# WEATHER FORECAST FOR SEA AREAS 20 December 2025

- Link: https://www.weather.lk/weather-forecast-for-sea-areas-20-december-2025/
- Published: 2025-12-20T08:48:10+05:30
- Author: Weather LK

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

Issued at 05.30 a.m. on 20 December 2025

The Department of Meteorology has issued a weather advisory for sea areas around
Sri Lanka, warning of rough sea conditions, strong winds, and thundershowers during
the next 24 hours.

Showers are expected at several locations in the **sea areas off the coast from 
Batticaloa to Hambantota via Pottuvil**. In addition, **showers or thundershowers**
may occur at a few places in the **sea areas from Colombo to Matara via Galle**,
particularly **during the evening or night**.

Winds over the surrounding sea areas will be **north-easterly**, with wind speeds
ranging between **30 and 40 kmph**. However, wind speeds may **increase up to 45–
50 kmph at times**, especially in the **sea areas from Colombo to Mannar via Puttalam**
and from **Hambantota to Pottuvil**.

Sea conditions are expected to be **fairly rough at times** in the affected coastal
waters extending from **Colombo to Mannar via Puttalam** and from **Hambantota to
Pottuvil**. Elsewhere around the island, sea conditions will remain **moderate**.

The Meteorology Department further warns that **temporarily strong gusty winds and
very rough seas** may occur in association with **thundershowers**, posing risks
to small and medium-sized fishing vessels.

Fishermen and naval communities are advised to remain **vigilant** and take **necessary
safety precautions** before venturing into the sea.

![](https://www.weather.lk/wp-content/uploads/2025/12/Wave-Height-Wind_Surface_MFWAM-
Global_20251220T0530000530-1024x463.jpg)