Lima records about 16mm of rain across roughly 27 wet days a year, which is a 7% chance on an average day. August is the wettest month at 3mm (19% of the annual total) and February the driest at 0mm. Local rain type: drizzle. Lima is one of the world's driest capitals — real rain almost never falls. The garúa (coastal drizzle) from May-November is more mist than rain.
Chance of rain on an average day: 7%
Rainfall climatology for Lima. 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 | 16mm |
| Rain days per year | 27 |
| Odds on an average day | 7% |
| Wettest month | August — 3mm over 5 days |
| Driest month | February — 0mm over 0 days |
| Rain type | drizzle |
| Best dry window | December through April offers clear skies, warm temperatures, and zero rain risk. |
| Worst rain window | May through November brings the garúa — persistent grey mist that rarely produces measurable precipitation. |
August delivers 300% more rain than February (3mm vs 0mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 19% of the annual total, so rain in Lima is spread through the year — there is no season you can rely on being dry.
Lima rain is mostly persistent drizzle, where a waterproof shell beats an umbrella.
Rain falls on about 5 days in August against 0 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 | 1mm | 2 | 7% | 27°C |
| February | 0mm | 0 | 0% | 27°C |
| March | 0mm | 0 | 0% | 26°C |
| April | 0mm | 0 | 0% | 24°C |
| May | 1mm | 2 | 7% | 21°C |
| June | 2mm | 4 | 13% | 19°C |
| July | 3mm | 5 | 17% | 18°C |
| August | 3mm | 5 | 17% | 18°C |
| September | 2mm | 4 | 13% | 19°C |
| October | 1mm | 2 | 7% | 21°C |
| November | 1mm | 2 | 7% | 24°C |
| December | 1mm | 2 | 7% | 26°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Lima 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.
Lima records rain on roughly 27 days a year — about a 7% chance on any given day — totalling around 16mm.
August, with about 3mm over 5 rain days. That is 19% of the entire year's rainfall in a single month.
February is the driest month at 0mm across roughly 0 days. December through April offers clear skies, warm temperatures, and zero rain risk.
Lima is one of the world's driest capitals — real rain almost never falls. The garúa (coastal drizzle) from May-November is more mist than rain.
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.