Alfonso Castaneda, in Cagayan Valley, Philippines, is home to roughly 8,500 people in the Asia/Manila time zone at 15.8°N latitude.
In 2025, Alfonso Castaneda recorded an average annual temperature of 75°F. The hottest temperatures reached 90°F in April; the coolest were 64°F in January. Total precipitation for the year was 112 inches, with the wettest month being July.
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