Rainy Week For Mumbai: More Intense Showers In The Second Half
Mumbai received hefty monsoon showers last week. As predicted, monsoon activity remained subdued in the last five days. An uptick in weather activity is likely during this week. The intensity and spread of rainfall will be greater in the second half of the week. A few spells of heavy weather activity remain on the cards, affecting commute and connectivity.
Monsoon activity for Konkan in general, and Mumbai in particular, picks up with the formation of systems over the Bay of Bengal. An active offshore trough, from South Gujarat extending southward, also escalates monsoon strength. Presently, the remnant low-pressure area with its associated cyclonic circulation is marked over West Madhya Pradesh and adjoining Uttar Pradesh. Though this is a favorable position for accentuating monsoon activity, the system has weakened and may at best trigger moderate showers interspersed with isolated heavy ones. A fresh monsoon system is likely to develop over the Bay of Bengal, and a low-pressure area is expected to move inland on 28 August. This weather system will track along Odisha, Chhattisgarh, Madhya Pradesh, and East Rajasthan between 28 and 31 August 2025.
The monsoon westerly stream is expected to gain strength incrementally along the Konkan Coast between 25 and 31 August. Moderate rainfall, mixed with isolated heavy showers, is likely between 25 and 27 August. Pace and power will increase in the second half of the week. Intermittent heavy showers are expected between 28 and 31 August. These are likely to ease out on or after 2 September, when the weather system moves to a safe distance over Northwest Rajasthan.
The record station for Mumbai, Santacruz, has registered 1,055.5 mm of rainfall between 1 and 25 August 2025. With likely spells of intense showers during this week, monthly rainfall may reach double the normal of 585.2 mm. The city recorded 1,240.1 mm of rainfall in August 2020, very close to the all-time record of 1,254 mm in August 1958. There is an outside chance of surpassing this landmark at the fag end of the month.
