The best time to book a flight to Sylhet with Biman Bangladesh is 84 days before departure. On average, fares are higher if you book on the same day as departure.
For Economy class flights, the cheapest month to fly this route is October. The most expensive months are May and April.
In terms of precipitation, rainfall in Sylhet ranges from 8.0 - 812.0 inches per month. June is typically the wettest month, when rainfall can reach 812.0 mm. December is typically the driest time to visit Sylhet when rainfall is around 8.0 mm.
If weather is an important factor for your trip to Sylhet, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 18.0 C).
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