Lisbon records about 774mm of rain across roughly 83 wet days a year, which is a 23% chance on an average day. November is the wettest month at 114mm (15% of the annual total) and July the driest at 5mm. Local rain type: steady rain. Pack one from October through March. June through September is gloriously dry. Lisbon's hills make waterproof shoes as important as an umbrella in winter.
Chance of rain on an average day: 23%
Rainfall climatology for Lisbon. 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 | 774mm |
| Rain days per year | 83 |
| Odds on an average day | 23% |
| Wettest month | November — 114mm over 13 days |
| Driest month | July — 5mm over 1 days |
| Rain type | steady rain |
| Best dry window | June through September offers near-guaranteed sunshine with minimal rain risk. |
| Worst rain window | November through February brings Atlantic storm systems with heavy, persistent rain. |
November delivers 2180% more rain than July (114mm vs 5mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 15% of the annual total, so rain in Lisbon is spread through the year — there is no season you can rely on being dry.
Lisbon rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 13 days in November 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 | 110mm | 12 | 40% | 15°C |
| February | 111mm | 12 | 40% | 15°C |
| March | 69mm | 8 | 27% | 17°C |
| April | 54mm | 6 | 20% | 20°C |
| May | 44mm | 5 | 17% | 23°C |
| June | 16mm | 2 | 7% | 26°C |
| July | 5mm | 1 | 3% | 28°C |
| August | 5mm | 1 | 3% | 28°C |
| September | 33mm | 4 | 13% | 26°C |
| October | 80mm | 9 | 30% | 23°C |
| November | 114mm | 13 | 43% | 20°C |
| December | 108mm | 12 | 40% | 17°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Lisbon 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.
Lisbon records rain on roughly 83 days a year — about a 23% chance on any given day — totalling around 774mm.
November, with about 114mm over 13 rain days. That is 15% of the entire year's rainfall in a single month.
July is the driest month at 5mm across roughly 1 days. June through September offers near-guaranteed sunshine with minimal rain risk.
Pack one from October through March. June through September is gloriously dry. Lisbon's hills make waterproof shoes as important as an umbrella in winter.
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.