Chhath Puja typically occurs in November, a time when temperatures in northern India can vary significantly. Early mornings and evenings may be cool, while afternoons can be warm. Participants should prepare for these fluctuations, especially during outdoor rituals like Sandhya Arghya and Usha Arghya, which involve standing near water bodies. Dressing in layers and choosing breathable fabrics like linen can help maintain comfort throughout the day.