Several parts of Tamil Nadu are likely to experience rainfall over the next five days as active weather systems over the Arabian Sea and the Bay of Bengal influence regional conditions, the India Meteorological Department (IMD) said on Monday.

According to the IMD, coastal districts and Puducherry are expected to witness intermittent showers in the early part of the forecast period, while most interior areas may see limited rainfall initially. The rainfall activity is being fuelled by low-pressure formations over nearby sea regions, which are drawing moisture towards the coast.

Moderate rainfall is likely along coastal Tamil Nadu and Puducherry on Monday and Tuesday. Interior districts are expected to remain largely dry during this period, although cooler temperatures may prevail due to reduced solar heating.

From January 7 onwards, rainfall activity is expected to pick up in parts of the state, with scattered moderate showers forecast. By January 8, both coastal and inland regions may receive rainfall, indicating a broader spread of precipitation across Tamil Nadu.

The IMD has further indicated that on January 10, moderate rainfall could occur across southern and northern districts, suggesting that the evolving weather system may impact a wider area.

Alongside rainfall, a gradual dip in temperatures is anticipated. Minimum temperatures across many regions are likely to drop by 2 to 3 degrees Celsius over the next couple of days, bringing cooler early morning conditions, especially in interior and low-lying areas.

For Chennai and surrounding suburbs, the forecast points to cloudy skies with chances of light mist or fog during morning hours, which could affect visibility. Daytime temperatures are also expected to remain on the lower side, with subdued sunlight contributing to a cooler feel.

The IMD has urged residents, particularly those living in coastal and vulnerable areas, to stay updated with weather advisories, as changing conditions could disrupt travel and daily routines. The department said it continues to closely track the weather systems and will issue updates as required.