Climate averages 1991–2020
Acilia-Castel Fusano-Ostia Antica weather
in August.
A hot, fairly dry month: the warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Acilia-Castel Fusano-Ostia Antica: daytime highs average 28.3°C and nights cool to about 21.8°C. By daytime temperature it is the warmest month of the year.
Expect about 21 mm of rain on roughly 3 days, which makes August a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 52 min on an average August day.
The nearest other city in this atlas is Fiumicino (8 km away). In August its highs average 27.9°C, about as warm as Acilia-Castel Fusano-Ostia Antica, with 21 mm of rain.
Among the 79 cities listed in Italy, Acilia-Castel Fusano-Ostia Antica ranks joint 53rd of 79 for the warmest August highs and joint 20th of 79 for the driest August (rainfall, lowest first). The mean August high of those 79 cities is 29.1°C; Acilia-Castel Fusano-Ostia Antica is 0.8°C cooler than that mean.
From August to September, average highs fall by 3.9°C to 24.4°C, and monthly rainfall rises from 21 mm to 86 mm.
The annual picture
August 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, selected | 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 | 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
August in nearby cities
- Fiumicino in AugustItaly · 8 kmHigh 27.9°C · Low 22.0°C · 21 mm rain
- Rome in AugustItaly · 21 kmHigh 30.4°C · Low 20.0°C · 22 mm rain
- Aprilia in AugustItaly · 33 kmHigh 28.8°C · Low 20.9°C · 22 mm rain
- Guidonia Montecelio in AugustItaly · 41 kmHigh 31.5°C · Low 19.0°C · 28 mm rain
- Latina in AugustItaly · 58 kmHigh 29.6°C · Low 20.8°C · 24 mm rain
- Terni in AugustItaly · 93 kmHigh 31.6°C · Low 19.0°C · 33 mm rain
- Perugia in AugustItaly · 150 kmHigh 28.4°C · Low 16.6°C · 38 mm rain
- Pescara in AugustItaly · 173 kmHigh 28.7°C · Low 20.2°C · 39 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.