Click on a day for an hourly weather forecast
The weather in Port Arthur in August is very hot. The average temperatures are between 26°C and 33°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of August in Port Arthur. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Port Arthur in August 2025.
If you’re planning to visit Port Arthur in the near future, we highly recommend that you review the 14 day weather forecast for Port Arthur before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 15° / 9° | 4 | 26 | 1 | 62 mm | Good | Port Arthur in January |
| February | 17° / 11° | 5 | 23 | 0 | 52 mm | Good | Port Arthur in February |
| March | 21° / 14° | 4 | 27 | 0 | 49 mm | Good | Port Arthur in March |
| April | 25° / 17° | 3 | 27 | 0 | 52 mm | Perfect | Port Arthur in April |
| May | 29° / 22° | 5 | 26 | 0 | 68 mm | Good | Port Arthur in May |
| June | 32° / 25° | 8 | 22 | 0 | 108 mm | Ok | Port Arthur in June |
| July | 33° / 26° | 9 | 22 | 0 | 121 mm | Ok | Port Arthur in July |
| August | 33° / 26° | 11 | 21 | 0 | 157 mm | Ok | Port Arthur in August |
| September | 31° / 23° | 8 | 22 | 0 | 131 mm | Ok | Port Arthur in September |
| October | 27° / 19° | 4 | 27 | 0 | 78 mm | Perfect | Port Arthur in October |
| November | 21° / 14° | 3 | 27 | 0 | 56 mm | Good | Port Arthur in November |
| December | 17° / 11° | 5 | 26 | 0 | 69 mm | Good | Port Arthur in December |