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The weather in Cooktown in September is hot. The average temperatures are between 21°C and 28°C.
There shouldn't be any rainy days in in Cooktown during September. Having said that, the days are very hot in September so hanging out outside is more recomanded during the after noons and evening time.
Our weather forecast can give you a great sense of what weather to expect in Cooktown in September 2025.
If you’re planning to visit Cooktown in the near future, we highly recommend that you review the 14 day weather forecast for Cooktown before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 31° / 25° | 12 | 19 | 0 | 318 mm | Ok | Cooktown in January |
| February | 31° / 25° | 11 | 17 | 0 | 278 mm | Ok | Cooktown in February |
| March | 30° / 24° | 9 | 22 | 0 | 247 mm | Ok | Cooktown in March |
| April | 29° / 23° | 3 | 27 | 0 | 113 mm | Good | Cooktown in April |
| May | 27° / 22° | 1 | 30 | 0 | 37 mm | Perfect | Cooktown in May |
| June | 26° / 20° | 0 | 30 | 0 | 32 mm | Perfect | Cooktown in June |
| July | 26° / 20° | 0 | 31 | 0 | 23 mm | Perfect | Cooktown in July |
| August | 26° / 19° | 0 | 31 | 0 | 15 mm | Perfect | Cooktown in August |
| September | 28° / 21° | 0 | 30 | 0 | 13 mm | Perfect | Cooktown in September |
| October | 29° / 22° | 1 | 30 | 0 | 28 mm | Good | Cooktown in October |
| November | 30° / 23° | 1 | 29 | 0 | 38 mm | Good | Cooktown in November |
| December | 32° / 24° | 5 | 26 | 0 | 136 mm | Good | Cooktown in December |