Italy has two good windows: Mar–Jun and Sep–Nov. They sit either side of the season the climate record rules out, which is why the shoulder months matter here. The recommended window is Apr–Jul, Sep–Oct.
Hot dry summers, wet winters
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 11.6 | 53 | 29% | Fair |
| February | 12.4 | 54 | 33% | Fair |
| March | 15.4 | 60 | 29% | Go |
| April | 18.8 | 66 | 32% | Go |
| May | 23.4 | 74 | 28% | Go |
| June | 28.1 | 83 | 22% | Go |
| July | 31.8 | 89 | 14% | Fair |
| August | 32.3 | 90 | 16% | Fair |
| September | 27.0 | 81 | 31% | Go |
| October | 22.1 | 72 | 34% | Go |
| November | 16.5 | 62 | 43% | Go |
| December | 12.5 | 54 | 36% | Fair |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
July is the driest month, with rain on 14% of days and daytime highs near 31.8°C (89°F). November is the wettest, at 43%. Temperature swings hard across the year — 20.7°C between August (32.3°C / 90°F) and January (11.6°C / 53°F) — so packing for the wrong month is the main risk.