With a population of around 122,000, Calumpit sits in Central Luzon, Philippines. The city operates in the Asia/Manila time zone.
In 2025, Calumpit recorded an average annual temperature of 81°F. The hottest temperatures reached 99°F in April; the coolest were 70°F in February. Total precipitation for the year was 107 inches, with the wettest month being July.
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