Archive · 2 Nov 2025
Chennai November Weather: Dry Start, Then La Niña Impact, and a New System
Even though November starts warm and dry in Chennai, it might rain more than usual later in the month.
This is because of something called La Niña, which usually makes southern India drier.
But Chennai might get wetter than other parts of Tamil Nadu.
October had a lot of rain, making it one of the wettest Octobers in years.
Also, a new storm is forming near the Andaman Sea that could affect the coast.
For now, temperatures will be warm, but they might cool down a bit in the second week of November.
In other parts of Bengal, it rained heavily but is expected to become dry.
Chennai is expected to have a dry start to November, with temperatures ranging from 34°C to 26°C.
Despite a dry beginning, above-normal rainfall is predicted for Chennai and its northern suburbs later in the month.
The La Niña phenomenon is influencing the weather, potentially causing below-normal rainfall initially over Tamil Nadu.
October saw significantly above-normal rainfall in Chennai, marking it as one of the wettest Octobers on record.
A new cyclonic circulation is forming near the Andaman Sea, which could influence weather patterns along the east coast.
- Who
- India Meteorological Department (IMD)
- What
- November weather forecast predicting a dry start followed by potential above-normal rainfall in Chennai due to La Niña's influence, with a new weather system forming near the Bay of Bengal.
- When
- Early November 2025, with predictions for the entire month and its impact on rainfall patterns.
- Where
- Chennai and surrounding northern suburbs, with broader predictions for Tamil Nadu and the southeast peninsula.
- Why
- The weather patterns are influenced by the La Niña phenomenon, which typically reduces rainfall over southern India, and a new cyclonic circulation forming over the Bay of Bengal.
- October Rainfall
- 29% above normal
- November Forecast for Chennai
- Above-normal rainfall expected later in the month
- November Forecast for Tamil Nadu
- Below-average rainfall predicted initially
- La Niña Influence
- Expected to persist through November and December 2025, suppressing rainfall over Tamil Nadu
- October Rainfall Record
- Third highest since 2001 for the region
- Chennai Temperatures (Early November)
- Daytime highs between 34°C and 26°C