---
title: "October Heat: Retreating Monsoon Phenomenon | Model Diplomat"
description: "October Heat refers to the oppressive humidity and high temperatures in northern India during October, a crucial topic for UPSC GS1 geography."
url: "https://modeldiplomat.com/learn/glossary/october-heat"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- October Heat is the oppressive combination of high temperature and humidity experienced across the northern Indian plains during October as the southwest monsoon retreats.
- What causes October Heat in northern India?
- How does October Heat differ from the loo?
- Why is October Heat relevant to UPSC GS1 geography?
- Is climate change affecting October Heat?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

October Heat is the oppressive combination of high temperature and humidity experienced across the northern Indian plains during October as the southwest monsoon retreats.

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Example

In October 2021, the India Meteorological Department in New Delhi recorded persistently humid, high-temperature conditions across Lucknow and Patna as the delayed southwest monsoon withdrawal prolonged classic October Heat over the Gangetic plains.

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