The best time to visit Mongla is during the dry season, from October to March, when the weather is most pleasant and activities are readily available.
During these months, you'll experience cooler temperatures and lower humidity, making it much more comfortable for exploring the Sundarbans mangrove forest, which is the primary draw of Mongla. The rivers are calmer, which is ideal for boat trips and wildlife spotting. This period is particularly good for couples or families looking for an adventure, as the conditions are superb for extended excursions into the forest.
The monsoon season, from June to September, brings heavy rainfall and high humidity, which can make travel and forest exploration more challenging.