With a population of around 4,400, San Martin Zapotitlan sits in Retalhuleu, Guatemala. The city operates in the America/Guatemala time zone.
In 2025, San Martin Zapotitlan recorded an average annual temperature of 76°F. The hottest temperatures reached 93°F in March; the coolest were 58°F in April. Total precipitation for the year was 69 inches, with the wettest month being October.
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