Next on why we chose Ajijic: the weather.
While we can’t speak from experience, we’re told that the weather in Ajijic is like spring all year round. Lows in the 50s, highs in the 70s to low 80s. Lake Chapala is on the high plateau of central Mexico, at about the same elevation as Denver, a mile high. Plus, it’s surrounded by mountains.
From the Wikipedia entry for Ajijic:
The Chapala Lake basin has a year-round average temperature of about 72 °F (22 °C). Due to Ajijic’s tropical latitude, the sun is warm year round; due to its relatively high elevation, it is seldom unpleasantly hot or humid. The rainy season begins in June and lasts until October with an average rainfall of approximately 34 inches (860 mm). Even during the rainy season, precipitation generally occurs during the evening or at night.
December and January are the coolest months and May is the hottest, just before the onset of the rainy season. Overall, there is very little temperature variation year round: daytime highs in January are around 75 °F (24 °C); daytime highs in May are around 80 °F (27 °C) to 90 °F (32 °C).
Sounds good to us.
Update on 17 July 2016:
After being here for a week, I can say that the weather is pretty incredible. There’s a steady light breeze of cool air blowing through the house when the windows are open. The sun is definitely hot, being almost directly overhead in early afternoon—at over 5,000 ft elevation, I can feel the UV rays on my scalp. But move into the shade, and immediately the breeze cools you off.
We’re told it’s the rainy season, but it has only rained overnight. Even so, it doesn’t feel humid. It feels pleasant all day long.