January in Iriga City averages a daily high of 29°C with nights around 22.7°C. Expect roughly 21.6 wet days totalling 376mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Iriga City is November–March.
Based on LEGASPI, RP (48.2km), 1995–2024. 24 years of January data.