Click on a day for an hourly weather forecast
The weather in Rosenberg in September is very hot. The average temperatures are between 23°C and 31°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Rosenberg. 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 Rosenberg in September 2025.
If you’re planning to visit Rosenberg in the near future, we highly recommend that you review the 14 day weather forecast for Rosenberg before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 17° / 8° | 6 | 25 | 0 | 88 mm | Good | Rosenberg in January |
| February | 19° / 10° | 6 | 22 | 0 | 62 mm | Good | Rosenberg in February |
| March | 23° / 13° | 6 | 25 | 0 | 79 mm | Perfect | Rosenberg in March |
| April | 26° / 16° | 6 | 24 | 0 | 101 mm | Perfect | Rosenberg in April |
| May | 30° / 20° | 9 | 22 | 0 | 119 mm | Ok | Rosenberg in May |
| June | 33° / 23° | 10 | 20 | 0 | 106 mm | Ok | Rosenberg in June |
| July | 34° / 24° | 13 | 18 | 0 | 102 mm | Bad | Rosenberg in July |
| August | 34° / 25° | 13 | 18 | 0 | 115 mm | Bad | Rosenberg in August |
| September | 31° / 23° | 12 | 18 | 0 | 138 mm | Ok | Rosenberg in September |
| October | 28° / 18° | 7 | 24 | 0 | 91 mm | Good | Rosenberg in October |
| November | 22° / 13° | 5 | 25 | 0 | 84 mm | Good | Rosenberg in November |
| December | 18° / 10° | 6 | 25 | 0 | 92 mm | Good | Rosenberg in December |