Click on a day for an hourly weather forecast
The weather in Tamarindo in September is very hot. The average temperatures are between 23°C and 29°C, drinking water regularly is advisable.
With more than 22 rainy days, Tamarindo 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 Tamarindo in September 2025.
If you’re planning to visit Tamarindo in the near future, we highly recommend that you review the 14 day weather forecast for Tamarindo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 31° / 21° | 1 | 30 | 0 | 13 mm | Good | Tamarindo in January |
| February | 33° / 21° | 1 | 27 | 0 | 13 mm | Good | Tamarindo in February |
| March | 34° / 22° | 1 | 30 | 0 | 14 mm | Ok | Tamarindo in March |
| April | 34° / 24° | 8 | 22 | 0 | 148 mm | Bad | Tamarindo in April |
| May | 31° / 24° | 22 | 9 | 0 | 565 mm | Ok | Tamarindo in May |
| June | 30° / 23° | 25 | 5 | 0 | 607 mm | Ok | Tamarindo in June |
| July | 30° / 23° | 25 | 6 | 0 | 496 mm | Ok | Tamarindo in July |
| August | 30° / 22° | 25 | 6 | 0 | 554 mm | Ok | Tamarindo in August |
| September | 29° / 23° | 26 | 4 | 0 | 627 mm | Ok | Tamarindo in September |
| October | 28° / 22° | 28 | 3 | 0 | 794 mm | Awful | Tamarindo in October |
| November | 29° / 21° | 19 | 11 | 0 | 402 mm | Ok | Tamarindo in November |
| December | 30° / 21° | 6 | 25 | 0 | 76 mm | Good | Tamarindo in December |