Lake Atitlán (Atitlán) weather in October

Forum posters describe June as the start of the rainy season, with a reliable daily pattern of gorgeous, sunny mornings giving way to possible rain in the afternoon or evening - posters are candid that year-to-year variability is real, with one nine-day June trip seeing almost no rain at all and the same trip the following June bringing rain nearly every day. Posters describe typical temperatures as mid-to-high 50sF at night and mid-to-high 70sF by day, mild and comfortable regardless of rain. Several posters argue June is actually one of the best times to visit specifically because the rain keeps the dust down and keeps the volcano-ringed lake scenery lush and green, recommending a lightweight rain jacket for full-day outings even on a clear morning.

Lake Atitlán's forum calls December part of the reliable dry season — cool, brisk mornings in the mid-teens°C give way to pleasant afternoons in the low-to-mid 20s, with only the odd light shower breaking up mostly clear skies. Regulars recommend layers you can shed once the sun's up, since the highland chill at dawn catches some visitors off guard.