North India is witnessing a concerning spike in temperatures, as evidenced by the record highs reported in various locations. On September 22, 2026, Jaisalmer recorded a maximum temperature of 41.5°C, the highest in the country for that day, according to the India Meteorological Department (IMD). Such a temperature during late September is unusual, as this period typically heralds the arrival of cooler and drier air across the region.

In addition to Jaisalmer, other regions have also reported significant temperature increases. Data from the IMD indicates that several areas, including Vidarbha, Assam and Meghalaya, Arunachal Pradesh, Bihar, Marathwada, and northern interior Karnataka, experienced daytime temperatures 3 to 5 degrees Celsius higher than normal. Notably, pockets in Sub-Himalayan West Bengal and Sikkim recorded even more substantial spikes, indicating a widespread heat anomaly.

Monsoon Retreats, Bringing Increased Temperatures

The rise in temperatures is linked to the ongoing withdrawal of the monsoon. The IMD has identified the monsoon withdrawal line extending through Jaisalmer, Nagaur, Sikar, Rohtak, Patiala, and Gurdaspur. Over the next couple of days, conditions appear favourable for further retreat, impacting regions such as Punjab, Haryana, Delhi, parts of Rajasthan, Saurashtra and Kutch, Jammu and Kashmir, Himachal Pradesh, Uttarakhand, and western Uttar Pradesh.

As the monsoon clouds dissipate and clearer skies prevail in the northwest, the sun’s rays are able to heat the ground more effectively. This causes daytime temperatures to rise rapidly following the withdrawal of monsoon conditions. In contrast, eastern and central India remain engaged in heavy rainfall, attributed to a deep depression forming over the Bay of Bengal, highlighting the stark climatic differences across the nation.

Concerns for Future Temperatures Amid El Nino Predictions

Compounding worries regarding the current heat wave is the potential for unusually high temperatures to extend into the forthcoming winter and beyond. The World Meteorological Organisation (WMO) has reported that the El Nino phenomenon is expected to strengthen through 2026 and may persist into the winter of 2026-27. This climate event is characterised by periodic warming of the tropical Pacific Ocean, which can lead to elevated temperatures and altered weather patterns worldwide.

Typically, years influenced by El Nino are associated with above-normal temperatures in India. This could suggest that both the winter months and the subsequent summer could experience warmer-than-average conditions, raising concerns about a prolonged period of elevated temperatures. Given this context, Jaisalmer’s early heat may serve as an indicator of what lies ahead.

As weather patterns shift and the impacts of climate phenomena become increasingly pronounced, the situation underscores the necessity for ongoing monitoring and assessment. The potentially significant climatic implications are a cause for concern for various sectors, including agriculture and water management, highlighting the urgent need for preparedness as temperatures fluctuate significantly across the country.

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