Lyon records about 830mm of rain across roughly 110 wet days a year, which is a 30% chance on an average day. October is the wettest month at 90mm (11% of the annual total) and February the driest at 45mm. Local rain type: steady rain. Lyon gets moderate, well-distributed rainfall. The city sits at the confluence of two rivers, creating its own weather patterns. Summer thunderstorms are common but brief — an umbrella handles most conditions.
Chance of rain on an average day: 30%
Rainfall climatology for Lyon. 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 | 830mm |
| Rain days per year | 110 |
| Odds on an average day | 30% |
| Wettest month | October — 90mm over 12 days |
| Driest month | February — 45mm over 6 days |
| Rain type | steady rain |
| Best dry window | February and July are the driest months, with July also being the warmest — ideal for terrace dining along the Saône. |
| Worst rain window | October and November bring the most rain, often as steady all-day drizzle that settles over the two river valleys. |
October delivers 100% more rain than February (90mm vs 45mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 11% of the annual total, so rain in Lyon is spread through the year — there is no season you can rely on being dry.
Lyon rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 12 days in October against 6 in February — 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 | 50mm | 7 | 23% | 6°C |
| February | 45mm | 6 | 20% | 6°C |
| March | 55mm | 8 | 27% | 9°C |
| April | 65mm | 9 | 30% | 14°C |
| May | 80mm | 11 | 37% | 20°C |
| June | 75mm | 10 | 33% | 25°C |
| July | 60mm | 8 | 27% | 28°C |
| August | 65mm | 9 | 30% | 28°C |
| September | 80mm | 11 | 37% | 25°C |
| October | 90mm | 12 | 40% | 20°C |
| November | 80mm | 11 | 37% | 14°C |
| December | 55mm | 8 | 27% | 9°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Lyon 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.
Lyon records rain on roughly 110 days a year — about a 30% chance on any given day — totalling around 830mm.
October, with about 90mm over 12 rain days. That is 11% of the entire year's rainfall in a single month.
February is the driest month at 45mm across roughly 6 days. February and July are the driest months, with July also being the warmest — ideal for terrace dining along the Saône.
Lyon gets moderate, well-distributed rainfall. The city sits at the confluence of two rivers, creating its own weather patterns. Summer thunderstorms are common but brief — an umbrella handles most conditions.
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.