| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 13.3° | 5.8° | 72.5mm | 6.6 | 65 |
| February | 13.8° | 6.4° | 54.1mm | 5.6 | 69 |
| March | 15.5° | 8.3° | 54.8mm | 6 | 74 |
| April | 17.6° | 11° | 66.3mm | 8 | 76 |
| May | 21.1° | 14.7° | 42mm | 6.5 | 87 |
| June | 25° | 18.6° | 31.1mm | 4.4 | 91 |
| July | 27.7° | 21.2° | 12.1mm | 2.2 | 93 |
| August | 28.1° | 21.4° | 17.9mm | 3.4 | 89 |
| September | 25° | 18° | 68.9mm | 5.6 | 89 |
| October | 21.4° | 14.5° | 109mm | 7.7 | 85 |
| November | 17.2° | 9.9° | 132.4mm | 9.6 | 72 |
| December | 14.1° | 6.7° | 92mm | 7.4 | 66 |
January in Cannes averages a daily high of 13.3°C with nights around 5.8°C. Expect roughly 6.6 wet days totalling 72.5mm. Generally workable, with some weather to plan around.
February in Cannes averages a daily high of 13.8°C with nights around 6.4°C. Expect roughly 5.6 wet days totalling 54.1mm. Generally workable, with some weather to plan around.
March in Cannes averages a daily high of 15.5°C with nights around 8.3°C. Expect roughly 6 wet days totalling 54.8mm. Generally workable, with some weather to plan around.
April in Cannes averages a daily high of 17.6°C with nights around 11°C. Expect roughly 8 wet days totalling 66.3mm. Comfortable conditions for being outdoors all day.
May in Cannes averages a daily high of 21.1°C with nights around 14.7°C. Expect roughly 6.5 wet days totalling 42mm. Comfortable conditions for being outdoors all day.
June in Cannes averages a daily high of 25°C with nights around 18.6°C. Expect roughly 4.4 wet days totalling 31.1mm. Comfortable conditions for being outdoors all day.
July in Cannes averages a daily high of 27.7°C with nights around 21.2°C. Rain is rare — about 2.2 wet days and 12.1mm across the month. Comfortable conditions for being outdoors all day.
August in Cannes averages a daily high of 28.1°C with nights around 21.4°C. Expect roughly 3.4 wet days totalling 17.9mm. Comfortable conditions for being outdoors all day.
September in Cannes averages a daily high of 25°C with nights around 18°C. Expect roughly 5.6 wet days totalling 68.9mm. Comfortable conditions for being outdoors all day.
October in Cannes averages a daily high of 21.4°C with nights around 14.5°C. Expect roughly 7.7 wet days totalling 109mm. Comfortable conditions for being outdoors all day.
November in Cannes averages a daily high of 17.2°C with nights around 9.9°C. Expect roughly 9.6 wet days totalling 132.4mm. Generally workable, with some weather to plan around.
December in Cannes averages a daily high of 14.1°C with nights around 6.7°C. Expect roughly 7.4 wet days totalling 92mm. Generally workable, with some weather to plan around.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Cannes peaks at 93.
Based on 30 years of records, May–October scores highest for comfort in Cannes, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 28.1°C.
November is the wettest, averaging 132.4mm of rain across roughly 9.6 wet days.
January is the coolest month, with average daily highs around 13.3°C.