About Guanajay, Artemisa's Climate & Weather History

With a population of around 25,300, Guanajay sits in Artemisa, Cuba. The city operates in the America/Havana time zone.

In 2025, Guanajay recorded an average annual temperature of 77°F. The hottest temperatures reached 95°F in August; the coolest were 57°F in January. Total precipitation for the year was 36 inches, with the wettest month being September.