Hay in September
September is right in the heart of spring for Hay, and the weather has a definite personality this time of year.
Daytime highs average 20.2 degrees, dropping to 8.4 degrees overnight. That's a 12-degree swing between day and night. Comfortable during the day, with evenings that invite a light layer.
September is 3.7 degrees cooler than Hay's yearly average.
The rain data says 21mm over 3 days. Nothing dramatic.
Sunshine-wise, September delivers around 18.4 MJ/m2 of daily solar radiation. UV sits in the very high category. You'll want SPF 50+ and a decent hat.
Our Comfort Score rates September at 8.1/10. That's about as good as it gets.
Packing tip: bring layers you can peel on and off, and SPF 50+ sunscreen and a hat.
Scroll down for the detailed climate data, or explore what nearby cities are like in September.
September at a Glance
Temperature Range
Daily temperature range in September. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Layered clothing for mild to cool conditions
- Extra layers for chilly nights
- Sunscreen (SPF 30+) and sunglasses for UV protection
Coming From Overseas?
How September in Hay stacks up against major cities around the world.
About 0 degrees warmer and considerably drier.
About 6 degrees cooler and considerably drier.
About 7 degrees cooler and considerably drier.
How September Compares
Hay's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 30.6 | 19.1 | 97mm | 5.8 |
| Feb | 33.0 | 18.7 | 7mm | 5.1 |
| Mar | 30.6 | 17.4 | 44mm | 6.3 |
| Apr | 21.5 | 10.5 | 34mm | 8.6 |
| May | 18.0 | 8.0 | 101mm | 5.1 |
| Jun | 13.8 | 5.0 | 16mm | 2.4 |
| Jul | 14.1 | 5.5 | 22mm | 2.6 |
| Aug | 18.2 | 7.7 | 17mm | 6.0 |
| Sep | 20.2 | 8.4 | 21mm | 8.1 |
| Oct | 24.9 | 12.0 | 33mm | 10.0 |
| Nov | 29.5 | 16.0 | 30mm | 7.2 |
| Dec | 32.0 | 17.9 | 17mm | 5.6 |