Although Los Cabos hotels are often busiest starting in mid-October for the sportfishing season the high season doesn't technically begin until mid-December, running through the end of Easter week. It's during this busy period that you'll pay the highest hotel and golf rates. Spring break is also a particularly crowded and raucous time in Cabo San Lucas and in the beach towns along Baja Norte. Downtown Cabo and the border towns are very busy, especially on weekend nights, throughout the year. Whale-watching season from mid-December to April, coincides, and really compounds, the situation during high season, though whale-watchers tend to stay in La Paz and Loreto, not Los Cabos.
The Pacific hurricane season mirrors that of the Atlantic and Caribbean, so there is always a slight chance of a hurricane from August through late October. Although hurricanes rarely hit Los Cabos head-on, the effects can reverberate when a large hurricane hits Mexico's Pacific coast. Though much less frequent than Atlantic hurricanes, Pacific hurricanes do occur and can cause significant damage. Still, most summer tropical storms pass through quickly, even during the Cape's so-called short "rainy" season, from July through October.