It usually is but based on the current weather conditions in J&K it wouldn't be advisable as it's mostly off roading and off roading for so long in rain is not an experience that everyone's up for.
Spiti can be visited all around the year if you are ready to accept the weather and road challenges and may be rain too. All you need to carry is love for travelling and exploring in any way :)
That's true! I have been to ladakh in july as well and been through with many bad roads and weather. All i need is second opinion before visit any plan to make sure that the weather and road conditions are not worse, because it might take 2 3 days extra and that will cost someone's work.
I don't consider it as a good idea because, this is the monsoon months when monsoon is in full swing in Kinnaur and it is better to avoid this time as the area is prone to landslides. However, Spiti valley itself remains fine at this time.
Yes, Spiti, like Ladakh, is a dry cold desert that sees close to no rains, even during the monsoon season. However, the approach roads from the Shimla side see quite a bit of rain leading to patchy road conditions. You will also need to cross some water crossings especially at the stretch between Batal and Gramphoo.
The valley shrouds itself in beautiful autumn colours of brown and burnt orange, that make the place even more stunning. The days are pleasant and the nights cool, perfect to enjoy the charm of the valley.
Duration of monsoon: Months of July till September are considered to be the monsoon months in Spiti. Average temperature: The average temperatures range between 10°C (daytime) to 4°C (night).