Luggage and bags:
When you visit the Dachau concentration camp, don't carry much luggage because the camp is huge and you may get tired.
Clothing/Shoes/Weather Gear: I visited the KZ on a hot summer day. It was around 35 ?C, which is really very hot for the German parametres. So, you should wear light clothes in summer. However, I'd recommend you shouldn't wear too short clothes as a sign of respect towards the many people who died there.
Photo Equipment: You don't need a camera with high performances, since you will mostly take photos outside.
Miscellaneous: On hot days, bring something to drink (not necessarily to eat) or you will get dehydrated!
There is no special rainy season
Avg. Temp. in Spring: max.: 8 – 18°C ( 47 - 64°F ); min: 0 - 7°C ( 32 - 45°F )
Avg. Temp. in Summer: max.: 20 – 22°C ( 68 - 72°F ); min: 10 - 12°C ( 50 - 53°F )
Avg. Temp. in Autumn: max.: 6 – 18°C ( 63 - 64°F); min: 0 - 8°C ( 32 – 47°F )
Avg. Temp. in Winter: max.: 2 – 4°C ( 36 - 39°F); min: -3 - -1°C ( 27 - 30°F )