San Marino weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: May – September
What is the weather like in San Marino in September?
In September, San Marino is warm: daytime highs average 21 °C, and nights cool down to about 12 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 94 mm in total. All in all, September is a good month for a holiday in San Marino.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 89 | 77 | 65 |
| Day | 26° | 21° | 17° |
| Night | 16° | 12° | 9° |
| Sun | 9 h | 7 h | 5 h |
| Rain days | 9 | 11 | 11 |
More details for September
- Daylight
- 12 h 35 min06:48 – 19:23
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 50 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/San_Marino
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %63 %
- Few rainy daysweight 30 %49 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
San Marino in September: quick answers
Is San Marino hot in September?
Warm rather than hot: in September, daytime highs in San Marino average 21 °C and nights cool to about 12 °C.
Does it rain much in San Marino in September?
Rain is frequent, with about 11 rainy days and 94 mm in total.
San Marino month by month
The whole year in San MarinoAll destinations: San MarinoWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences