Cabo San Lucas

What is the weather like in Cabo San Lucas? Average annual rainfall: 10 inches; Coldest months: December and January; Storm season: July to October; Average water temperature: 72º F.
Average air temperatures: 50 to 80º F. winter; 70 to 100º F. summer. The Pacific Ocean side of Los Cabos is generally 10º F. cooler than the Sea of Cortés.
The average year-round temperature is 78F. During the high tourist season, October to April, the temperature is typically 80F during the day and cools to the 60′s at night. In the low season, May to September, the temperature will go up to 100+F during the day and stay in the upper 70′s and low 80′s in the evening. The average year-round water temperature in the Sea of Cortez is 72F. During the summer months the water temperature can reach the mid 80′s. The climate is arid with over 300 days of sunshine, with some reports of over 350 days. Average annual rainfall is 10 inches (25.4cm), most with occurring during the months of September and October.

Cabo San Lucas and Loscabos 3 day weather forecast by Baja Weather

Weather for Cabo San Lucas
Today 02/06/2012 02/07/2012 02/08/2012 02/09/2012 02/10/2012
It is forcast to be Partly Cloudy at 11:00 PM MST on February 05, 2012
Partly Cloudy
84°/55°
It is forcast to be Partly Cloudy at 11:00 PM MST on February 06, 2012
Partly Cloudy
81°/55°
It is forcast to be Clear at 11:00 PM MST on February 07, 2012
Clear
81°/59°
It is forcast to be Mostly Cloudy at 11:00 PM MST on February 08, 2012
Mostly Cloudy
79°/52°
It is forcast to be Chance of Rain at 11:00 PM MST on February 09, 2012
Chance of Rain
75°/48°
It is forcast to be Partly Cloudy at 11:00 PM MST on February 10, 2012
Partly Cloudy
75°/55°