January is one of the cooler months of the year in Port Saint Lucie, with average highs near 22.2°C and lows around 12.8°C (mean 17.5°C). It is one of the drier months, averaging 58 mm of rainfall and 78% relative humidity across the period.
January is one of the cooler months of the year in Port Saint Lucie. Across 45 years of records, the warmest January in Port Saint Lucie was 1989 — when the month averaged 21.2°C — while the coldest was 1981 at 13.1°C. Typical January days reach 22.2°C with nights near 12.8°C. The long-term trend is warming, about 0.3°C per decade.
January is one of the drier months in Port Saint Lucie, averaging 58 mm of rainfall. The wettest January on record was 2016 with 219 mm, while the driest was 2012 at 3 mm.
Relative humidity in Port Saint Lucie during January averages 78%. The most humid January was 1993 at 87%, and the least humid was 1981 at 68%.
January receives about 3.4 kWh/m²/day of solar energy in Port Saint Lucie. The sunniest Januarys were 2009 and 2012 at 3.9 kWh/m²/day, and the cloudiest was 1988 at 2.6.
Average wind speed in Port Saint Lucie during January is 2.9 m/s. The windiest January was 2018 at 3.5 m/s, while the calmest was 2002 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.6°C | 18.3°C | 17.1°C | 17.5°C | 18.1°C | +1.5°C |
| Avg High | 21.6°C | 22.4°C | 22.0°C | 22.3°C | 22.9°C | +1.3°C |
| Avg Low | 11.6°C | 14.1°C | 12.3°C | 12.7°C | 13.4°C | +1.8°C |
| Avg Rain | 51 mm | 92 mm | 34 mm | 71 mm | 33 mm | -18 mm |
January temperatures in Port Saint Lucie have risen by about 2.1°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -4.8°C (1985) to a record high of 29.7°C (2017).
Rainfall in January is one of the drier months, averaging 58 mm, with a wettest year of 219 mm.
A good time to visit Port Saint Lucie
January is a good time to visit Port Saint Lucie, with days averaging 22.2°C and nights around 12.8°C (mean 17.5°C, cooler than Port Saint Lucie's yearly average) and moderate rainfall. November and April are marginally more temperate, but January still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 21.7°C | 16.4°C | 11.2°C | 28.2°C | 4.8°C | 32 mm | 76% | 3.1 m/s | 3.3 |
| 2024 | 22.5°C | 18.4°C | 14.4°C | 27.6°C | 7.6°C | 76 mm | 82% | 3.2 m/s | 2.8 |
| 2023 | 24.2°C | 19.3°C | 14.3°C | 28.8°C | 2.7°C | 14 mm | 78% | 2.4 m/s | 3.7 |
| 2022 | 22.7°C | 17.9°C | 13.0°C | 29.0°C | 1.4°C | 43 mm | 72% | 2.8 m/s | 3.5 |
| 2021 | 22.1°C | 17.2°C | 12.4°C | 27.5°C | 4.4°C | 6 mm | 80% | 2.5 m/s | 3.6 |
| 2020 | 24.1°C | 19.4°C | 14.8°C | 28.7°C | 2.0°C | 28 mm | 75% | 3 m/s | 3.7 |
| 2019 | 23.0°C | 18.1°C | 13.2°C | 29.4°C | 5.0°C | 102 mm | 75% | 3 m/s | 3.5 |
| 2018 | 20.6°C | 16.4°C | 12.3°C | 26.4°C | 0.1°C | 52 mm | 82% | 3.5 m/s | 3.3 |
| 2017 | 24.7°C | 19.8°C | 14.8°C | 29.7°C | 6.0°C | 30 mm | 71% | 3 m/s | 3.6 |
| 2016 🌧️ | 20.9°C | 16.6°C | 12.4°C | 27.7°C | 2.1°C | 219 mm | 80% | 2.9 m/s | 3 |
| 2015 | 23.1°C | 18.5°C | 14.0°C | 28.6°C | 6.6°C | 43 mm | 79% | 2.8 m/s | 3.5 |
| 2014 | 21.8°C | 17.0°C | 12.2°C | 28.5°C | 1.8°C | 124 mm | 76% | 2.9 m/s | 3.2 |
| 2013 | 24.5°C | 20.1°C | 15.7°C | 27.0°C | 7.9°C | 29 mm | 81% | 2.5 m/s | 3.4 |
| 2012 | 22.4°C | 17.4°C | 12.4°C | 26.9°C | 2.1°C | 3 mm | 74% | 2.4 m/s | 3.9 |
| 2011 | 22.7°C | 17.1°C | 11.6°C | 27.0°C | 3.1°C | 70 mm | 73% | 2.8 m/s | 3.4 |
| 2010 | 19.1°C | 13.7°C | 8.3°C | 26.8°C | -1.1°C | 34 mm | 75% | 3.2 m/s | 3.5 |
| 2009 | 21.3°C | 16.2°C | 11.0°C | 27.1°C | 0.3°C | 22 mm | 77% | 2.6 m/s | 3.9 |
| 2008 | 22.9°C | 18.4°C | 13.9°C | 27.3°C | 2.0°C | 42 mm | 77% | 2.9 m/s | 3.3 |
| 2007 | 24.8°C | 20.3°C | 15.8°C | 29.2°C | 6.0°C | 22 mm | 74% | 2.9 m/s | 3.3 |
| 2006 | 22.3°C | 17.6°C | 13.0°C | 26.5°C | 3.2°C | 12 mm | 79% | 2.9 m/s | 3.7 |
| 2005 | 22.5°C | 18.1°C | 13.6°C | 27.0°C | 3.9°C | 38 mm | 80% | 3.1 m/s | 3.5 |
| 2004 | 22.1°C | 17.2°C | 12.3°C | 26.9°C | 5.3°C | 56 mm | 78% | 2.7 m/s | 3.6 |
| 2003 | 18.8°C | 13.4°C | 8.0°C | 24.2°C | -0.2°C | 21 mm | 81% | 2.8 m/s | 3.8 |
| 2002 | 22.4°C | 17.6°C | 12.9°C | 27.3°C | 0.7°C | 52 mm | 83% | 2.3 m/s | 3.5 |
| 2001 | 21.4°C | 15.4°C | 9.4°C | 29.3°C | 1.1°C | 24 mm | 68% | 3 m/s | 3.7 |
| 2000 | 21.7°C | 17.2°C | 12.7°C | 25.9°C | 0.3°C | 53 mm | 80% | 2.8 m/s | 3.6 |
| 1999 | 23.1°C | 18.9°C | 14.7°C | 26.2°C | 2.3°C | 98 mm | 82% | 2.8 m/s | 3.5 |
| 1998 | 21.9°C | 17.9°C | 14.0°C | 26.4°C | 7.5°C | 116 mm | 85% | 3.1 m/s | 3.1 |
| 1997 | 23.3°C | 18.5°C | 13.8°C | 28.1°C | 0.2°C | 71 mm | 75% | 2.6 m/s | 3.6 |
| 1996 | 21.1°C | 16.3°C | 11.5°C | 25.9°C | -0.8°C | 69 mm | 83% | 3 m/s | 3.3 |
| 1995 | 20.0°C | 15.6°C | 11.1°C | 24.7°C | 4.0°C | 65 mm | 84% | 2.9 m/s | 3.2 |
| 1994 | 21.8°C | 18.2°C | 14.5°C | 26.9°C | 5.7°C | 94 mm | 83% | 3.4 m/s | 2.9 |
| 1993 | 23.4°C | 20.3°C | 17.1°C | 26.6°C | 7.4°C | 175 mm | 87% | 2.7 m/s | 3.1 |
| 1992 | 21.1°C | 16.7°C | 12.2°C | 25.9°C | 3.8°C | 90 mm | 82% | 2.8 m/s | 3.3 |
| 1991 | 24.1°C | 20.1°C | 16.1°C | 27.9°C | 7.2°C | 122 mm | 82% | 2.7 m/s | 3.3 |
| 1990 | 24.6°C | 20.0°C | 15.5°C | 27.8°C | 5.7°C | 24 mm | 79% | 2.6 m/s | 3.4 |
| 1989 🔥 | 26.1°C | 21.2°C | 16.3°C | 28.4°C | 8.2°C | 57 mm | 75% | 2.5 m/s | 3.7 |
| 1988 | 20.9°C | 17.0°C | 13.0°C | 25.6°C | 3.0°C | 72 mm | 81% | 3.1 m/s | 2.6 |
| 1987 | 21.2°C | 16.1°C | 11.1°C | 27.4°C | 2.8°C | 60 mm | 81% | 3.1 m/s | 3.4 |
| 1986 | 21.3°C | 16.4°C | 11.6°C | 24.7°C | -3.4°C | 81 mm | 79% | 2.7 m/s | 3.3 |
| 1985 | 20.1°C | 14.5°C | 8.8°C | 26.8°C | -4.8°C | 17 mm | 70% | 3.1 m/s | 3.8 |
| 1984 | 21.4°C | 17.1°C | 12.9°C | 26.6°C | 4.9°C | 20 mm | 84% | 3 m/s | 3.1 |
| 1983 | 20.6°C | 16.0°C | 11.4°C | 26.0°C | 2.8°C | 103 mm | 81% | 2.5 m/s | — |
| 1982 | 23.1°C | 17.9°C | 12.6°C | 28.0°C | -1.3°C | 34 mm | 70% | 2.8 m/s | — |
| 1981 ❄️ | 19.3°C | 13.1°C | 7.0°C | 24.5°C | -1.4°C | 13 mm | 68% | 2.9 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 22.2°C with lows near 12.8°C (mean 17.5°C), based on 45 years of NASA POWER data.
January averages 58 mm of rainfall in Port Saint Lucie, one of the drier months. The wettest on record was 219 mm in 2016.
The hottest January reached 29.7°C in 2017. The coldest dipped to -4.8°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 2.1°C. Daytime highs moved from 20.9°C to 22.6°C and overnight lows from 10.5°C to 13.1°C over the same span.
January is one of the cooler months of the year in Port Saint Lucie and one of the drier months, so plan for around 22.2°C daytime highs and 12.8°C at night.
Yes — January is the coldest month of the year in Port Saint Lucie, averaging 17.5°C.
For January in Port Saint Lucie, pack light layers you can adjust through the day, with typical highs of 22.2°C and lows of 12.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 78% — quite humid.
Average wind speed in January is 2.9 m/s. The windiest January on record averaged 3.5 m/s (2018).
The wettest January on record was 2016 with 219 mm. On average, January sees 58 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 January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
