Climate averages 1991–2020
Cagliari weather
in September.
A warm, fairly dry month: the 4th warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Cagliari: daytime highs average 26.9°C and nights cool to about 18.4°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 31 mm of rain on roughly 5 days, which makes September a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 29 min on an average September day.
The nearest other city in this atlas is Sassari (173 km away). In September its highs average 24.7°C, 2.2°C cooler than Cagliari, with 43 mm of rain.
Among the 79 cities listed in Italy, Cagliari ranks 4th of 79 for the warmest September highs and 2nd of 79 for the driest September (rainfall, lowest first). The mean September high of those 79 cities is 24.3°C; Cagliari is 2.6°C warmer than that mean.
From September to October, average highs fall by 4.1°C to 22.8°C, and monthly rainfall rises from 31 mm to 43 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
Cagliari climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.3°C7.0°C | 7.0°C | 37 | 6.7 | 9.710 h |
| February | 13.7°C6.7°C | 6.7°C | 39 | 7.4 | 10.711 h |
| March | 16.2°C8.2°C | 8.2°C | 46 | 7.5 | 11.912 h |
| April | 18.7°C10.3°C | 10.3°C | 48 | 8.3 | 13.213 h |
| May | 23.0°C13.6°C | 13.6°C | 33 | 5.6 | 14.314 h |
| June | 27.9°C17.5°C | 17.5°C | 10 | 2.1 | 14.915 h |
| July | 31.1°C20.3°C | 20.3°C | 2.0 | 0.5 | 14.615 h |
| August | 31.5°C21.0°C | 21.0°C | 8.1 | 1.8 | 13.714 h |
| September, selected | 26.9°C18.4°C | 18.4°C | 31 | 4.9 | 12.512 h |
| October | 22.8°C15.5°C | 15.5°C | 43 | 6.1 | 11.211 h |
| November | 17.7°C11.6°C | 11.6°C | 62 | 9.1 | 10.110 h |
| December | 14.3°C8.5°C | 8.5°C | 54 | 8.6 | 9.59 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
- Sassari in SeptemberItaly · 173 kmHigh 24.7°C · Low 17.6°C · 43 mm rain
- Bizerte in SeptemberTunisia · 227 kmHigh 27.0°C · Low 21.3°C · 46 mm rain
- Sukrah in SeptemberTunisia · 280 kmHigh 27.8°C · Low 21.1°C · 37 mm rain
- La Marsa in SeptemberTunisia · 282 kmHigh 27.5°C · Low 21.3°C · 37 mm rain
- Tunis in SeptemberTunisia · 283 kmHigh 28.8°C · Low 20.4°C · 38 mm rain
- Annaba in SeptemberAlgeria · 285 kmHigh 29.5°C · Low 20.5°C · 41 mm rain
- Sīdī Ḥusayn in SeptemberTunisia · 289 kmHigh 29.4°C · Low 20.3°C · 34 mm rain
- El Mourouj in SeptemberTunisia · 296 kmHigh 29.7°C · Low 20.1°C · 38 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 Cagliari) is explained once on the Cagliari year overview and on the Sources, method and limits page.