The months May, June, September and October have nice weather with a good average temperature. Hot season / summer is in June, July, August and September. Kabul has dry periods in May, June, July, August, September, October, November and December. On average, the warmest month is August.
BAKED STUFFED PEPPERS. Remove tops and seeds from peppers; wash inside and drain. ... peppers upright in greased baking dish. Add 1/2 cup water in dish. Cover; bake at 400 degrees for 1 hour.
Re: heating through stuffed peppers timing. I usually saute what will flavor the filling, add the filling and bake until soft in liquid which takes longer than 30 minutes. I skip the step you have of cooking the peppers separately without filling. If you want, you can make the whole dish in advance and then just warm it up. With a lid or foil covering, that should only take about 20 minutes in a moderate oven. They can be eaten at room temp or cold too.