# WEATHER FORECAST FOR SEA AREAS 21 December 2025

- Link: https://www.weather.lk/weather-forecast-for-sea-areas-21-december-2025/
- Published: 2025-12-20T17:39:31+05:30
- Author: Weather LK

## Marine Weather Forecast for Sri Lanka: Rough Seas and Strong Winds Expected Over Next 24 Hours

Issued at 2.00 p.m. on 20 December 2025
The Department of Meteorology has issued
an advisory for sea areas around Sri Lanka, warning of **rough sea conditions and
strong north-easterly winds** during the next 24 hours.

Showers are expected at several locations in the **sea areas off the coast from 
Batticaloa to Galle via Hambantota**, which may occasionally reduce visibility for
marine activities.

Winds across the surrounding sea areas will be **north-easterly**, with average 
wind speeds of **30–40 kmph**. However, wind speeds may **increase to 50–55 kmph
at times**, particularly in the **sea areas from Colombo to Mannar via Puttalam**
and from **Hambantota to Batticaloa**.

As a result of the strong winds, the **sea areas off the coast extending from Colombo
to Mannar via Puttalam and from Hambantota to Batticaloa** are expected to be **
rough at times**. In contrast, the remaining sea areas around the island will experience**
moderate sea conditions**.

Fishermen and maritime operators are advised to **exercise caution** and remain 
attentive to future updates issued by the Department of Meteorology.

![](https://www.weather.lk/wp-content/uploads/2025/12/Wave-Height-Wind_Surface_WW3ENS-
Global_20251221T0730000530-1024x463.jpg)