Corpus Christi records about 837mm of rain across roughly 103 wet days a year, which is a 28% chance on an average day. October is the wettest month at 120mm (14% of the annual total) and February the driest at 30mm. Local rain type: brief showers.
Chance of rain on an average day: 28%
Rainfall climatology for Corpus Christi. 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 | 837mm |
| Rain days per year | 103 |
| Odds on an average day | 28% |
| Wettest month | October — 120mm over 13 days |
| Driest month | February — 30mm over 5 days |
| Rain type | brief showers |
| Best dry window | February is the most reliable dry stretch of the year. |
| Worst rain window | October carries the highest chance of a washed-out day. |
October delivers 300% more rain than February (120mm vs 30mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 14% of the annual total, so rain in Corpus Christi is spread through the year — there is no season you can rely on being dry.
Corpus Christi rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 13 days in October against 5 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 | 42mm | 7 | 23% | 21°C |
| February | 30mm | 5 | 17% | 22°C |
| March | 30mm | 5 | 17% | 24°C |
| April | 66mm | 7 | 23% | 28°C |
| May | 93mm | 10 | 33% | 31°C |
| June | 93mm | 10 | 33% | 33°C |
| July | 57mm | 6 | 20% | 34°C |
| August | 75mm | 8 | 27% | 33°C |
| September | 111mm | 12 | 40% | 31°C |
| October | 120mm | 13 | 43% | 28°C |
| November | 66mm | 11 | 37% | 24°C |
| December | 54mm | 9 | 30% | 22°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Corpus Christi 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.
Corpus Christi records rain on roughly 103 days a year — about a 28% chance on any given day — totalling around 837mm.
October, with about 120mm over 13 rain days. That is 14% of the entire year's rainfall in a single month.
February is the driest month at 30mm across roughly 5 days.
With rain on about 28% of days and brief showers as the dominant type, a compact umbrella or waterproof shell is worth packing for Corpus Christi outside February.
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.