Climate averages 1991–2020
Acilia-Castel Fusano-Ostia Antica weather
in April.
A mild, moderately wet month: the 7th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Acilia-Castel Fusano-Ostia Antica: daytime highs average 16.9°C and nights cool to about 10.6°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 61 mm of rain on roughly 8 days, which makes April a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 19 min on an average April day.
The nearest other city in this atlas is Fiumicino (8 km away). In April its highs average 16.7°C, about as warm as Acilia-Castel Fusano-Ostia Antica, with 61 mm of rain.
Among the 79 cities listed in Italy, Acilia-Castel Fusano-Ostia Antica ranks joint 55th of 79 for the warmest April highs and joint 19th of 79 for the driest April (rainfall, lowest first). The mean April high of those 79 cities is 17.4°C; Acilia-Castel Fusano-Ostia Antica is 0.5°C cooler than that mean.
From April to May, average highs rise by 4.0°C to 20.8°C, and monthly rainfall falls from 61 mm to 40 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Fiumicino in AprilItaly · 8 kmHigh 16.7°C · Low 10.9°C · 61 mm rain
- Rome in AprilItaly · 21 kmHigh 17.9°C · Low 8.5°C · 77 mm rain
- Aprilia in AprilItaly · 33 kmHigh 17.0°C · Low 9.5°C · 74 mm rain
- Guidonia Montecelio in AprilItaly · 41 kmHigh 18.4°C · Low 7.4°C · 94 mm rain
- Latina in AprilItaly · 58 kmHigh 17.6°C · Low 9.2°C · 85 mm rain
- Terni in AprilItaly · 93 kmHigh 18.4°C · Low 7.4°C · 98 mm rain
- Perugia in AprilItaly · 150 kmHigh 15.6°C · Low 5.1°C · 79 mm rain
- Pescara in AprilItaly · 173 kmHigh 17.1°C · Low 8.8°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.