Cabo San Lucas has a desert climate. Winters bring the driest climate to Los Cabos, averaging just one day and a half inch (10 millimeters) of rain per month. A humid day is one with at least 0.04 inches of liquid precipitation or liquid equivalent. The likelihood of wet days in Cabo San Lucas varies throughout the year.
In Cabo San Lucas, year-round, rainfall falls for 50.9 days and accumulates up to 238 mm (9.37″) of precipitation. Technically, summer is Los Cabos' rainy season, but most of this destination's scant rainfall comes in August and September. The annual rainfall in Cabo is actually less than seven inches, and most of that amount can fall only during a few storms. Some visitors are surprised by the small amount of rainfall they encounter during the so-called Los Cabos rainy season, but it's important to remember that average rainfall figures can be misleading.