The weather in Piedras Negras in May is hot. The average temperatures are between 22°C and 33°C.
You can expect about 3 to 8 days of rain in Piedras Negras during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Piedras Negras in May 2026.
If you’re planning to visit Piedras Negras in the near future, we highly recommend that you review the 14 day weather forecast for Piedras Negras before you arrive.
Temperatures
33° / 22°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
95
mm
Sun Hours
7.2
Hrs
