Climate Insights for Cotulla

The climate in Cotulla is warm and mild. The average annual temperature is 24°C and approximately 584mm of precipitation falls per year. May is the wettest month, receiving around 114mm of rainfall. Cotulla is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to 8°C.

Temperatures in Cotulla vary considerably across the year, with a 30°C difference between the coldest and warmest months. July is the hottest month, with daytime highs reaching 38°C and an average of 32°C. January is the coolest month, with minimum temperatures around 8°C and an average of 13°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Cotulla is a relatively dry area, receiving approximately 584mm of precipitation annually, which averages out to around 49mm per month. The wettest month is May, averaging 114mm of rainfall. September and April also tend to see above-average precipitation. The driest month is February, with just 21mm. That's 92mm less than May, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Cotulla is mildly breezy, with an average annual wind speed of 20km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 23km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in November, with average winds dropping to 17km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 6km/h between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 18km/h in winter, 22km/h in spring, 22km/h in summer, 18km/h in autumn.

It is currently spring in Cotulla, which began on March 20, 2026. Cotulla is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 38°C, while the coldest stretch bottoms out in January near 8°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The best time to visit Cotulla is during February, March, April, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 39mm per month. By contrast, July can be uncomfortably hot with highs reaching 38°C, while January is the coldest period with lows dropping to 8°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Cotulla based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.