September scores 83/100 for outdoor ceremonies: very low rain risk (3 wet days, 38mm), 21°C afternoons cooling to about 16°C for the reception, and 11.8 hours of daylight for the photography schedule. February is the month to avoid at 35/100.
September outdoor ceremony score: 83/100
Climate normals for Byron Bay rescored on wedding-specific weighting. Once your date falls inside the 14-day window the live forecast on this page takes over.
Last updated: · Live forecast data refreshes hourly.
| Best wedding month | September — 83/100 |
| Second choice | August — 81/100 |
| Month to avoid | February — 35/100 |
| Rain risk in the best month | Very low — rain on about 3 days |
| Guest comfort | 97/100 at 21°C |
| Reception temperature | ≈ 16°C after sunset in September |
| Photo light | 8h of sun across a 11.8h day |
| Months scoring 65+ | 5 of 12 |
September keeps seated guests at 21°C in the afternoon and around 16°C after sunset — the closest Byron Bay gets to a ceremony that needs neither shade structures nor patio heaters.
Rain falls on roughly 3 days in September (very low risk, 38mm). A simple marquee-on-standby is usually enough.
September gives 11.8 hours of daylight and about 8 hours of direct sun per day, so a late-afternoon ceremony puts portraits inside golden hour rather than after it.
February scores 35/100 for weddings in Byron Bay: 28°C highs, 185mm of rain and 23°C evenings make a fully outdoor plan fragile.
Scored on rain risk, guest comfort, evening temperature and photographic light — deliberately different weighting from the travel score.
| Month | Wedding score | Rain risk | Afternoon | Evening | Guest comfort | Photo light |
|---|---|---|---|---|---|---|
| January | 38/100 | High (15 days) | 28°C | 23°C | 72/100 | 26/100 |
| February | 35/100 | High (16 days) | 28°C | 23°C | 71/100 | 8/100 |
| March | 39/100 | High (14 days) | 27°C | 22°C | 79/100 | 12/100 |
| April | 52/100 | Moderate (10 days) | 25°C | 20°C | 87/100 | 18/100 |
| May | 62/100 | Moderate (9 days) | 23°C | 18°C | 96/100 | 33/100 |
| June | 62/100 | Moderate (8 days) | 21°C | 16°C | 97/100 | 28/100 |
| July | 74/100 | Low (4 days) | 20°C | 15°C | 93/100 | 43/100 |
| August | 81/100 | Very low (3 days) | 20°C | 15°C | 93/100 | 68/100 |
| September | 83/100 | Very low (3 days) | 21°C | 16°C | 97/100 | 70/100 |
| October | 79/100 | Low (5 days) | 23°C | 18°C | 96/100 | 71/100 |
| November | 65/100 | Low (7 days) | 25°C | 20°C | 87/100 | 46/100 |
| December | 51/100 | Moderate (10 days) | 27°C | 22°C | 79/100 | 44/100 |
Wedding weather is scored differently from travel weather: seated guests in formalwear tolerate a narrower band than sightseers, and the ceremony hour matters more than the daily average. Each month in Byron Bay is scored 0–100 on the weighting below.
| Factor | Weight | What it measures |
|---|---|---|
| Dry conditions | 38% | Share of days with measurable rain — the single factor most likely to force a backup plan. |
| Guest comfort | 27% | Distance from a 22°C daytime ideal, with an extra penalty for humid heat above 24°C. |
| Evening temperature | 20% | Modelled reception-hour temperature against an 18°C ideal for an outdoor evening. |
| Photo light | 15% | Sunshine hours and daylight length, which set the length and quality of the golden hour window. |
Based on long-run climate averages rather than a forecast. Plan the ceremony around the golden hour — see golden hour times for Byron Bay linked below.
September, at 83/100. It combines very low rain risk with 21°C afternoons and roughly 16°C evenings, which is the most forgiving combination Byron Bay offers for seated guests.
February scores 35/100: 28°C highs, 185mm of rain over about 16 days and 23°C evenings make a fully outdoor plan fragile.
In September rain falls on roughly 3 of 30 days, so the single-day probability is about 10%. In February that rises to about 53%.
A marquee on standby is usually enough in September, where rain risk is very low. Outside the 5 months scoring 65 or higher, book real covered space.
September gives 11.8 hours of daylight and about 8 hours of direct sun. Put portraits in the final 60–90 minutes of daylight so they land inside golden hour rather than after it.