Climate averages 1991–2020
Acilia-Castel Fusano-Ostia Antica weather
in October.
A mild, wet month: the 6th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Acilia-Castel Fusano-Ostia Antica: daytime highs average 20.6°C and nights cool to about 15.3°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 131 mm of rain on roughly 10 days, which makes October a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 07 min on an average October day.
The nearest other city in this atlas is Fiumicino (8 km away). In October its highs average 20.5°C, about as warm as Acilia-Castel Fusano-Ostia Antica, with 131 mm of rain.
Among the 79 cities listed in Italy, Acilia-Castel Fusano-Ostia Antica ranks 29th of 79 for the warmest October highs and joint 61st of 79 for the driest October (rainfall, lowest first). The mean October high of those 79 cities is 19.6°C; Acilia-Castel Fusano-Ostia Antica is 1.0°C warmer than that mean.
From October to November, average highs fall by 4.2°C to 16.4°C, and monthly rainfall rises from 131 mm to 161 mm.
The annual picture
October 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
Acilia-Castel Fusano-Ostia Antica climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.0°C6.5°C | 6.5°C | 81 | 10.5 | 9.510 h |
| February | 12.3°C6.4°C | 6.4°C | 79 | 9.7 | 10.611 h |
| March | 14.4°C8.2°C | 8.2°C | 72 | 8.6 | 11.912 h |
| April | 16.9°C10.6°C | 10.6°C | 61 | 8.0 | 13.313 h |
| May | 20.8°C14.5°C | 14.5°C | 40 | 6.0 | 14.515 h |
| June | 24.9°C18.4°C | 18.4°C | 22 | 3.3 | 15.215 h |
| July | 27.7°C21.2°C | 21.2°C | 15 | 1.8 | 14.915 h |
| August | 28.3°C21.8°C | 21.8°C | 21 | 2.6 | 13.914 h |
| September | 24.4°C18.6°C | 18.6°C | 86 | 7.8 | 12.513 h |
| October, selected | 20.6°C15.3°C | 15.3°C | 131 | 10.4 | 11.111 h |
| November | 16.4°C11.5°C | 11.5°C | 161 | 13.3 | 9.910 h |
| December | 12.9°C7.9°C | 7.9°C | 115 | 11.7 | 9.29 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
October in nearby cities
- Fiumicino in OctoberItaly · 8 kmHigh 20.5°C · Low 15.6°C · 131 mm rain
- Rome in OctoberItaly · 21 kmHigh 20.9°C · Low 13.0°C · 116 mm rain
- Aprilia in OctoberItaly · 33 kmHigh 20.4°C · Low 14.1°C · 131 mm rain
- Guidonia Montecelio in OctoberItaly · 41 kmHigh 20.9°C · Low 11.6°C · 113 mm rain
- Latina in OctoberItaly · 58 kmHigh 20.9°C · Low 13.9°C · 127 mm rain
- Terni in OctoberItaly · 93 kmHigh 20.7°C · Low 11.5°C · 105 mm rain
- Perugia in OctoberItaly · 150 kmHigh 17.6°C · Low 8.9°C · 88 mm rain
- Pescara in OctoberItaly · 173 kmHigh 19.8°C · Low 13.0°C · 62 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 Acilia-Castel Fusano-Ostia Antica) is explained once on the Acilia-Castel Fusano-Ostia Antica year overview and on the Sources, method and limits page.
Fiumicino lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.