The India Meteorological Department (IMD) has issued an updated weather forecast as India is set to experience diverse weather conditions this week. Southern coastal states will see heavy rainfall due to a developing low-pressure system in the Bay of Bengal, while northern and eastern regions are expected to experience dense fog and cold wave conditions.
Weather Systems and Associated Rainfall
Low-Pressure Area in the Bay of Bengal: A low-pressure area has formed over the southeast Bay of Bengal and adjoining east Equatorial Indian Ocean as of December 7. It is likely to move west-northwestwards and become more marked in the next 24 hours. The system is expected to reach the southwest Bay of Bengal off the Sri Lanka-Tamil Nadu coasts by December 11.
Western Disturbance and Northern Weather Conditions
A fresh Western Disturbance is likely to cause light to moderate rain/snowfall over the Western Himalayan region from December 8–11. Isolated light rainfall is also expected in Punjab, Haryana, and Chandigarh on December 8–9.
Region-wise Rainfall Forecast
The upcoming weather systems are expected to bring significant rainfall across various regions of India. Coastal and southern states, including Tamil Nadu, Puducherry, and Kerala, are likely to experience moderate to heavy rainfall in the coming days due to the influence of a low-pressure system over the Bay of Bengal. Here’s a detailed region-wise forecast to help you stay prepared.
| Region | Expected Rainfall | Key Dates |
| Tamil Nadu, Puducherry & Karaikal | Light to moderate rain; heavy rain in isolated places | Dec 10–13 (very heavy on Dec 12) |
| Coastal Andhra Pradesh & Yanam | Light to moderate rain; isolated heavy rain | Dec 11–12 |
| Kerala & Mahe | Light to moderate rain; isolated heavy rain | Dec 11–13 |
Fishermen are advised to avoid venturing into the Southeast Bay of Bengal from December 8 to 11, the Southwest Bay of Bengal from December 9 to 12, and the West-central Bay of Bengal on December 11 and 12 due to rough sea conditions.
Fog and Cold Wave Alerts
As winter intensifies, parts of India are set to experience dense fog and biting cold wave conditions in the coming days. These weather phenomena are expected to impact daily life across northern, eastern, and northeastern regions, bringing reduced visibility and sharp drops in temperatures. Here’s a closer look at the regions and dates affected.
| Region | Weather Condition | Key Dates |
| Assam, Meghalaya, Nagaland, Manipur, Mizoram, Tripura | Dense fog during late night/early mornings | Till Dec 9 |
| Punjab, Haryana, Chandigarh, Jharkhand | Dense fog | Dec 8–10 |
| Uttar Pradesh | Dense fog | Dec 9–12 |
| North Rajasthan | Cold wave conditions in isolated pockets | Dec 9–13 |
Temperature Trends Across India
India is witnessing diverse temperature patterns this week, with noticeable variations across regions. From chilly conditions in the northwest to warmer-than-usual nights in parts of the south and central regions, the weather variation highlights the contrasting climatic influences at play. Here’s a detailed look at the current and forecasted temperature trends across the country.
Current Temperature Overview: The lowest temperature, 4.5°C, was recorded at Hissar, Haryana. Northwest India ranges between 5–10°C, the Indo-Gangetic Plains and Eastern India at 10–15°C, and Central India, Gujarat, and Maharashtra at 15–20°C.
Forecasted Changes
| Region | Expected Temperature Trend | Duration |
| Northwest India (except Rajasthan) | Gradual rise by 2–3°C followed by a fall | Next 2 days, then fall |
| Rajasthan | Gradual fall by 2–3°C | Next 4–5 days |
| Maharashtra | Gradual fall by 3–4°C | Next 4 days |
| Gujarat | Gradual fall by 2–4°C; no change thereafter | Next 2 days |
Delhi/NCR Weather Forecast (December 8–10)
Delhi and the National Capital Region (NCR) are set to experience varying weather conditions over the next few days, with predominantly clear skies, light winds, and occurrences of smog and fog during the mornings and evenings. Temperatures are expected to remain steady, with occasional shifts in wind patterns bringing a mix of cool and misty conditions.
| Date | Sky Condition | Wind Direction and Speed | Special Features |
| Dec 8 | Partly cloudy | Southeast (<10 kmph morning, <16 kmph afternoon) | Shallow fog in morning |
| Dec 9 | Mainly clear | Southeast (<8 kmph morning, variable 4–6 kmph afternoon) | Smog/moderate fog morning |
| Dec 10 | Mainly clear | Variable (<4 kmph morning, Northwest <10 kmph afternoon) | Smog/shallow fog morning |
The upcoming week brings varied weather conditions across India, from heavy rainfall in southern coastal regions to dense fog in the north and east. With a potential cyclonic system developing over the Bay of Bengal, Tamil Nadu and adjacent states are likely to experience significant rainfall. Meanwhile, cold wave conditions and dense fog will impact northern and eastern India. Citizens and fishermen are urged to stay updated with IMD alerts for the latest developments!