As April 2026 draws to a close, India is experiencing a classic pre-monsoon divide. While large swathes of the country bake under an intense early heatwave, pockets in the northern regions and South India are getting welcome, and sometimes heavy, rainfall accompanied by thunderstorms.
Northwest, central, and parts of eastern India have borne the brunt of extreme temperatures. Cities in Rajasthan, Uttar Pradesh, Haryana, Gujarat, Madhya Pradesh, and Vidarbha have recorded highs between 40-47°C, with several places reporting severe heatwave conditions 4-5°C above normal. On some days, India claimed a staggering share of the world’s hottest cities, highlighting the intensity of this early summer spell driven by clear skies, high-pressure systems, and emerging climate influences.
Heatwave warnings from the India Meteorological Department (IMD) have urged caution, especially for vulnerable populations, as hot and humid conditions add to the discomfort in coastal areas. Daytime peaks have strained power demand, water resources, and public health, with minimal nighttime relief in many interiors.
In stark contrast, the northern hills, Sub-Himalayan West Bengal, Sikkim, and Northeast India have seen fairly widespread to heavy rainfall, thunderstorms, lightning, and gusty winds. Isolated very heavy spells (up to 12–20 cm in places like Tripura and Meghalaya) have brought cooling relief but also risks of localised flooding and hail. Thunderstorm activity is expected to continue into early May in these regions and extend to parts of Northwest and East India
South India’s Mixed Bag
South Peninsular India has enjoyed scattered to widespread pre-monsoon showers, particularly over Kerala, Karnataka, Tamil Nadu, Coastal Andhra Pradesh, and Telangana. Heavy rainfall warnings are in place for Kerala and parts of Tamil Nadu around late April, often accompanied by thunder, lightning, and gusty winds reaching 30–50 kmph. These “mango showers” offer respite from building heat while supporting early agricultural activities, though hail has been reported in interior Karnataka.
Looking Ahead
The IMD forecasts that heatwave conditions in the northwest and central plains will gradually ease after late April, giving way to more thunderstorm activity. However, this volatile pre-monsoon pattern, intense heat punctuated by sudden rains, is typical yet increasingly amplified. With forecasts pointing toward a potentially below-normal southwest monsoon later in 2026, such contrasts underscore the challenges of water management, agriculture, and urban planning across the country.
For residents, the message is clear: stay hydrated and sun-protected in the heat zones, and heed warnings for lightning and heavy downpours elsewhere. India’s weather this April serves as a vivid reminder of its vast climatic diversity, and the need for adaptive resilience.
