Port Arthur in September
September is right in the heart of spring for Port Arthur, and the weather has a definite personality this time of year.
The average daily maximum is 14.1 degrees with overnight lows of 7.4 degrees. Manageable with a decent layer, and you'll warm up by midday.
September is 2.4 degrees cooler than Port Arthur's yearly average.
You're looking at 54mm of rain across 11 days in a typical September. Light enough that it won't ruin your plans.
Sunshine-wise, September delivers around 12.6 MJ/m2 of daily solar radiation. UV sits in the high category. Sun protection is still a good idea, especially around midday.
With a Comfort Score of 2.6/10, September is not the most comfortable time to visit.
Packing tip: bring warm layers including a coat, and serious sun protection.
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
- Warm layers including a heavy jacket or coat
- Extra layers for chilly nights
- Proper rain gear for frequent showers
Coming From Overseas?
How September in Port Arthur 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
Port Arthur's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 20.7 | 13.0 | 99mm | 7.8 |
| Feb | 21.5 | 13.2 | 23mm | 9.0 |
| Mar | 19.6 | 12.1 | 29mm | 6.9 |
| Apr | 16.4 | 10.4 | 77mm | 3.8 |
| May | 14.1 | 9.2 | 36mm | 1.9 |
| Jun | 11.7 | 7.7 | 37mm | 1.0 |
| Jul | 11.7 | 6.7 | 72mm | 1.0 |
| Aug | 14.1 | 8.1 | 89mm | 1.5 |
| Sep | 14.1 | 7.4 | 54mm | 2.6 |
| Oct | 15.8 | 8.4 | 73mm | 4.1 |
| Nov | 18.2 | 10.4 | 64mm | 6.3 |
| Dec | 20.1 | 11.9 | 122mm | 7.1 |