Cartagena records about 1010mm of rain across roughly 100 wet days a year, which is a 27% chance on an average day. October is the wettest month at 190mm (19% of the annual total) and February the driest at 2mm. Local rain type: thunderstorms. Cartagena's dry season (December-April) is ideal with minimal rain and Caribbean breezes. The wet season brings powerful afternoon thunderstorms that clear by evening — morning sightseeing stays dry.
Chance of rain on an average day: 27%
Rainfall climatology for Cartagena. 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 | 1010mm |
| Rain days per year | 100 |
| Odds on an average day | 27% |
| Wettest month | October — 190mm over 19 days |
| Driest month | February — 2mm over 1 days |
| Rain type | thunderstorms |
| Best dry window | December through March is the driest period with reliable sunshine and the most comfortable humidity levels. |
| Worst rain window | September and October bring the heaviest rains with afternoon thunderstorms that can briefly flood low-lying streets in Getsemaní. |
October delivers 9400% more rain than February (190mm vs 2mm). 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 Cartagena is spread through the year — there is no season you can rely on being dry.
Cartagena rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 19 days in October against 1 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 | 5mm | 1 | 3% | 31°C |
| February | 2mm | 1 | 3% | 31°C |
| March | 5mm | 1 | 3% | 31°C |
| April | 40mm | 4 | 13% | 31°C |
| May | 110mm | 11 | 37% | 32°C |
| June | 120mm | 12 | 40% | 32°C |
| July | 100mm | 10 | 33% | 32°C |
| August | 130mm | 13 | 43% | 32°C |
| September | 140mm | 14 | 47% | 32°C |
| October | 190mm | 19 | 63% | 32°C |
| November | 130mm | 13 | 43% | 31°C |
| December | 40mm | 4 | 13% | 31°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Cartagena 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.
Cartagena records rain on roughly 100 days a year — about a 27% chance on any given day — totalling around 1010mm.
October, with about 190mm over 19 rain days. That is 19% of the entire year's rainfall in a single month.
February is the driest month at 2mm across roughly 1 days. December through March is the driest period with reliable sunshine and the most comfortable humidity levels.
Cartagena's dry season (December-April) is ideal with minimal rain and Caribbean breezes. The wet season brings powerful afternoon thunderstorms that clear by evening — morning sightseeing stays dry.
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.