Orange in September
September is right in the heart of spring for Orange, and the weather has a definite personality this time of year.
The average daily maximum is 14.5 degrees with overnight lows of 4.8 degrees. You'll see your breath on those cold mornings, but the days warm up nicely.
September is 3.7 degrees cooler than Orange's yearly average.
The rain data says 22mm over 5 days. Nothing dramatic.
Solar exposure averages 19.4 MJ/m2 per day in September, with UV levels in the very high range. You'll want SPF 50+ and a decent hat.
The Comfort Score is 4.0/10 for September. It's fine, but not the highlight of the calendar.
Packing tip: bring warm layers including a coat, and serious sun protection.
Check the data table below for the full picture, or compare Orange in September with another destination.
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
- Warm layers including a heavy jacket or coat
- Extra layers for chilly nights
- Thermal undergarments for cold nights
- A light rain jacket just in case
- Sunscreen (SPF 30+) and sunglasses for UV protection
Coming From Overseas?
How September in Orange stacks up against major cities around the world.
About 6 degrees cooler and considerably drier.
About 12 degrees cooler and considerably drier.
About 12 degrees cooler and considerably drier.
How September Compares
Orange's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 25.5 | 14.4 | 110mm | 9.2 |
| Feb | 25.4 | 14.5 | 50mm | 9.8 |
| Mar | 23.1 | 12.0 | 32mm | 10.0 |
| Apr | 17.0 | 7.4 | 98mm | 4.8 |
| May | 14.0 | 5.7 | 39mm | 2.6 |
| Jun | 9.7 | 2.1 | 70mm | 1.0 |
| Jul | 8.7 | 2.3 | 58mm | 1.0 |
| Aug | 13.1 | 4.4 | 59mm | 1.5 |
| Sep | 14.5 | 4.8 | 22mm | 4.0 |
| Oct | 18.4 | 7.3 | 42mm | 7.0 |
| Nov | 23.0 | 11.9 | 140mm | 9.4 |
| Dec | 25.6 | 13.5 | 48mm | 9.7 |