Click on a day for an hourly weather forecast
The weather in Port Arthur in May is hot. The average temperatures are between 22°C and 29°C.
You can expect about 3 to 8 days of rain in Port Arthur during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Port Arthur in May 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 |