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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.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 18° / 9° | 1 | 29 | 0 | 19 mm | Good | Piedras Negras in January |
| February | 21° / 10° | 1 | 27 | 0 | 20 mm | Good | Piedras Negras in February |
| March | 26° / 14° | 2 | 29 | 0 | 26 mm | Perfect | Piedras Negras in March |
| April | 30° / 18° | 3 | 27 | 0 | 43 mm | Good | Piedras Negras in April |
| May | 33° / 22° | 5 | 26 | 0 | 95 mm | Good | Piedras Negras in May |
| June | 36° / 25° | 3 | 27 | 0 | 82 mm | Ok | Piedras Negras in June |
| July | 37° / 26° | 3 | 28 | 0 | 63 mm | Ok | Piedras Negras in July |
| August | 37° / 26° | 2 | 29 | 0 | 50 mm | Ok | Piedras Negras in August |
| September | 33° / 24° | 5 | 25 | 0 | 124 mm | Good | Piedras Negras in September |
| October | 29° / 19° | 2 | 29 | 0 | 60 mm | Good | Piedras Negras in October |
| November | 23° / 13° | 2 | 28 | 0 | 25 mm | Perfect | Piedras Negras in November |
| December | 19° / 10° | 1 | 29 | 0 | 23 mm | Good | Piedras Negras in December |