March is one of the warmer months of the year in Southport, with average highs near 27.3°C and lows around 19.6°C (mean 23.5°C). It is a relatively wet time of year, averaging 154 mm of rainfall and 76% relative humidity across the period.
March is one of the warmer months of the year in Southport. Across 45 years of records, the warmest March in Southport was 1998 — when the month averaged 25.8°C — while the coldest was 1994 at 21.2°C. Typical March days reach 27.3°C with nights near 19.6°C. The long-term trend is warming, about 0.3°C per decade.
March is a relatively wet time of year in Southport, averaging 154 mm of rainfall. The wettest March on record was 2025 with 413 mm, while the driest was 2005 at 42 mm.
Relative humidity in Southport during March averages 76%. The most humid March was 2022 at 84%, and the least humid was 2005 at 63%.
March receives about 5.2 kWh/m²/day of solar energy in Southport. The sunniest March was 1998 at 5.9 kWh/m²/day, and the cloudiest was 2025 at 4.3.
Average wind speed in Southport during March is 3.3 m/s. The windiest Marchs were 1993 and 2025 at 4.1 m/s, while the calmest were 1999, 2015 and 2023, among others at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.0°C | 23.1°C | 23.5°C | 23.9°C | 23.8°C | +0.8°C |
| Avg High | 27.0°C | 27.1°C | 27.5°C | 27.6°C | 27.3°C | +0.3°C |
| Avg Low | 19.2°C | 19.2°C | 19.5°C | 20.3°C | 20.3°C | +1.1°C |
| Avg Rain | 155 mm | 136 mm | 124 mm | 172 mm | 199 mm | +44 mm |
March temperatures in Southport have risen by about 0.8°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 11.7°C (1994) to a record high of 37.3°C (2019).
Rainfall in March is a relatively wet time of year, averaging 154 mm, with a wettest year of 413 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Southport
March is a good time to visit Southport, with days averaging 27.3°C and nights around 19.6°C (mean 23.5°C, warmer than Southport's yearly average) and higher rainfall. October and November are marginally more temperate, but March still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🌧️ | 26.7°C | 23.9°C | 21.1°C | 30.0°C | 18.4°C | 413 mm | 83% | 4.1 m/s | 4.3 |
| 2024 | 28.0°C | 24.3°C | 20.7°C | 33.8°C | 17.9°C | 117 mm | 74% | 3.6 m/s | 4.7 |
| 2023 | 30.1°C | 25.7°C | 21.3°C | 35.8°C | 15.0°C | 83 mm | 72% | 2.7 m/s | 5.3 |
| 2022 | 26.1°C | 22.7°C | 19.3°C | 30.3°C | 16.5°C | 208 mm | 84% | 3 m/s | 5.1 |
| 2021 | 26.5°C | 23.2°C | 19.9°C | 32.9°C | 15.8°C | 251 mm | 80% | 3 m/s | 4.5 |
| 2020 | 26.3°C | 22.8°C | 19.4°C | 31.1°C | 16.1°C | 121 mm | 79% | 3.4 m/s | 5.1 |
| 2019 | 29.8°C | 25.5°C | 21.3°C | 37.3°C | 12.6°C | 172 mm | 73% | 3.1 m/s | 5.2 |
| 2018 | 27.6°C | 24.0°C | 20.4°C | 33.2°C | 16.9°C | 111 mm | 78% | 3.6 m/s | 5 |
| 2017 | 28.7°C | 25.0°C | 21.3°C | 31.5°C | 17.5°C | 374 mm | 77% | 3.1 m/s | 5 |
| 2016 | 28.7°C | 24.7°C | 20.8°C | 31.8°C | 17.4°C | 127 mm | 74% | 3.1 m/s | 5.5 |
| 2015 | 28.2°C | 24.2°C | 20.3°C | 34.4°C | 16.0°C | 85 mm | 77% | 2.7 m/s | 5.5 |
| 2014 | 28.2°C | 24.3°C | 20.5°C | 34.8°C | 18.6°C | 207 mm | 69% | 3.2 m/s | 5.2 |
| 2013 | 25.5°C | 22.3°C | 19.2°C | 29.6°C | 15.7°C | 200 mm | 82% | 3.4 m/s | 4.9 |
| 2012 | 25.7°C | 22.4°C | 19.0°C | 29.4°C | 16.7°C | 130 mm | 80% | 3.4 m/s | 5 |
| 2011 | 27.0°C | 23.5°C | 20.0°C | 32.5°C | 16.1°C | 152 mm | 77% | 3 m/s | 4.8 |
| 2010 | 26.2°C | 23.1°C | 19.9°C | 29.4°C | 17.6°C | 167 mm | 79% | 3.4 m/s | 4.7 |
| 2009 | 27.8°C | 23.8°C | 19.8°C | 34.6°C | 16.5°C | 109 mm | 73% | 3.5 m/s | 5.3 |
| 2008 | 25.9°C | 21.9°C | 18.0°C | 30.4°C | 12.8°C | 67 mm | 75% | 3.3 m/s | 5.2 |
| 2007 | 29.2°C | 24.8°C | 20.3°C | 35.0°C | 17.0°C | 80 mm | 71% | 3.3 m/s | 5.8 |
| 2006 | 26.5°C | 23.1°C | 19.6°C | 31.6°C | 15.7°C | 191 mm | 77% | 3.6 m/s | 4.7 |
| 2005 | 28.4°C | 23.7°C | 18.9°C | 33.5°C | 14.3°C | 42 mm | 63% | 3.2 m/s | 5.8 |
| 2004 | 26.9°C | 23.4°C | 19.9°C | 31.0°C | 16.6°C | 191 mm | 78% | 3.6 m/s | 5.3 |
| 2003 | 25.6°C | 22.1°C | 18.6°C | 31.8°C | 15.2°C | 142 mm | 80% | 2.8 m/s | 5.4 |
| 2002 | 29.0°C | 24.4°C | 19.8°C | 35.6°C | 15.0°C | 120 mm | 68% | 3.8 m/s | 5.7 |
| 2001 | 27.5°C | 23.8°C | 20.2°C | 31.1°C | 15.1°C | 214 mm | 79% | 3.7 m/s | 5.2 |
| 2000 | 27.7°C | 24.0°C | 20.2°C | 31.5°C | 18.4°C | 87 mm | 76% | 2.8 m/s | 5.2 |
| 1999 | 26.8°C | 23.4°C | 19.9°C | 31.1°C | 18.0°C | 188 mm | 81% | 2.7 m/s | 5.1 |
| 1998 🔥 | 30.8°C | 25.8°C | 20.8°C | 35.4°C | 17.5°C | 44 mm | 66% | 3.3 m/s | 5.9 |
| 1997 | 28.1°C | 23.9°C | 19.7°C | 33.5°C | 17.6°C | 49 mm | 70% | 3.2 m/s | 5.5 |
| 1996 | 26.8°C | 22.9°C | 18.9°C | 32.4°C | 17.5°C | 70 mm | 73% | 3.8 m/s | 5.4 |
| 1995 | 27.5°C | 23.0°C | 18.6°C | 31.8°C | 13.7°C | 99 mm | 76% | 3.2 m/s | 5.6 |
| 1994 ❄️ | 24.3°C | 21.2°C | 18.1°C | 27.5°C | 11.7°C | 271 mm | 81% | 3.7 m/s | 4.8 |
| 1993 | 27.3°C | 23.1°C | 18.9°C | 33.9°C | 15.3°C | 126 mm | 70% | 4.1 m/s | 5.3 |
| 1992 | 25.6°C | 22.4°C | 19.1°C | 29.5°C | 15.4°C | 219 mm | 80% | 3.6 m/s | 5 |
| 1991 | 28.1°C | 23.6°C | 19.0°C | 33.9°C | 16.9°C | 73 mm | 69% | 3.2 m/s | 5.6 |
| 1990 | 25.3°C | 22.0°C | 18.8°C | 28.7°C | 12.7°C | 219 mm | 81% | 3.9 m/s | 4.8 |
| 1989 | 26.0°C | 22.9°C | 19.7°C | 33.9°C | 17.7°C | 174 mm | 82% | 3.4 m/s | 4.7 |
| 1988 | 26.0°C | 22.1°C | 18.1°C | 33.1°C | 14.8°C | 226 mm | 74% | 3.6 m/s | 4.8 |
| 1987 | 26.7°C | 22.6°C | 18.6°C | 34.8°C | 12.4°C | 293 mm | 76% | 3.1 m/s | 5.6 |
| 1986 | 28.4°C | 23.6°C | 18.8°C | 32.1°C | 15.1°C | 57 mm | 67% | 3.2 m/s | 5.8 |
| 1985 | 25.9°C | 22.4°C | 19.0°C | 32.7°C | 16.2°C | 212 mm | 78% | 3.5 m/s | 4.9 |
| 1984 | 27.2°C | 22.9°C | 18.6°C | 32.2°C | 12.5°C | 81 mm | 73% | 2.7 m/s | 5.3 |
| 1983 | 28.0°C | 24.1°C | 20.2°C | 33.5°C | 17.5°C | 122 mm | 73% | 3 m/s | — |
| 1982 | 26.6°C | 23.5°C | 20.5°C | 29.9°C | 18.7°C | 177 mm | 81% | 3 m/s | — |
| 1981 | 27.8°C | 23.3°C | 18.9°C | 33.9°C | 15.9°C | 49 mm | 73% | 3 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 27.3°C with lows near 19.6°C (mean 23.5°C), based on 45 years of NASA POWER data.
March averages 154 mm of rainfall in Southport, a relatively wet time of year. The wettest on record was 413 mm in 2025.
The hottest March reached 37.3°C in 2019. The coldest dipped to 11.7°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 0.8°C. Daytime highs moved from 27.1°C to 27.5°C and overnight lows from 19.4°C to 20.5°C over the same span.
March is one of the warmer months of the year in Southport and a relatively wet time of year, so plan for around 27.3°C daytime highs and 19.6°C at night.
Not quite — March is the 9th coolest month in Southport, averaging 23.5°C.
For March in Southport, pack light layers you can adjust through the day, with typical highs of 27.3°C and lows of 19.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 76% — quite humid.
Average wind speed in March is 3.3 m/s. The windiest March on record averaged 4.1 m/s (1993).
The wettest March on record was 2025 with 413 mm. On average, March sees 154 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 Southport 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.
