Science & Tech · Science & Environment · 1 day ago
Northeast monsoon may reach Tamil Nadu around October 17 or 18
Tamil Nadu’s Regional Meteorological Centre says the northeast monsoon may begin in the State around October 17 or 18.
The southwest monsoon is expected to retreat from the south peninsula by October 15, allowing winds to shift direction.
A weather system may form over the southeast Bay of Bengal around October 13, and forecasters are monitoring its path and strength.
If it moves towards land or the Tamil Nadu coast, it could help bring the wind shift and monsoon onset sooner.
The system is not expected to strengthen beyond a low-pressure area, according to current weather models.
Temperatures are expected to gradually fall across Tamil Nadu after October 16, though some areas may remain hotter than usual before then.
Light to moderate rain may continue in south Tamil Nadu until October 16.
The monsoon is awaited to ease rainfall shortages and replenish dwindling water resources.
The Regional Meteorological Centre says the northeast monsoon may set in over Tamil Nadu around October 17 or 18.
A weather system may develop in the Andaman Sea around October 11 and help form a low-pressure area over the southeast Bay of Bengal around October 13.
The Southwest monsoon is expected to retreat completely from the south peninsula by October 15.
The RMC expects temperatures across Tamil Nadu to gradually fall after October 16 as moisture and cloud cover increase.
Light to moderate rain may continue over south Tamil Nadu until October 16.
- Who
- The Regional Meteorological Centre (RMC) issued the forecast.
- What
- The northeast monsoon may set in over Tamil Nadu around October 17 or 18.
- When
- Around October 17 or 18, 2026.
- Where
- Tamil Nadu, with a possible weather system developing over the Andaman Sea and southeast Bay of Bengal.
- Why
- A developing weather system and a reversal of wind patterns could help bring the monsoon.
This story does not have two clearly opposing sides.
If it moves towards land or the Tamil Nadu coast, it will help enhance conditions for a reversal of wind pattern to northeasterlies, potentially accelerating the onset of the monsoon
An upper-air cyclonic circulation may emerge in the Andaman Sea.
The circulation may influence a low-pressure area to form over the southeast Bay of Bengal.
The Southwest monsoon is expected to retreat completely from the south peninsula.
The RMC expects temperatures across Tamil Nadu to gradually fall.
The northeast monsoon may set in over Tamil Nadu.
- Forecast onset
- Around October 17 or 18
- Possible circulation
- Andaman Sea, around October 11
- Possible low-pressure area
- Southeast Bay of Bengal, around October 13
- Southwest monsoon retreat
- Expected by October 15
- Rainfall forecast
- Light to moderate rain over south Tamil Nadu until October 16
Sources
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