Click on a day for an hourly weather forecast
The weather in Medan in September is very hot. The average temperatures are between 23°C and 33°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Medan. 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 Medan in September 2025.
If you’re planning to visit Medan in the near future, we highly recommend that you review the 14 day weather forecast for Medan before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 31° / 22° | 10 | 21 | 0 | 209 mm | Ok | Medan in January |
| February | 32° / 22° | 6 | 22 | 0 | 158 mm | Good | Medan in February |
| March | 33° / 23° | 9 | 22 | 0 | 190 mm | Ok | Medan in March |
| April | 33° / 24° | 12 | 18 | 0 | 242 mm | Ok | Medan in April |
| May | 34° / 24° | 13 | 18 | 0 | 254 mm | Bad | Medan in May |
| June | 34° / 24° | 11 | 19 | 0 | 184 mm | Bad | Medan in June |
| July | 34° / 23° | 9 | 22 | 0 | 168 mm | Bad | Medan in July |
| August | 34° / 23° | 11 | 20 | 0 | 209 mm | Bad | Medan in August |
| September | 33° / 23° | 13 | 17 | 0 | 229 mm | Ok | Medan in September |
| October | 33° / 23° | 14 | 17 | 0 | 308 mm | Ok | Medan in October |
| November | 32° / 23° | 15 | 15 | 0 | 317 mm | Ok | Medan in November |
| December | 31° / 23° | 13 | 18 | 0 | 285 mm | Ok | Medan in December |