Big protests next will see roadblocks of many main highways and demonstrations in the capital and other cities on August 25-27 (Tuesday through Thursday). Roadblocks begin at 5 AM daily, so the only way to travel to Lake Atitlan and other parts of Guatemala will at night on extremely overcrowded chicken buses, if at all. However, some shuttle companies know the back roads between Antigua and the lake, so check with them.
As of Tuesday, the road from Xela to the Mexican border and San Cristobal de las Casas was blocked. So was the Interamerican Highway in the Momostenango area and other parts of the country.
If flying out, shuttles will likely operate between Antigua and the airport after sundown, so spend the night before your departing flight in the capital to ensure missing the plane.
Armed robberies of “chicken buses” have increased dramatically in recent months throughout Guatemala. They have been robbed on the routes between Guatemala City and Antigua, Lake Atitlan and the both coastal highways. Antigua had no chicken bus service for two days this month after drivers went on strike to protest the lack of police protection. And of course, several chicken buses drive off a cliff or crash into another bus or vehicle every year.
Shuttles are far safer, though do occasionally get robbed. And shuttles don’t cost much more: from San Pedro to the capital, Q50 versus Q30. If you must take a bus, do not travel after dark, especially on the Pacific coast between Mexico and Salvador.
There are lots of roadblocks around Guatemala during the many demonstrations here, which usually take place on Mondays and Saturdays. If flying out on those days, arrive the day before and spend the night in order to avoid missing your flight.
CONRED, a local agency, issues alerts on Twitter about roadblocks, traffic jams and weather forecasts for Guatemala. The link is Road & Traffic News from Guatemala.
For Lake Atitlan and Antigua weather directly from a tourism site at Lake Atitlan, see Lake Atitlan Weather.