 64% | 3.4 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 25.9°C with lows near 15.9°C (mean 20.9°C), based on 45 years of NASA POWER data.
March averages 78 mm of rainfall in Port Saint Lucie, one of the drier months. The wettest on record was 236 mm in 1996.
The hottest March reached 34.2°C in 2020. The coldest dipped to 1.5°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2.8°C. Daytime highs moved from 25.2°C to 28.3°C and overnight lows from 15°C to 17.5°C over the same span.
March is one of the cooler months of the year in Port Saint Lucie and one of the drier months, so plan for around 25.9°C daytime highs and 15.9°C at night.
Not quite — March is the 4th coolest month in Port Saint Lucie, averaging 20.9°C.
For March in Port Saint Lucie, pack light layers you can adjust through the day, with typical highs of 25.9°C and lows of 15.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 73% — moderately humid.
Average wind speed in March is 3.1 m/s. The windiest March on record averaged 3.8 m/s (1983).
The wettest March on record was 1996 with 236 mm. On average, March sees 78 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Port Saint Lucie behaves each March, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for March specifically, along with year-by-year records and how the month has changed over the decades.
