To make the most of your visit to Merta, the best time to go is during the cooler, drier months, specifically from October to March.
During this period, the weather is pleasantly mild, with daytime temperatures typically ranging from 20 to 30 degrees Celsius. This makes it ideal for exploring Merta's historical sites, such as the Mira Bai Temple and the Dadhimati Mata Temple, without the discomfort of extreme heat or humidity. The clear skies are superb for photography and enjoying the local culture.
For those interested in local festivals, planning your trip around Diwali (usually October or November) or Holi (March) can offer a unique cultural experience. These festivals are celebrated with great enthusiasm, providing a glimpse into the traditions of Rajasthan. However, do be aware that accommodations might be booked up well in advance during these times.
The summer months, from April to June, are very hot, with temperatures often exceeding 40 degrees Celsius, making outdoor activities challenging.