Chiang Rai's climate is characterized by a gradual warming trend throughout the year, with distinct seasonal fluctuations. Winter months, January and February, are mild with average temperatures ranging from 20-22°C, while spring brings increasing warmth in March and April, with temperatures soaring up to 38°C. Summer months, May to June, see consistent highs around 36-37°C, followed by a slight reprieve in July and August with temperatures dipping slightly to 34-35°C. Autumn brings another moderate spell from September to November, before cooling down again in December, returning to milder winter conditions.