I visited Manali in May 09 with my husband and 2 children. The weather was lovely and chilly in the evenings. Manali has lots to offer like paragliding, skiing, rafting. A visit to Rohtang Pass is a must . It is closed for some time so one must check.
Lovely place, lots of small restaurents and a vast variety of food.
The only hill station in India with the maximum number of hotels.
The day time is sunny and sunscreen is a must.