Climate averages 1991–2020
Rimini weather
in September.
A warm, moderately wet month: the 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Rimini: daytime highs average 23.7°C and nights cool to about 17.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 75 mm of rain on roughly 9 days, which makes September a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 34 min on an average September day.
The nearest other city in this atlas is San Marino (16 km away). In September its highs average 20.5°C, 3.1°C cooler than Rimini, with 75 mm of rain.
Among the 79 cities listed in Italy, Rimini ranks joint 54th of 79 for the warmest September highs and joint 29th of 79 for the driest September (rainfall, lowest first). The mean September high of those 79 cities is 24.3°C; Rimini is 0.6°C cooler than that mean.
From September to October, average highs fall by 4.5°C to 19.2°C, and monthly rainfall rises from 75 mm to 83 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Rimini climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.4°C4.3°C | 4.3°C | 59 | 8.7 | 9.39 h |
| February | 10.3°C4.3°C | 4.3°C | 69 | 8.5 | 10.410 h |
| March | 13.2°C6.8°C | 6.8°C | 66 | 8.5 | 11.912 h |
| April | 16.4°C9.8°C | 9.8°C | 71 | 10.4 | 13.413 h |
| May | 21.0°C14.2°C | 14.2°C | 65 | 9.3 | 14.715 h |
| June | 25.5°C18.5°C | 18.5°C | 50 | 6.7 | 15.415 h |
| July | 28.2°C20.9°C | 20.9°C | 38 | 5.7 | 15.115 h |
| August | 28.1°C21.1°C | 21.1°C | 49 | 7.0 | 14.014 h |
| September, selected | 23.7°C17.3°C | 17.3°C | 75 | 9.0 | 12.613 h |
| October | 19.2°C13.6°C | 13.6°C | 83 | 9.6 | 11.011 h |
| November | 14.3°C9.5°C | 9.5°C | 91 | 10.9 | 9.710 h |
| December | 10.4°C5.5°C | 5.5°C | 81 | 10.6 | 9.09 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- San Marino in SeptemberSan Marino · 16 kmHigh 20.5°C · Low 11.6°C · 75 mm rain
- Cesena in SeptemberItaly · 27 kmHigh 24.4°C · Low 14.6°C · 58 mm rain
- Pesaro in SeptemberItaly · 33 kmHigh 23.4°C · Low 17.7°C · 67 mm rain
- Forlì in SeptemberItaly · 46 kmHigh 24.9°C · Low 14.5°C · 61 mm rain
- Ravenna in SeptemberItaly · 49 kmHigh 24.4°C · Low 16.2°C · 74 mm rain
- Arezzo in SeptemberItaly · 86 kmHigh 23.9°C · Low 14.4°C · 94 mm rain
- Ancona in SeptemberItaly · 91 kmHigh 23.7°C · Low 17.6°C · 60 mm rain
- Perugia in SeptemberItaly · 106 kmHigh 22.6°C · Low 12.6°C · 79 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Rimini) is explained once on the Rimini year overview and on the Sources, method and limits page.
San Marino lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.