Destinations with changing temperatures can make packing difficult. The easiest solution is usually not more clothing, but clothing that works in layers.
Start with a comfortable base
Choose lightweight tops that can be worn alone in warmer conditions and under another layer when temperatures fall.
Add a flexible mid-layer
A sweater, fleece or similar layer can provide warmth without the bulk of a second heavy coat. Choose something that works with several outfits.
Finish with weather protection
Depending on the forecast, a lightweight wind- or rain-resistant outer layer may be more useful than a very heavy jacket. Check the local forecast close to departure and adjust your choices accordingly.
Think about footwear
Comfort and weather suitability matter more than variety. A practical walking pair that handles most of the trip can save significant luggage space.
Keep the layers accessible
If temperatures may change during the travel day, place your mid-layer or outer shell near the top of your bag rather than buried underneath everything else.
Layering creates flexibility while keeping your suitcase lighter and easier to organize.