Calauan's weather is characterized by a relatively consistent warm climate throughout the year, with temperatures rarely dipping below 20°C. The summer months of April and May are slightly warmer, reaching an average high of around 35°C, while June sees a slight dip in temperature, averaging around 29°C. July and August experience hot afternoons, but not consistently above 39°C. Autumn and winter months see temperatures remain steady, ranging between 22-33°C, with no significant drop in temperature. Overall, the town experiences a tropical climate with warm to hot temperatures year-round.