Goa and Maharashtra experienced India’s first heatwave of the year on February 25, 2025, marking a historic moment as India saw the earliest heatwave on record in 2025. This was the first time a heatwave occurred during winter (January–February), as specified by the India Meteorological Department (IMD). Such an early onset is significant because heatwaves typically occur between March and June. Additionally, February 2025 was the hottest in 125 years, according to the IMD.

These heatwaves continued to intensify throughout March. The highest recorded temperature in India was 43.6°C on March 16 in the Boudh district of Odisha. Odisha had the three warmest spots in the nation that day, with Jharsuguda, Bolangir, and other areas experiencing extremely high temperatures of 42°C and 41.7°C, respectively.

Unseasonably Warm Nights

In February 2025, there were exceptionally warm nights in addition to sweltering midday temperatures. Thirty-one states and union territories (UTs) saw nighttime temperatures at least 1°C above average at least once between February 11 and 23. Twenty-two states and UTs reported nighttime temperatures 3°C to 5°C higher than usual. Notably, on February 12 and 20, nighttime temperatures in Odisha were 5.1°C higher than usual.

The impacted areas were spread throughout several regions of India:

• Central Region: Madhya Pradesh, Maharashtra, Odisha, Gujarat, and Goa
• Northeast and East Region: West Bengal, Assam, Bihar, Jharkhand, Manipur, Meghalaya, Mizoram, Nagaland, and Tripura
• North-West Region: Uttar Pradesh, Uttarakhand, Punjab, Rajasthan, and Haryana
• Southern Peninsula: Puducherry, Karnataka, and Andhra Pradesh

Furthermore, compared to 2024, when warm night conditions were first noted on April 5 and May 29, respectively, Odisha and Jharkhand experienced their very first warm night temperatures on March 15.

Also Read: Air Pollution Worsened Across Nearly All Bengal Cities In 2024: Global Report Finds

Implications and Future Outlook

In keeping with findings from the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), the increasing frequency of heat waves and warm nights highlights a concerning trend of extreme heat events. Long-term exposure to high temperatures during the day and at night can worsen heat stress, raise death rates, and lower agricultural output. Severe heat waves during the day and abnormally warm evenings can disrupt sleep cycles and pose serious health hazards to people. A 1°C increase in nighttime temperatures could lower rice yields by up to 10% and wheat yields by 6%, according to a study published in The Lancet. Warmer evenings can also affect crop quality by changing the nutritional makeup of rice and making it chalky and less appetizing.

In most regions of the country, the approaching hot weather season (March-May) is projected to be warmer than usual, according to the IMD, and there will likely be more heatwave days during this time. This forecast raises concerns about potential damage to winter-planted crops like rapeseed and wheat during their maturation period, particularly in places where planting was delayed. Furthermore, the predicted heatwaves put vulnerable groups at higher risk of illness, such as the elderly, children, and people with underlying medical conditions.

Given these findings, communities and governments must take proactive measures to mitigate the negative consequences of rising temperatures. These efforts could include strengthening healthcare preparedness, adjusting agricultural practices, and developing infrastructure that can withstand extreme heat.

The fact that India saw the earliest heatwave on record in 2025 serves as a stark reminder of the accelerating impact of climate change, emphasizing the urgent need for adaptation and mitigation strategies.

Also Read: NASA Astronauts Butch Wilmore And Sunita Williams Returned To Earth After Nine Months In Space