Chiang Mai in December: do I need a jacket?
I keep seeing “pack down.” I need city night vs the mountain, not a ski brochure.
A layer, not a ski bag
| If | Pack | Not |
|---|---|---|
| Nimman / Old City in December | A layer for evening. Days are still warm | A parka as the personality of the trip |
| Doi Inthanon / a dawn viewpoint | More than the city layer. The summit is a different product | Copying a Bangkok packing list onto 2,500 m |
| You run cold | Light fleece + a shell | Waiting to buy a fake North Face on Chang Khlan at 22:00 as the whole plan |
| You only have March | That is smoke, not a jacket. The March air post is the other fork | A down coat as haze protection |
TMD: northern cool season is roughly November–February. Check the week you go. I will not invent tonight’s low.
City or the mountain, and if you actually get cold at 22:00.