Click on a day for an hourly weather forecast
The temperatures in San Nicolas during September are extremely high, between 28°C and hot as 29°C, drinking water regularly is advisable.
You can expect about 3 to 8 days of rain in San Nicolas during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in San Nicolas in September 2025.
If you’re planning to visit San Nicolas in the near future, we highly recommend that you review the 14 day weather forecast for San Nicolas before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 27° / 26° | 2 | 29 | 0 | 62 mm | Perfect | San Nicolas in January |
| February | 27° / 26° | 2 | 27 | 0 | 39 mm | Perfect | San Nicolas in February |
| March | 27° / 26° | 1 | 30 | 0 | 38 mm | Perfect | San Nicolas in March |
| April | 27° / 26° | 2 | 28 | 0 | 37 mm | Perfect | San Nicolas in April |
| May | 28° / 27° | 4 | 27 | 0 | 60 mm | Perfect | San Nicolas in May |
| June | 28° / 27° | 2 | 28 | 0 | 41 mm | Perfect | San Nicolas in June |
| July | 28° / 27° | 2 | 29 | 0 | 42 mm | Perfect | San Nicolas in July |
| August | 28° / 28° | 3 | 28 | 0 | 55 mm | Perfect | San Nicolas in August |
| September | 29° / 28° | 7 | 23 | 0 | 127 mm | Ok | San Nicolas in September |
| October | 29° / 28° | 10 | 21 | 0 | 205 mm | Ok | San Nicolas in October |
| November | 29° / 28° | 10 | 20 | 0 | 219 mm | Ok | San Nicolas in November |
| December | 28° / 27° | 5 | 26 | 0 | 120 mm | Perfect | San Nicolas in December |