Whether you're visiting Phayao Province in Thailand during the peak of April (37°C (99°F)) or the cooler months around December (29°C (84°F)), knowing what to pack starts with understanding the local climate. Our overview is based on data from Phayao, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
High temperatures are a constant in Phayao Province, especially in Phayao, with average maximums staying above 29°C (84°F) all year long.
March, April and May are generally the hottest months of the year.
When it comes to rainfall, Phayao Province sees significant variations throughout the year. August tends to be the wettest, receiving 290 mm (11 in) of rain, while February is much drier with just 9 mm (0.4 in). Travelers should note that the rainy season falls during May, July, August and September, bringing substantial precipitation ranging from 194 mm (7.6 in) to 290 mm (11 in) monthly. Rainfall in January and February is at its lowest, remaining under 18 mm (0.7 in).
