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Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Colaba reached 37.4°C on Friday, 2 October 2026, making it the hottest October reading there since at least 2013, according to contemporary news reports. The India Meteorological Department (IMD) recorded the temperature at 5.6°C above normal. It was a recent-period high, not Colaba’s all-time October record: that remains 39.5°C, set in 1968.
How hot did Colaba get in October?
IMD’s station summary dated 3 October lists a maximum of 37.4°C for Colaba on 2 October, 5.6°C above normal. At Santacruz, the maximum was 36.9°C, or 4.6°C above normal. These are readings from two separate stations; Colaba was 0.5°C warmer that day.
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The same-day station figures are in the IMD daily report.
Was this Colaba’s hottest October day in years?
Hindustan Times and the Times of India described the Colaba reading as south Mumbai’s highest October temperature since at least 2013. The qualification matters: the comparison is about recent years, not the station’s full recorded history. The annual IMD historical-extremes table has not yet populated its 2026 row, so the recent-period claim is best attributed to those reports.
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For the longer historical comparison, IMD lists Colaba’s all-time October maximum as 39.5°C, recorded on 22 October 1968. The 2026 reading was therefore below the all-time October mark.
Why was Mumbai so hot in October?
Sushma Nair, a senior scientist at the Regional Meteorological Centre, IMD Mumbai, attributed the spike to changing winds during monsoon withdrawal, which delayed the sea breeze, and to a nearby anti-cyclone. In her explanation to Hindustan Times, the transition from westerlies to easterlies can block the setting of the sea breeze and delay its onset over the city. This is the explanation she gave for the day’s heat, rather than a separately established causal study.
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Hindustan Times reported Nair’s contemporaneous forecast that daytime temperatures would hover between 35°C and 37°C for two to three days. That was the outlook at the time, not a current forecast.
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Sources and historical context
- IMD daily station report dated 3 October 2026: 2 October maximums and departures from normal.
- IMD historical extremes for Colaba: October all-time maximum of 39.5°C on 22 October 1968.
- Hindustan Times report: recent-period framing, Nair’s explanation and the forecast reported at the time.
- Times of India report: independent coverage of the reading and recent-period comparison.
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