# Low Pressure System Near Sri Lanka Expected to Strengthen as Rain Continues

- Link: https://www.weather.lk/low-pressure-system-near-sri-lanka-expected-to-strengthen-as-rain-continues/
- Published: 2026-09-21T14:48:36+05:30
- Author: Weather LK

A low-pressure area currently located over the **Andaman Sea region of the Bay of
Bengal, northeast of Sri Lanka**, is expected to strengthen into a **depression 
within the next 24 hours**, according to the Department of Meteorology.

The system is **not expected to directly affect Sri Lanka**. However, its associated
wind flow is likely to keep rainy weather over parts of the country, with the **
southwestern regions** expected to see the most persistent conditions.

For **tomorrow, 22 September**, showers or thundershowers are forecast at times 
across the **Western, Sabaragamuwa, Central and North-Western provinces**, as well
as the **Galle and Matara districts**. Some locations could receive **around 100
mm of rain or more**.

![](https://www.weather.lk/wp-content/uploads/2026/09/Heavy-Rain-and-Rough-Sea-Warnings-
Issued-as-Bay-of-Bengal-System-Strengthens.jpg)

Several spells of showers are also expected in the **North-Central Province and 
Mannar District**. Meanwhile, showers or thundershowers may occur at several places
in the **Uva Province and in the Batticaloa and Ampara districts after 2.00 p.m.**

Along with the rain, **strong winds of around 40–50 km/h** could occur at times 
over the western slopes of the Central Hills, North-Central and North-Western provinces,
as well as the **Trincomalee, Hambantota and Matale districts**.

The public is advised to remain cautious during thundershowers, particularly because**
temporary localized strong winds and lightning** may occur. People in affected areas
should take appropriate safety precautions and stay updated with the latest weather
information from the Department of Meteorology.