# SRI LANKA WEATHER FORECAST FOR 13 SEPTEMBER 2026

- Link: https://www.weather.lk/sri-lanka-weather-forecast-for-13-september-2026/
- Published: 2026-09-12T19:16:00+05:30
- Author: WeatherLK

**Sri Lanka Weather Forecast for 13 September 2026**

Weather conditions across Sri Lanka are expected to become more favorable for afternoon
thundershowers over the next few days, particularly in the Northern and Eastern 
provinces. The forecast for Sunday, 13 September, indicates increased rainfall activity
across many parts of the island, with several areas likely to experience showers
or thundershowers after 2.00 p.m.

Showers or thundershowers will occur at several places in the Northern, North-Central,
Uva, Eastern, Central and Sabaragamuwa provinces, as well as in the Hambantota district.
Fairly heavy rainfall exceeding 75 mm is possible at some locations within these
areas. Residents and commuters should remain alert to changing weather conditions,
particularly during the afternoon and evening when thunderstorms are more likely.

Meanwhile, several spells of showers are expected in the Western and North-Western
provinces and in the Galle and Matara districts. Although rainfall may vary from
place to place, the overall weather pattern indicates an increase in afternoon rainfall
activity across the country.

The public is advised to take adequate precautions during thundershowers, as temporary
localized strong winds and lightning may occur. Outdoor activities should be planned
carefully when thunderstorms develop.

![](https://meteo.gov.lk/gifs/analysis1.gif?t=1789220236195)

**Sea Weather Forecast**

Showers may occur at several places in the sea areas extending from Puttalam to 
Matara via Colombo and Galle. During the evening or night, showers or thundershowers
may also occur in the sea areas from Mullaittivu to Batticaloa via Trincomalee.

South-westerly winds are expected around the island, with speeds of 30–40 kmph. 
Wind speeds may increase up to 50–60 kmph at times in the sea areas from Hambantota
to Pottuvil. Winds may also reach up to 50 kmph in the sea areas from Chilaw to 
Kankasanthurai via Mannar.

Sea conditions will be rough at times from Hambantota to Pottuvil and fairly rough
from Chilaw to Kankasanthurai via Mannar. Wave heights may increase to around 2.0–
3.0 metres in the sea areas from Chilaw to Pottuvil via Galle, Matara and Hambantota.

There is also a possibility of seawater inundation in near-shore areas from Beruwala
to Matara via Galle. Naval and fishing communities operating in these areas are 
urged to remain vigilant and closely follow the latest weather updates.

![](https://meteo.gov.lk/gifs/marine1.gif?t=1789220360700)