Pick what you want the weather to do, and see which travel destinations deliver it this month. Built on ERA5 climate averages — what December is normally like, not what happens next week. Weather only: what to do there is up to you.
Warm enough for shirtsleeves, without the punishing heat.
Top this month: Sydney, Australia
Genuinely hot, stopping short of dangerous.
Top this month: Bangkok, Thailand
Reliably dry, and warm enough to enjoy it.
Top this month: Hong Kong, Hong Kong
The most sunshine you can get this month.
Top this month: Sydney, Australia
Comfortable for walking all day — neither hot nor cold.
Top this month: Hong Kong, Hong Kong
An escape from the heat, without needing a coat.
Top this month: Hong Kong, Hong Kong