Byron Bay records about 1340mm of rain across roughly 105 wet days a year, which is a 29% chance on an average day. February is the wettest month at 185mm (14% of the annual total) and August the driest at 38mm. Local rain type: thunderstorms. Byron Bay has a subtropical climate — summer brings warm tropical showers while winter is dry and mild. Post-storm surfing draws wave riders.
Chance of rain on an average day: 29%
Rainfall climatology for Byron Bay. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 1340mm |
| Rain days per year | 105 |
| Odds on an average day | 29% |
| Wettest month | February — 185mm over 16 days |
| Driest month | August — 38mm over 3 days |
| Rain type | thunderstorms |
| Best dry window | June through September offers dry, mild winter conditions. |
| Worst rain window | January through March brings tropical storms and the heaviest rainfall. |
February delivers 387% more rain than August (185mm vs 38mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 14% of the annual total, so rain in Byron Bay is spread through the year — there is no season you can rely on being dry.
Byron Bay rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 16 days in February against 3 in August — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 175mm | 15 | 50% | 28°C |
| February | 185mm | 16 | 53% | 28°C |
| March | 160mm | 14 | 47% | 27°C |
| April | 118mm | 10 | 33% | 25°C |
| May | 98mm | 9 | 30% | 23°C |
| June | 95mm | 8 | 27% | 21°C |
| July | 42mm | 4 | 13% | 20°C |
| August | 38mm | 3 | 10% | 20°C |
| September | 38mm | 3 | 10% | 21°C |
| October | 52mm | 5 | 17% | 23°C |
| November | 82mm | 7 | 23% | 25°C |
| December | 112mm | 10 | 33% | 27°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Byron Bay we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Byron Bay records rain on roughly 105 days a year — about a 29% chance on any given day — totalling around 1340mm.
February, with about 185mm over 16 rain days. That is 14% of the entire year's rainfall in a single month.
August is the driest month at 38mm across roughly 3 days. June through September offers dry, mild winter conditions.
Byron Bay has a subtropical climate — summer brings warm tropical showers while winter is dry and mild. Post-storm surfing draws wave riders.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.