Uttaradit's climate is characterized by a hot and humid summer, with temperatures often reaching over 40°C in March and April. The hottest months are typically between May and June, with average highs around 39°C, but the heat index can make it feel even more sweltering. Autumn brings slightly cooler temperatures, with averages ranging from 24-28°C from September to November. Winters, from December to February, are relatively mild, with average lows in January dipping as low as 12°C and highs peaking at around 37°C. The temperature remains relatively consistent throughout the year, with minimal seasonal fluctuations.