Tay Ho (West Lake) in January

October through April gives you Tay Ho at its absolute best. The weather cooperates, the lake reflects clear skies, and those legendary sunsets actually happen instead of getting swallowed by summer haze. December and January bring a crisp coolness that makes lakeside walks genuinely pleasant – temperatures hover around 15-20°C, perfect for the outdoor cafe culture that defines this area. March and April warm up nicely but haven't hit the brutal summer heat yet. Avoid May through September unless you enjoy sweating through your shirt while sipping coffee. The summer rains also turn the lake murky and limit outdoor dining options. Here's the insider timing: visit during Tet (Vietnamese New Year) if you want to see how locals celebrate, but book accommodation well in advance. The expat crowd mostly clears out, giving you a more authentic neighborhood feel.