Rainfall and Sunshine Days
Rainfall is characterized by two rainy seasons and two dry seasons. Normally we get some rain year around but the periods between mid-March to mid-June and mid-September to mid-November are our wet seasons. Here they are called winter or invierno. Peak rains in May are around 19 cm or 7 inches and in October we typically get around 22 cm or about 8.6 inches. During these months rain falls on an average of 23 (May) and 24 days (October).
The remaining months are drier and are call summer or verano. January generally is driest with around 2 inches of rain and July with about 4 inches. July and August are the sunniest months with averages of 204 and 192 hours respectively. During the December to March dry season it is generally a bit cloudier with about 176 hours of sunshine in January.
The rainy seasons have the least hours of sunshine (big surprise!). In April the average hours per day are only 128 while in October they are 135. Even during the rainy season mornings are often sunny with storms moving through during the afternoon. It is rare to have long periods of overcast.
The relative humidity here is generally not oppressive with averages between 66% and 73%. There are a few days each month when it gets pretty muggy but these are relatively few and a noticeable difference.
The temperatures here are very pleasant most of the time and much cooler than the lowlands. Average minimum temperatures are between 61F (16.1 C) and 63F (17C). Average maximum temperatures range from 81F (27.2C) to 83F (28.5C).