IMD Warns of Heavy Rain in Maharashtra, Light Showers in Delhi on Sep 29

When India Meteorological Department released its Weather Forecast September 29, 2025 on Tuesday, the headline was clear: a patchwork of rain, thunderstorms, and lingering heat will define the last days of September across the subcontinent.

Here's the thing – the bulletin, dated September 26, 2025, paints a picture of relief for the sweltering north, while the west and northeast brace for bouts of heavy rain. Temperatures in Delhi will hover between 23.9 °C and 32.2 °C, with the monsoon finally loosening its grip. Meanwhile, Maharashtra and the coastal stretch of Goa are set for very heavy to extremely heavy downpours.

Regional Outlook at a Glance

Breaking the country into five weather zones helps readers see where the biggest impacts will land.

• North & Central Plains: Light rain, decreasing humidity.
• Western Coast: Intense thunderstorms, localized flooding.
• Eastern Sub‑Himalayan belt: Gusty winds, scattered showers.
• Northeast: Moderate rain, isolated heavy bouts.
• Island territories (Andaman & Nicobar): Strong gusts, thunder.

Northern Plains – Delhi and the Gangetic Belt

Delhi’s weather this week signals the official end of the monsoon season. The capital will enjoy about twelve hours of sunshine a day, but expect brief showers in the late afternoon. Humidity, which has clung at around 70 % for weeks, is finally slipping toward the low‑50s, making evenings feel a touch more breathable.

Rainfall totals for September across the capital are projected at a modest 15 mm – a stark contrast to the July‑August deluge that topped 300 mm. “People can expect a pleasant cool‑down without the flooding concerns we saw earlier in the month,” said Anita Singh, spokesperson for the IMD, during a brief press briefing on September 26.

Air quality monitors are also indicating a slight improvement, as lower humidity reduces particulate suspension. Still, the city’s temperature swing from a low of 23.9 °C to a high of 32.2 °C means that heat‑related ailments could linger for those without proper cooling.

Western Coast – Maharashtra, Konkan, and Goa

Now, turn your gaze west. The IMD forecast calls for “very heavy” rain on September 27 and 28 across Maharashtra and the Konkan coast, with the most intense deluge expected in the Ghat regions. Goa, already in the grip of a wet season, should see rainfall exceeding 200 mm over the next five days, according to the agency’s models.

Experts warn that such concentrated downpours could trigger flash floods in low‑lying districts like Raigad and Sindhudurg. “The terrain there funnels water quickly into river basins,” notes Dr. Priya Nair, a climate analyst at the Indian Institute of Tropical Meteorology. “If the drainage systems are not cleared, we could see road closures and localized evacuations.”

Residents are advised to keep sandbags ready and avoid traveling on mountainous routes after dark. The state government has already mobilized the National Disaster Response Force (NDRF) to stand by in key valleys.

Eastern Sub‑Himalayan Belt – West Bengal, Jharkhand, Bihar, Sikkim

From the foothills, the weather takes on a more turbulent tone. Thunderstorms with wind gusts of 30‑50 km/h are “very likely” over West Bengal, Jharkhand, Bihar, and Sikkim during the next five days. While the rain itself will be light‑to‑moderate, the combo of gusty winds and humidity spikes could disrupt outdoor work, especially in agriculture.

Farmers in the Gangetic plains are watching closely. The IMD says the rain could help replenish soil moisture ahead of the post‑monsoon sowing window, but excessive wind may damage standing crops. “It’s a fine balance – a little rain is a blessing, too much wind is a curse,” said an unnamed local agronomist in Patna.

Northeast India – Assam, Meghalaya, and the Seven Sisters

Further east, the forecast shifts to “isolated heavy rainfall” across Assam and Meghalaya from September 30 through October 2. The IMD’s models show the system taping into the Bay of Bengal’s residual moisture, fueling brief but intense storms over the hilly terrain.

Authorities in Guwahati have issued a pre‑emptive alert for flash flooding in low‑lying neighborhoods, especially near the Brahmaputra. Meanwhile, the hill stations of Meghalaya are expected to see “moderate” rain that will spruce up the famed living root bridges without causing landslides.

Implications for Daily Life and the Economy

Why should a weekend garden party or a trucking route care about these forecasts? Simple: India’s economy is still riding the tailwinds of a post‑pandemic recovery, and weather remains a wild card.

Transportation corridors in the west, especially the Mumbai‑Goa highway, could see interruptions. Logistic firms are already rerouting trucks to avoid the expected bottlenecks in the Konkan stretch. In the north, the cooler evenings are likely to boost outdoor dining and street‑level retail, giving a modest lift to small‑business revenues.

Agriculture, the backbone of the nation, stands to benefit from the late‑season rain in the northeast and western coast, replenishing reservoirs that feed irrigation canals. Conversely, the heavy downpours in Maharashtra risk waterlogging of paddy fields, a concern echoed by the state’s agriculture department.

What’s Next? Monitoring the Next Wave

The IMD has promised daily updates through its official portal and mobile app. Meteorologists will keep an eye on the low‑pressure system forming over the Bay of Bengal, which could swing back toward the east coast by early October.

For the average citizen, the best bet is to keep an eye on local TV bulletins, especially between 6 pm and 8 pm when the department releases short‑term warnings. And, as always, an umbrella never hurts – even in a city that’s just saying goodbye to the monsoon.