Sri Lanka's Department of Meteorology has issued its official weather forecast for September 25, 2026, warning residents across multiple provinces to expect intermittent showers and thundershowers throughout the day. The forecast, issued at 5.30 a.m., covers several key provinces including Western, Sabaragamuwa, Southern, Central, and North-western, urging the public to remain prepared for unsettled weather conditions. Meteorologists have also confirmed that a deep depression currently active over the Bay of Bengal is gradually weakening, with its influence on Sri Lanka's weather expected to diminish as the day progresses.
Bay of Bengal Depression Weakening
The primary weather driver behind the current unsettled conditions across Sri Lanka is a deep depression that formed over the Bay of Bengal in the days leading up to September 25, 2026. According to the Department of Meteorology, this system has begun to weaken and is now classified as a depression rather than a deep depression. While this is positive news for the island nation, meteorologists caution that the transition period still carries the potential for significant rainfall across several provinces.
Weather systems originating over the Bay of Bengal frequently influence Sri Lanka's rainfall patterns, particularly during the inter-monsoon and northeast monsoon seasons. Even as the system weakens, residual moisture and atmospheric instability can continue to trigger localized showers and thundershowers across vulnerable regions. Residents in the affected provinces are advised to stay updated with the latest forecasts issued by the Department of Meteorology throughout the day.
Provinces Expected to Receive Showers
The September 25 weather forecast specifically identifies five provinces where showers or thundershowers are anticipated at various times during the day. These provinces include:
Western Province: As home to the country's commercial capital Colombo, the Western Province is one of the most densely populated regions in Sri Lanka. Residents and commuters in this province should anticipate wet conditions that could disrupt daily routines, traffic flow, and outdoor activities. Carrying an umbrella and allowing extra travel time is strongly recommended.
Sabaragamuwa Province: Known for its lush landscapes, tea estates, and the iconic Sinharaja Forest Reserve, Sabaragamuwa Province is no stranger to heavy rainfall. The hilly terrain in this region can amplify rainfall intensity, and residents in low-lying areas near rivers should remain alert to the possibility of localized flooding.
Southern Province: The Southern Province, which includes popular coastal cities such as Galle and Matara, is also expected to experience intermittent showers. Coastal communities and fishermen are advised to exercise caution, as rough sea conditions may accompany the unsettled weather patterns linked to the weakening depression.
Central Province: The Central Province, encompassing the hill country and the city of Kandy, is expected to see showers as well. Elevated areas in this province are particularly susceptible to mist, reduced visibility, and heavier rainfall due to orographic effects. Travelers navigating mountain roads should exercise heightened caution.
North-western Province: The North-western Province, which includes Kurunegala and Puttalam districts, is also listed among the areas likely to receive showers. Agricultural communities in this province should monitor conditions closely, as unexpected heavy rainfall could affect crop management and farming activities.
Safety Precautions and Public Advisory
During periods of unsettled weather, the Department of Meteorology and relevant government authorities consistently urge the public to take necessary precautions to ensure personal safety. Residents living near rivers, streams, and low-lying areas should remain vigilant for potential flash flooding, particularly when heavy showers are concentrated over short periods. Landslide-prone areas in the Central and Sabaragamuwa provinces warrant extra attention during sustained rainfall events.
Motorists are advised to drive carefully on wet roads, reduce speed, and maintain safe distances from other vehicles. Pedestrians should avoid sheltering under tall trees during thundershowers, as lightning strikes pose a genuine risk during active thunderstorm activity. Outdoor events and activities scheduled for September 25 in the affected provinces may need to be reconsidered or rescheduled depending on actual weather developments throughout the day.
Gradual Improvement Expected
Despite the unsettled conditions forecast for September 25, 2026, there is a silver lining for residents across the affected provinces. The Department of Meteorology has confirmed that as the Bay of Bengal depression continues to weaken, its impact on Sri Lanka's weather is expected to gradually decrease from today onward. This suggests that weather conditions may begin to stabilize in the coming days, bringing relief to communities that have experienced prolonged wet weather associated with the system.
The public is encouraged to regularly check official updates from the Department of Meteorology through its website and authorized communication channels for the most accurate and timely weather information. Staying informed and prepared remains the best approach to safely navigating Sri Lanka's dynamic and sometimes unpredictable weather patterns during the transitional seasons.