Climate Chart of Rome, Italy

Climate overview

Temperature

The lowest monthly mean temperature occurs in January, at 7.5 °C; the highest occurs in July, at 26.2 °C. These values describe monthly averages, not daytime maximums, so they are best read as a broad guide to the temperature pattern rather than a forecast of afternoon conditions. Across the calendar-month means, the unweighted mean is 16.3 °C. It summarizes the monthly figures without weighting them by the number of days in each month.

Rain

Mean daily rainfall is lowest in July, at 0.70 mm/day, and highest in November, at 5.20 mm/day. These are average daily amounts for the named months, not monthly rainfall totals; the lower figure does not mean that every day is dry, nor does it indicate how often rain falls. The unweighted mean of the monthly mean daily rainfall figures is 2.47 mm/day. It offers a compact overview, but cannot show the timing or frequency of individual wet days.

Sunshine

Mean daily sunshine reaches its highest monthly value in July, at 13.31 hours/day, and its lowest in November, at 6.47 hours/day. These figures can help frame expectations for outdoor plans, but sunshine duration is not the same as day length and does not guarantee clear skies on a particular date. The unweighted mean across the monthly sunshine figures is 9.68 hours/day per day, a summary of monthly averages rather than a promise of the same sunshine each day.

Snow

The highest monthly mean daily snowfall is recorded in February, at 0.45 mm/day; the unweighted mean across monthly snowfall figures is 0.04 mm/day. These mean amounts do not establish how many days have snowfall, its depth or persistence, or whether snow cover or skiing conditions occur.