The best time visit is between May to September. The Manali Leh highway is open, so is the Srinagar leh through zojilla pass.
You can go to, 1.Pangong tso lake
2. Nubra Valley
3. the city palaces and 3others on the outskirts
4.hemis monastery is quite good
5.the higesh motorable pass
6. zero gravity road
The weather in March is normally sunny and warm in the daytime, but light frost at night
Winter has a different charm all together, if you want to see real Ladakh with less tourist around then Winter is the best time to visit (From Nov - March).
When the winters start, Ladakh is the best place to visit then. Climate is way too pleasant. But gradually, due to snowfall some places get blocked. This time of the year, you can visit with days being warm and nights being pleasant.