---
title: "Arabian Sea branch — Definition & Meaning | Model Diplomat"
description: "The Arabian Sea branch is the western current of India's summer monsoon, crucial for delivering 75-80% of its annual rainfall."
url: "https://modeldiplomat.com/learn/glossary/arabian-sea-branch"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Arabian Sea branch is the western current of the south-west summer monsoon that strikes peninsular India's west coast, splitting further into three sub-streams.
- Why does the Arabian Sea branch leave Rajasthan and the Deccan dry?
- Into how many sub-streams does the Arabian Sea branch divide?
- When does the Arabian Sea branch normally arrive over India?
- How does the Arabian Sea branch differ from the Bay of Bengal branch?

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

The Arabian Sea branch is the western current of the south-west summer monsoon that strikes peninsular India's west coast, splitting further into three sub-streams.

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In June 2023, the IMD recorded the Arabian Sea branch's onset over Kerala on 8 June, a week-long delay attributed to a developing El Niño weakening the monsoon's western arm.

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