Click on a day for an hourly weather forecast
The weather in Monrovia in September is very hot. The average temperatures are between 25°C and 27°C, drinking water regularly is advisable.
With more than 22 rainy days, Monrovia is an incredibly wet during September. Be sure to pack your umbrella and bring along your rubber boots to stay dry. It’s going to be raining cats and dogs this month!
Our weather forecast can give you a great sense of what weather to expect in Monrovia in September 2025.
If you’re planning to visit Monrovia in the near future, we highly recommend that you review the 14 day weather forecast for Monrovia before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 30° / 26° | 5 | 26 | 0 | 80 mm | Good | Monrovia in January |
| February | 30° / 26° | 6 | 22 | 0 | 94 mm | Good | Monrovia in February |
| March | 30° / 26° | 10 | 21 | 0 | 139 mm | Ok | Monrovia in March |
| April | 30° / 26° | 11 | 19 | 0 | 154 mm | Ok | Monrovia in April |
| May | 29° / 26° | 16 | 15 | 0 | 328 mm | Ok | Monrovia in May |
| June | 28° / 25° | 21 | 9 | 0 | 635 mm | Good | Monrovia in June |
| July | 27° / 24° | 18 | 13 | 0 | 515 mm | Good | Monrovia in July |
| August | 26° / 24° | 18 | 13 | 0 | 600 mm | Good | Monrovia in August |
| September | 27° / 25° | 23 | 7 | 0 | 663 mm | Good | Monrovia in September |
| October | 28° / 25° | 19 | 12 | 0 | 509 mm | Good | Monrovia in October |
| November | 29° / 25° | 16 | 14 | 0 | 340 mm | Ok | Monrovia in November |
| December | 30° / 26° | 6 | 25 | 0 | 128 mm | Good | Monrovia in December |