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The weather in San Giljan in September is very hot. The average temperatures are between 25°C and 26°C, drinking water regularly is advisable.
You can expect a few rainy days in San Giljan during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in San Giljan in September 2025.
If you’re planning to visit San Giljan in the near future, we highly recommend that you review the 14 day weather forecast for San Giljan before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 14° | 4 | 27 | 0 | 84 mm | Good | San Giljan in January |
| February | 15° / 13° | 4 | 24 | 0 | 82 mm | Good | San Giljan in February |
| March | 15° / 14° | 3 | 28 | 0 | 56 mm | Good | San Giljan in March |
| April | 17° / 15° | 1 | 29 | 0 | 19 mm | Good | San Giljan in April |
| May | 20° / 18° | 1 | 30 | 0 | 16 mm | Good | San Giljan in May |
| June | 24° / 22° | 0 | 30 | 0 | 7 mm | Perfect | San Giljan in June |
| July | 27° / 25° | 0 | 31 | 0 | 1 mm | Perfect | San Giljan in July |
| August | 28° / 26° | 1 | 30 | 0 | 9 mm | Perfect | San Giljan in August |
| September | 26° / 25° | 2 | 28 | 0 | 50 mm | Perfect | San Giljan in September |
| October | 24° / 22° | 6 | 25 | 0 | 126 mm | Perfect | San Giljan in October |
| November | 21° / 19° | 6 | 24 | 0 | 139 mm | Good | San Giljan in November |
| December | 17° / 16° | 4 | 27 | 0 | 89 mm | Good | San Giljan in December |