Ahmedabad: Amdavadis stepped out to vote on Sunday under one of the hottest April days in recent memory, as the temperature climbed to 44.8 degrees Celsius. This matches the same figure recorded on April 29 last year, making it one of the hottest April days in Ahmedabad in at least 25 years.
Early April offered some respite, but since April 12, the city has seen 18 straight days above 40 degrees Celsius. Data indicates that such extremes are becoming more frequent over the past five years, raising fresh concerns about urban heat and its growing impact on daily life.
Long-Term Trends Show Shifting Patterns
Long-term data suggests this is not just a one-off spike. According to temperature trends from the OpenCity portal, the average maximum temperature in April hovered around 41.5 degrees Celsius between 2001 and 2010, and 41.4 degrees Celsius between 2011 and 2020. During these two decades, the highest April temperature recorded was 43.3 degrees Celsius in 2019.
The pattern has shifted sharply since 2021. In the past five years, April temperatures have crossed 44 degrees Celsius three times: 44.4 degrees Celsius in 2022 and 44.8 degrees Celsius in both 2025 and 2026. This has pushed the recent five-year average to 43.4 degrees Celsius, higher than earlier decades.
Factors Intensifying April Heat
Weather experts say March is relatively cooler as temperatures start peaking after mid-March. April is traditionally a transition month before peak summer in May, when temperatures usually hit their highest levels in Ahmedabad and Gujarat. However, multiple factors are now intensifying April heat.
While overall temperatures are increasing in India, the rising heat in Ahmedabad also has to do with microclimatic factors. Urban heat island effects, where dense built-up areas trap heat, are making parts of Ahmedabad hotter than surrounding regions. Wind speed and direction are also influencing daily temperature swings, according to a weather analyst from Ahmedabad.
Erratic Fluctuations and Reduced Nighttime Cooling
Data from the India Meteorological Department (IMD) shows that this April has also seen erratic fluctuations. Western Disturbances have caused temperature variations of up to 3 degrees Celsius within a week, said senior Met department officials. At the same time, higher-than-normal minimum temperatures have reduced nighttime cooling, making it harder for the city to recover from daytime heat.
The combination of rising average temperatures, urban heat island effects, and reduced nighttime cooling is creating a challenging environment for residents. With May typically being the hottest month, concerns are mounting about the health and infrastructure impacts of prolonged heat waves.
