Mercedes (TX) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Mercedes.
Climate overview of Mercedes
Temperatures in Mercedes, Texas, United States of America, vary greatly throughout the year. August is the hottest month at 36°C (97°F), while January is the coldest at 21°C (70°F).
With around 672 mm (26 in) of annual rainfall, the city has moderate precipitation levels. September is the wettest month and February the driest. It also has a distinct dry season from January to April, with very hot summers and pleasant winters. The most sunshine falls in July, with an average of 10.9 hours of daily sunshine.
Mercedes Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mercedes - and find the best time to visit.
Monthly Temperature in Mercedes
The climate in Mercedes is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very hot 36°C (97°F) in August to a pleasant 21°C (70°F) in the coolest month, January.
Nights vary from 25°C (77°F) in August to around 9°C (48°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Mercedes
Generally, Mercedes receives mid-range precipitation levels, with 672 mm (26 in) annually. The climate in Mercedes shows significant variation throughout the year. Expect high rainfall in September, the wettest month, with an average of 153 mm (6 in) of precipitation over 13 rainy days.
In contrast, the driest month February offers drier and sunnier days, with around 23 mm (0.9 in) of rainfall over 5 rainy days. For more details, please visit our Mercedes Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Mercedes
For those who appreciate different seasons, Mercedes serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.9 hours of sunshine daily, and embrace the darker days in January, offering only 4.4 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Mercedes by Month
The relative humidity is high throughout the year in Mercedes.
The city experiences its highest humidity in January, reaching 78%. In July, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Mercedes
Each month is rated for comfortable sightseeing weather — mild temperatures and low rainfall. Tap a month for its full averages; your ideal time may differ for a beach or winter trip (see below).
- Best overall: January, February, March, November and December
- Warmest weather: June, July and August
- Most sunshine: July
- Wettest period: September, when rainfall peaks.
- Climate seasons: a distinct dry season from January to April, with very hot summers and pleasant winters
Frequently asked questions about the climate in Mercedes
What is the best time to visit Mercedes?
January, February, March, November and December typically offer the most optimal weather in Mercedes. In contrast, June, July, August and September tend to have less optimal conditions. Mercedes has a distinct dry season from January to April, with very hot summers and pleasant winters.
What temperatures can I expect in Mercedes?
Daytime highs range from 21°C (70°F) in January to 36°C (97°F) in August. Nighttime lows range from 9°C (48°F) to 25°C (77°F). Temperatures vary considerably through the year.
How much rain does Mercedes get?
Annual rainfall is around 672 mm (26 in). September is the wettest month with 153 mm (6 in), while February is the driest with 23 mm (0.9 in).
How sunny is Mercedes?
Mercedes receives around 2,715 hours of sunshine per year. July is the sunniest month with 326 hours, while January is the cloudiest with just 133 hours. Overall, Mercedes enjoys abundant sunshine.
Mercedes 3-Day Forecast
Mercedes (TX) 3-Day Forecast
Mercedes on the map
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