# SRI LANKA WEATHER FORECAST FOR TOMORROW, 21 OCTOBER 2026

- Link: https://www.weather.lk/sri-lanka-weather-forecast-for-tomorrow-21-october-2026/
- Published: 2026-10-20T15:15:10+05:30
- Author: WeatherLK

Sri Lanka is expected to experience intensified rainy weather on Wednesday, 21 October
2026, due to a low-level atmospheric disturbance prevailing near the island, warns
of heavy rainfall exceeding 100 mm in some areas, along with thunderstorms, strong
winds and rough sea conditions.

Showers or thundershowers are expected at times in the Western, Sabaragamuwa, North
Western and Northern provinces, as well as in the Anuradhapura District. Some locations
in these areas could receive heavy rainfall above 100 mm, raising concerns about
localized flooding and other weather-related disruptions.

In other parts of the island, showers or thundershowers are expected after 1.00 
p.m. The public is advised to remain alert to changing weather conditions and take
adequate precautions against temporary localized strong winds and lightning during
thunderstorms.

Misty conditions may develop in some areas of the Central and Uva provinces during
the early morning hours. Motorists are encouraged to drive carefully when visibility
is reduced.

![](https://meteo.gov.lk/gifs/analysis1.gif?t=1792489212878)

**SEA AREA FORECAST**

The atmospheric disturbance is also expected to enhance rainy conditions in the 
sea areas surrounding Sri Lanka from the evening of 20 October. Showers or thundershowers
may occur at times in sea areas extending from Mullaitivu to Galle via Kankasanthurai,
Puttalam and Colombo.

Winds over the surrounding sea areas are expected to be westerly to southwesterly,
with speeds ranging from 25 to 35 kmph. Sea conditions around the island may be 
slight to moderate under the forecast conditions.

However, temporarily strong gusty winds of 60–70 kmph and very rough seas may develop
during thundershowers. Fishermen, naval personnel and others engaged in maritime
activities are advised to exercise caution and remain alert to sudden changes in
weather and sea conditions.

With the atmospheric disturbance expected to strengthen rainy conditions across 
several regions, residents should monitor official weather updates and follow safety
advice from relevant authorities. Extra care is recommended in areas forecast to
receive intense rainfall, particularly during thunderstorms accompanied by lightning
and strong winds.

![](https://meteo.gov.lk/gifs/marine1.gif?t=1792489301825)