Climate Insights for Del Rio

The climate in Del Rio is warm and mild. The average annual temperature is 22°C and approximately 640mm of precipitation falls per year. September is the wettest month, receiving around 118mm of rainfall. Del Rio is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, December, when temperatures can drop to 6°C.

Temperatures in Del Rio vary considerably across the year, with a 32°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 6°C and an average of 11°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between November and December, with a 6°C shift in average temperatures.

Del Rio is a relatively dry area, receiving approximately 640mm of precipitation annually, which averages out to around 53mm per month. The wettest month is September, averaging 118mm of rainfall. May and August also tend to see above-average precipitation. The driest month is October, with just 4mm. That's 114mm less than September, 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.

Del Rio is relatively calm, with an average annual wind speed of 4km/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 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months.

It is currently summer in Del Rio, which began on June 21, 2026. Del Rio 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 6°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.

The best time to visit Del Rio is during February, March, April, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 41mm per month. By contrast, July can be uncomfortably hot with highs reaching 38°C, while January is the coldest period with lows dropping to 6°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 Del Rio 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.