Deli Serdang Regency has a humid tropical climate with two seasonal patterns — a rainy season and a dry season — and air temperatures that stay warm throughout the year. Its position on Sumatra's east coast means the area is shaped by monsoon winds and high humidity.
Why climate matters for environmental affairs
- Heavy rainfall raises the risk of flooding and of surface runoff carrying waste and effluent into water bodies. Drainage management and punctual waste collection are therefore critical.
- Long dry spells increase the risk of land fires, reduce river discharge, and worsen air quality.
- High humidity speeds up the decay of organic waste, demanding tighter collection intervals, especially in densely populated areas.
- Coastal areas are vulnerable to sea level rise and saltwater intrusion, which affect the availability of clean water.
Official climate data and early weather warnings for Deli Serdang Regency are published by the Meteorology, Climatology, and Geophysics Agency (BMKG). The Environmental Agency of Deli Serdang Regency uses that information as the basis for waste handling readiness and pollution control during extreme seasons.
The full text of this page is still being prepared from the agency's official documents.
Last updated September 23, 2026