Byron Bay in May
May in Byron Bay is peak autumn, and the weather reflects it. You're looking at average daily highs of 21.2 degrees.
Daytime highs average 21.2 degrees, dropping to 14.8 degrees overnight. That's a 6-degree swing between day and night. That's solidly pleasant territory. Great for being outdoors.
At 21.2 degrees, May sits 2.7 degrees below the annual average of 23.9 degrees.
Rainfall in May averages 140mm over about 21 days. That means roughly a 70% chance of rain on any given day, so definitely bring rain gear.
Solar exposure averages 12.1 MJ/m2 per day in May, with UV levels in the high range. Sun protection is still a good idea, especially around midday.
At 5.9/10 on the Comfort Score, May is middle of the road.
For your suitcase: a decent jumper or fleece, waterproof gear, and serious sun protection.
Scroll down for the detailed climate data, or explore what nearby cities are like in May.
May at a Glance
Temperature Range
Daily temperature range in May. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Layered clothing for mild to cool conditions
- Proper rain gear for frequent showers
Coming From Overseas?
How May in Byron Bay stacks up against major cities around the world.
About 3 degrees warmer and considerably wetter.
About 2 degrees cooler and considerably wetter.
About 3 degrees cooler and considerably drier.
How May Compares
Byron Bay's monthly climate at a glance. May is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 27.4 | 22.4 | 203mm | 5.7 |
| Feb | 27.7 | 21.9 | 201mm | 6.1 |
| Mar | 26.0 | 20.9 | 162mm | 7.1 |
| Apr | 24.1 | 17.2 | 286mm | 7.6 |
| May | 21.2 | 14.8 | 140mm | 5.9 |
| Jun | 19.8 | 11.4 | 21mm | 7.1 |
| Jul | 19.2 | 11.7 | 66mm | 6.2 |
| Aug | 22.2 | 14.4 | 117mm | 7.8 |
| Sep | 23.3 | 14.4 | 160mm | 9.0 |
| Oct | 23.5 | 16.2 | 88mm | 9.6 |
| Nov | 25.7 | 20.1 | 266mm | 7.1 |
| Dec | 27.2 | 21.4 | 136mm | 7.2 |