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Civitavecchia has a Mediterranean climate on the Tyrrhenian coast, 80 km northwest of Rome. The sea moderates extremes, so winters stay mild (rarely below 4°C) and summers are hot but not scorching, cooled by a steady sea breeze. Expect around 650 mm of rain a year, concentrated in autumn and winter, while July is nearly bone-dry at 12 mm.
Civitavecchia Weather by Month: Temperatures and Rainfall
Average temperatures below are for the town and its harbor. The sea temperature matters if you are sailing: it peaks at 25°C in August and drops to 14°C by February.
| Month | Avg High (°C/°F) | Avg Low (°C/°F) | Rain (mm) | Sea Temp (°C) | Sun Hours/Day |
|---|---|---|---|---|---|
| January | 13 / 55 | 6 / 43 | 72 | 14 | 4 |
| February | 13 / 55 | 6 / 43 | 68 | 14 | 5 |
| March | 15 / 59 | 7 / 45 | 60 | 14 | 6 |
| April | 18 / 64 | 9 / 48 | 52 | 16 | 7 |
| May | 22 / 72 | 13 / 55 | 38 | 18 | 8 |
| June | 26 / 79 | 17 / 63 | 20 | 21 | 10 |
| July | 29 / 84 | 20 / 68 | 12 | 24 | 11 |
| August | 29 / 84 | 20 / 68 | 28 | 25 | 10 |
| September | 26 / 79 | 17 / 63 | 58 | 23 | 8 |
| October | 22 / 72 | 14 / 57 | 95 | 20 | 6 |
| November | 17 / 63 | 10 / 50 | 110 | 17 | 4 |
| December | 14 / 57 | 7 / 45 | 88 | 15 | 4 |
Civitavecchia Weather by Month: Winter
December through February are the coolest months, with highs of 13 to 14°C and 72 to 88 mm of monthly rain. This is the quiet season for cruises and ferries, and rates at the seafront hotels drop by 30 to 40 percent.
Civitavecchia Weather by Month: Summer
June through August are the warmest and driest, peaking at 29°C with only 12 to 28 mm of rain. Sea temperatures of 24 to 25°C make this the best window for the beach, and it lines up neatly with the best time to visit for swimming.
Civitavecchia Weather by Month: Autumn
October and November are the wettest stretch at 95 to 110 mm, when outdoor plans depend on the day’s forecast. For how the rain shapes sightseeing around the port, see the things to do list.
Arrival logistics stay the same whatever the month; the travel tips and FAQ page covers trains and port shuttles.
For festive dates worth dodging or catching, the events calendar is worth a look, and the neighborhood guide explains which area to base yourself in.
