Climate averages 1991–2020
Corpus Christi weather
by month.
See how the year changes. August has the highest average daily maximum; February has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: JanuaryFebruaryMarchAprilNovemberDecember
Long-term climate patterns, not a forecast for a particular trip.
Across the year Corpus Christi averages a daytime high of 26.4°C and a nighttime low of 18.9°C, with about 757 mm of rain on roughly 99 days. August is the warmest month (average high 33.1°C) and January the coolest (18.9°C). September is the wettest month with 113 mm; February is the driest with 38 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): January, February, March, April, November and December. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Corpus Christi
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Corpus Christi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.9°C10.6°C | 10.6°C | 48 | 6.9 | 10.611 h |
| February | 20.8°C12.5°C | 12.5°C | 38 | 6.2 | 11.211 h |
| March | 23.4°C15.5°C | 15.5°C | 59 | 6.8 | 12.012 h |
| April | 26.5°C18.8°C | 18.8°C | 52 | 7.0 | 12.813 h |
| May | 29.4°C22.5°C | 22.5°C | 71 | 9.0 | 13.514 h |
| June | 31.6°C25.0°C | 25.0°C | 73 | 9.5 | 13.914 h |
| July | 32.4°C25.7°C | 25.7°C | 58 | 7.8 | 13.714 h |
| August | 33.1°C25.8°C | 25.8°C | 59 | 9.1 | 13.113 h |
| September | 30.7°C23.8°C | 23.8°C | 113 | 13.5 | 12.312 h |
| October | 27.7°C20.0°C | 20.0°C | 82 | 9.3 | 11.512 h |
| November | 23.1°C15.3°C | 15.3°C | 53 | 7.0 | 10.811 h |
| December | 19.8°C11.7°C | 11.7°C | 51 | 7.2 | 10.410 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- EdinburgUnited States · 183 kmHigh 29.6°C · Low 19.6°C · 542 mm rain a year
- McAllenUnited States · 196 kmHigh 29.5°C · Low 19.7°C · 542 mm rain a year
- MissionUnited States · 199 kmHigh 29.7°C · Low 19.6°C · 542 mm rain a year
- San AntonioUnited States · 210 kmHigh 26.3°C · Low 16.1°C · 834 mm rain a year
- ReynosaMexico · 211 kmHigh 29.7°C · Low 19.7°C · 538 mm rain a year
- Nuevo LaredoMexico · 212 kmHigh 29.7°C · Low 18.9°C · 487 mm rain a year
- Ciudad Río BravoMexico · 213 kmHigh 29.3°C · Low 19.8°C · 557 mm rain a year
- Heroica MatamorosMexico · 214 kmHigh 27.4°C · Low 20.6°C · 619 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-6, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 27.80°, -97.50° (10 km from the city centre). Rain comes from the 0.25° cell at 27.75°, -97.50°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.