Cannes records about 780mm of rain across roughly 62 wet days a year, which is a 17% chance on an average day. October is the wettest month at 131mm (17% of the annual total) and July the driest at 11mm. Local rain type: brief showers. Cannes has a classic Côte d'Azur climate — dry summers and wet autumn. October is the wettest month with sometimes dramatic Mediterranean storms.
Chance of rain on an average day: 17%
Rainfall climatology for Cannes. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 780mm |
| Rain days per year | 62 |
| Odds on an average day | 17% |
| Wettest month | October — 131mm over 11 days |
| Driest month | July — 11mm over 1 days |
| Rain type | brief showers |
| Best dry window | June through August offers reliably dry conditions for beach and festival season. |
| Worst rain window | October and November can bring intense Mediterranean storms with temporary flooding. |
October delivers 1091% more rain than July (131mm vs 11mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 17% of the annual total, so rain in Cannes is spread through the year — there is no season you can rely on being dry.
Cannes rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 11 days in October against 1 in July — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 74mm | 6 | 20% | 12°C |
| February | 49mm | 4 | 13% | 12°C |
| March | 56mm | 5 | 17% | 14°C |
| April | 64mm | 5 | 17% | 18°C |
| May | 43mm | 4 | 13% | 22°C |
| June | 25mm | 2 | 7% | 26°C |
| July | 11mm | 1 | 3% | 28°C |
| August | 22mm | 2 | 7% | 28°C |
| September | 67mm | 6 | 20% | 26°C |
| October | 131mm | 11 | 37% | 22°C |
| November | 101mm | 8 | 27% | 18°C |
| December | 96mm | 8 | 27% | 14°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Cannes we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Cannes records rain on roughly 62 days a year — about a 17% chance on any given day — totalling around 780mm.
October, with about 131mm over 11 rain days. That is 17% of the entire year's rainfall in a single month.
July is the driest month at 11mm across roughly 1 days. June through August offers reliably dry conditions for beach and festival season.
Cannes has a classic Côte d'Azur climate — dry summers and wet autumn. October is the wettest month with sometimes dramatic Mediterranean storms.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.