South Mumbai’s Colaba recorded its hottest October day in 13 years on October 2. The weather station touched 37.4 degrees Celsius. That was 5.6 degrees above normal for this time of year. The India Meteorological Department confirmed the reading. It is the highest October temperature at Colaba since at least 2013. The all-time record for October at Colaba stands at 39.5 degrees, set in 1968. The post-monsoon heat is linked to clear skies and weak winds. Residents felt intense heat through the afternoon. The IMD has said warm days may continue in Mumbai. Doctors advise staying hydrated and avoiding midday sun. October heat often returns to Mumbai after the monsoon withdraws. This year’s spike has come unusually early in the month. The normal maximum for early October at Colaba is about 31.8 degrees, so Friday was far hotter. Humidity made the heat feel worse through the afternoon. The IMD issues advisories when heat crosses danger thresholds. Warm days may persist into next week.