The time of day also affects wind direction. Dry desert breezes are common at night, when warm air rising above the ocean draws cool air from the land. Moist sea breezes prevail when the desert heats up during the day, causing air above the land to rise and draw an onshore flow. Reliable long-term weather data is nonexistent in many instances, and inconsistent or inaccurate in others. Records have improved in recent years, as Cabo San Lucas and San Jose del Cabo have blossomed on tourist and political maps.
Winters are sunny and mild.
The summer moisture is dried, and skies are mostly clear. Nights range in the 50's and 60's. Mid-winter nights can sometimes drop into the 40's, and, rarely, even into the 30's. Freezing is unknown at the beach, but frosty nights are common in the nearby Laguna Mountains, where elevations rise more than a mile above sea level. Spring is the driest season.