The climate in Bangladesh varies significantly by season. October to February is the cool, dry season — the ideal window for Bangladesh holiday— with warm days, clear skies, and manageable humidity. The monsoon runs from June to September, bringing heavy rainfall and occasional flooding that makes travel difficult. The Bangladeshi Taka (BDT) is the local currency; carry some cash for markets, rickshaws, and tips, as smaller establishments do not accept cards. Bottled water is recommended throughout your trip. Tipping for guides, drivers, and boat crew is customary and greatly appreciated, though entirely at your discretion.