Weather in Sylhet, Sylhet Division
Located in Sylhet Division, Bangladesh, Sylhet is a significant urban centre in the semi-arid to humid subtropical climate zone, at about 24.9°N latitude.
Climate Overview
From June to September, the southwest monsoon delivers 70–80% of Bangladesh's annual rainfall. Tropical depressions in the Bay of Bengal regularly intensify the rains. Like much of Sylhet Division, Sylhet follows the South Asian monsoon calendar: a hot pre-monsoon, a wet monsoon and a drier cool season after October. Summer afternoons can climb above 40°C.
Weather by season in Sylhet
Sylhet's year divides into four broad seasons. The southwest monsoon normally arrives around 10 June. Daytime figures below are typical lowland values for this latitude — hill stations sit markedly cooler.
- Winter (Dec–Feb): days around 26°C, nights around 12°C. Mild, dry and one of the most pleasant times to visit.
- Summer / pre-monsoon (Mar–Jun): days around 35°C, nights around 25°C. Warm and humid, building towards the monsoon.
- Monsoon (Jul–Sep): days around 32°C, nights around 26°C. Frequent rain and high humidity; the wettest part of the year.
- Post-monsoon (Oct–Nov): days around 31°C, nights around 20°C. Skies clear and temperatures ease — comfortable and settled.
Today's Weather in Sylhet
The current weather conditions in Sylhet are updated every hour from the ECMWF global model via Open-Meteo. You can see real-time temperature, humidity, wind speed and air quality at the top of this page.
Hourly Forecast
Our hourly forecast for Sylhet covers the next 24 hours with temperature, wind speed and rain probability so you can plan around showers and thunderstorms.
7-Day Weather Forecast for Sylhet
Tomorrow's weather, the day after and the full week ahead for Sylhet are summarised in the 7-day outlook. Rain, cloud cover and wind direction are all shown.
Air Quality in Sylhet
Air quality in Sylhet is measured using the European Air Quality Index, with PM2.5 and PM10 particulate matter readings displayed alongside the live forecast. As a larger city, Sylhet may experience elevated pollution levels during winter months due to temperature inversions and reduced wind.
Quick facts about Sylhet
Sylhet has a population of about 5,26,412; sits at 24.90°N; and is in Bangladesh; its monsoon typically arrives in early June.
Common spellings
The Hindi word for weather, मौसम, is transliterated in many ways: mausam, mosam, mausham, musam, mosum, moshm, mausm. All refer to the same concept — the current weather conditions, today's temperature and the forecast you'll find for Sylhet on this page.
Nearby Cities in Sylhet Division
Explore weather forecasts for other cities in Sylhet Division. See the "More in Sylhet Division" section above, or browse the full list on our states page.