Hamilton in September
September in Hamilton is peak spring, and the weather reflects it. You're looking at average daily highs of 14.4 degrees.
The average daily maximum is 14.4 degrees with overnight lows of 7.3 degrees. Manageable with a decent layer, and you'll warm up by midday.
September is 4.6 degrees cooler than Hamilton's yearly average.
You're looking at 67mm of rain across 17 days in a typical September. A decent amount, but not relentless.
Solar exposure averages 11.8 MJ/m2 per day in September, with UV levels in the high range. Sun protection is still a good idea, especially around midday.
With a Comfort Score of 2.0/10, September is not the most comfortable time to visit.
Packing tip: bring warm layers including a coat, a rain jacket or compact umbrella, and SPF 50+ sunscreen and a hat.
The full data breakdown is below. You can also see how other Australian cities compare 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
- Winter clothing including a proper coat
- Extra layers for chilly nights
- Proper rain gear for frequent showers
Coming From Overseas?
How September in Hamilton stacks up against major cities around the world.
About 6 degrees cooler and considerably wetter.
About 12 degrees cooler and considerably drier.
About 13 degrees cooler and considerably drier.
How September Compares
Hamilton's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 24.8 | 13.5 | 57mm | 10.0 |
| Feb | 26.9 | 12.4 | 1mm | 9.5 |
| Mar | 24.8 | 12.2 | 10mm | 10.0 |
| Apr | 17.0 | 8.6 | 36mm | 4.6 |
| May | 15.9 | 7.1 | 20mm | 4.0 |
| Jun | 11.9 | 4.5 | 30mm | 1.0 |
| Jul | 11.8 | 4.6 | 74mm | 1.0 |
| Aug | 15.3 | 7.4 | 74mm | 2.7 |
| Sep | 14.4 | 7.3 | 67mm | 2.0 |
| Oct | 18.4 | 8.2 | 70mm | 6.3 |
| Nov | 22.1 | 10.4 | 66mm | 9.1 |
| Dec | 24.7 | 11.8 | 36mm | 10.0 |