March is one of the warmer months of the year in Byron Bay, with average highs near 25.1°C and lows around 23°C (mean 24.1°C). It is a relatively wet time of year, averaging 168 mm of rainfall and 77% relative humidity across the period.
March is one of the warmer months of the year in Byron Bay. Across 45 years of records, the warmest Marchs in Byron Bay were 1998 and 2023 — when the month averaged 25.3°C — while the coldest was 2008 at 22.7°C. Typical March days reach 25.1°C with nights near 23°C. The long-term trend is warming, about 0.3°C per decade.
March is a relatively wet time of year in Byron Bay, averaging 168 mm of rainfall. The wettest March on record was 2017 with 507 mm, while the driest was 1998 at 48 mm.
Relative humidity in Byron Bay during March averages 77%. The most humid March was 1989 at 82%, and the least humid was 2005 at 71%.
March receives about 5 kWh/m²/day of solar energy in Byron Bay. The sunniest March was 1998 at 5.9 kWh/m²/day, and the cloudiest was 2025 at 4.1.
Average wind speed in Byron Bay during March is 5.4 m/s. The windiest March was 2025 at 6.6 m/s, while the calmest was 2000 at 4.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.5°C | 23.8°C | 24.0°C | 24.5°C | 24.6°C | +1.1°C |
| Avg High | 24.6°C | 24.9°C | 25.1°C | 25.5°C | 25.6°C | +1°C |
| Avg Low | 22.5°C | 22.7°C | 23.0°C | 23.5°C | 23.6°C | +1.1°C |
| Avg Rain | 157 mm | 159 mm | 143 mm | 188 mm | 210 mm | +53 mm |
March temperatures in Byron Bay have risen by about 0.8°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 18.8°C (1984) to a record high of 30.9°C (2015).
Rainfall in March is a relatively wet time of year, averaging 168 mm, with a wettest year of 507 mm.
A quieter season to visit Byron Bay
If your dates are flexible, the more temperate months of November and October tend to be the most comfortable for visiting Byron Bay. That said, March — with days averaging 25.1°C and nights around 23°C (mean 24.1°C) and higher rainfall (168 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 25.6°C | 24.7°C | 23.9°C | 27.6°C | 22.5°C | 425 mm | 81% | 6.6 m/s | 4.1 |
| 2024 | 25.8°C | 24.9°C | 24.0°C | 28.8°C | 22.5°C | 121 mm | 75% | 5.4 m/s | 4.6 |
| 2023 | 26.3°C | 25.3°C | 24.2°C | 29.2°C | 21.7°C | 113 mm | 78% | 4.5 m/s | 5.1 |
| 2022 | 25.1°C | 24.1°C | 23.1°C | 28.6°C | 21.6°C | 220 mm | 81% | 5.4 m/s | 4.7 |
| 2021 | 25.2°C | 24.1°C | 23.1°C | 28.1°C | 21.7°C | 248 mm | 79% | 5.3 m/s | 4.4 |
| 2020 | 25.5°C | 24.4°C | 23.4°C | 29.1°C | 21.7°C | 131 mm | 75% | 5.7 m/s | 4.9 |
| 2019 | 26.3°C | 25.1°C | 24.0°C | 29.4°C | 19.7°C | 160 mm | 79% | 5.2 m/s | 4.9 |
| 2018 | 25.6°C | 24.6°C | 23.6°C | 29.2°C | 22.6°C | 128 mm | 79% | 5.7 m/s | 4.9 |
| 2017 🌧️ | 25.8°C | 24.9°C | 23.9°C | 27.5°C | 21.7°C | 507 mm | 80% | 5.5 m/s | 4.7 |
| 2016 | 25.5°C | 24.5°C | 23.6°C | 26.5°C | 22.1°C | 160 mm | 78% | 4.9 m/s | 5.1 |
| 2015 | 26.0°C | 24.8°C | 23.7°C | 30.9°C | 21.5°C | 77 mm | 77% | 4.7 m/s | 5.4 |
| 2014 | 25.2°C | 24.2°C | 23.2°C | 27.9°C | 22.3°C | 189 mm | 75% | 4.8 m/s | 5.1 |
| 2013 | 24.8°C | 23.9°C | 22.9°C | 27.9°C | 22.0°C | 205 mm | 77% | 5.9 m/s | 4.6 |
| 2012 | 24.8°C | 23.8°C | 22.9°C | 27.6°C | 21.5°C | 137 mm | 77% | 5.7 m/s | 4.7 |
| 2011 | 25.7°C | 24.6°C | 23.6°C | 28.9°C | 22.4°C | 141 mm | 75% | 4.9 m/s | 4.7 |
| 2010 | 25.3°C | 24.4°C | 23.5°C | 27.4°C | 22.5°C | 172 mm | 77% | 5.5 m/s | 4.8 |
| 2009 | 25.3°C | 24.3°C | 23.3°C | 29.8°C | 20.7°C | 174 mm | 76% | 5.5 m/s | 5.2 |
| 2008 ❄️ | 23.7°C | 22.7°C | 21.7°C | 25.8°C | 19.5°C | 63 mm | 76% | 5.2 m/s | 5.3 |
| 2007 | 25.6°C | 24.5°C | 23.4°C | 27.6°C | 22.1°C | 87 mm | 76% | 5.3 m/s | 5.5 |
| 2006 | 25.0°C | 24.1°C | 23.1°C | 28.4°C | 20.7°C | 221 mm | 76% | 5.6 m/s | 4.7 |
| 2005 | 24.9°C | 23.7°C | 22.4°C | 27.8°C | 20.2°C | 55 mm | 71% | 5.4 m/s | 5.4 |
| 2004 | 25.5°C | 24.5°C | 23.4°C | 28.5°C | 22.0°C | 233 mm | 76% | 5.8 m/s | 4.9 |
| 2003 | 24.5°C | 23.5°C | 22.4°C | 27.2°C | 20.6°C | 155 mm | 77% | 4.9 m/s | 5.1 |
| 2002 | 25.8°C | 24.6°C | 23.4°C | 29.2°C | 20.5°C | 112 mm | 74% | 6.2 m/s | 5.2 |
| 2001 | 25.5°C | 24.6°C | 23.6°C | 27.9°C | 21.9°C | 258 mm | 79% | 6.4 m/s | 4.8 |
| 2000 | 24.7°C | 23.9°C | 23.0°C | 26.4°C | 21.9°C | 76 mm | 79% | 4.4 m/s | 4.9 |
| 1999 | 25.5°C | 24.5°C | 23.4°C | 28.6°C | 21.9°C | 215 mm | 79% | 4.7 m/s | 4.9 |
| 1998 🔥 | 26.5°C | 25.3°C | 24.1°C | 29.5°C | 22.2°C | 48 mm | 74% | 5.5 m/s | 5.9 |
| 1997 | 25.3°C | 24.2°C | 23.1°C | 27.7°C | 21.9°C | 56 mm | 73% | 4.9 m/s | 5.4 |
| 1996 | 24.4°C | 23.4°C | 22.4°C | 27.7°C | 21.7°C | 91 mm | 75% | 6 m/s | 5.2 |
| 1995 | 25.2°C | 23.8°C | 22.4°C | 27.5°C | 19.8°C | 182 mm | 76% | 5.9 m/s | 5.4 |
| 1994 | 23.7°C | 22.8°C | 22.0°C | 25.6°C | 19.0°C | 300 mm | 77% | 6.1 m/s | 4.4 |
| 1993 | 24.5°C | 23.4°C | 22.4°C | 27.9°C | 20.5°C | 155 mm | 75% | 6.4 m/s | 5 |
| 1992 | 24.3°C | 23.4°C | 22.5°C | 27.8°C | 21.4°C | 271 mm | 79% | 5.8 m/s | 4.8 |
| 1991 | 25.0°C | 23.8°C | 22.6°C | 28.7°C | 21.6°C | 67 mm | 74% | 5.2 m/s | 5.3 |
| 1990 | 24.3°C | 23.3°C | 22.3°C | 26.1°C | 19.0°C | 201 mm | 79% | 6.4 m/s | 4.5 |
| 1989 | 24.2°C | 23.3°C | 22.4°C | 27.3°C | 21.1°C | 189 mm | 82% | 5.6 m/s | 4.5 |
| 1988 | 24.0°C | 22.9°C | 21.8°C | 28.3°C | 20.3°C | 272 mm | 75% | 5.8 m/s | 4.6 |
| 1987 | 24.9°C | 23.7°C | 22.4°C | 28.9°C | 19.5°C | 258 mm | 75% | 5.5 m/s | 5.2 |
| 1986 | 24.4°C | 23.2°C | 21.9°C | 26.5°C | 19.4°C | 60 mm | 74% | 4.8 m/s | 5.5 |
| 1985 | 24.2°C | 23.2°C | 22.3°C | 27.6°C | 21.2°C | 238 mm | 77% | 5.5 m/s | 4.6 |
| 1984 | 24.4°C | 23.2°C | 22.0°C | 27.4°C | 18.8°C | 82 mm | 76% | 4.7 m/s | 5.1 |
| 1983 | 25.1°C | 24.0°C | 22.9°C | 28.3°C | 21.2°C | 141 mm | 77% | 4.7 m/s | — |
| 1982 | 25.4°C | 24.5°C | 23.6°C | 27.4°C | 22.1°C | 124 mm | 79% | 5 m/s | — |
| 1981 | 25.1°C | 23.9°C | 22.8°C | 28.0°C | 21.7°C | 49 mm | 74% | 4.9 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 25.1°C with lows near 23°C (mean 24.1°C), based on 45 years of NASA POWER data.
March averages 168 mm of rainfall in Byron Bay, a relatively wet time of year. The wettest on record was 507 mm in 2017.
The hottest March reached 30.9°C in 2015. The coldest dipped to 18.8°C in 1984.
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 24.8°C to 25.6°C and overnight lows from 22.7°C to 23.7°C over the same span.
March is one of the warmer months of the year in Byron Bay and a relatively wet time of year, so plan for around 25.1°C daytime highs and 23°C at night.
Not quite — March is the 10th coolest month in Byron Bay, averaging 24.1°C.
For March in Byron Bay, pack light layers you can adjust through the day, with typical highs of 25.1°C and lows of 23°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 77% — quite humid.
Average wind speed in March is 5.4 m/s. The windiest March on record averaged 6.6 m/s (2025).
The wettest March on record was 2017 with 507 mm. On average, March sees 168 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 Byron Bay 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.
