Ozgrade3,
The cells are usually spaced enough to get around them without too much trouble
1. Divert early rather than when you are on top of them.
2. There are often narrow, tubular cells that don't paint at all well on the radar and can give a nasty wake up if you are unlucky enough to fly into one
3. Winds are usually light, however usually best practice to divert upwind
to avaid anvil etc
4. ISA deviation can change quite significantly in a short time/distance as you near a cell eg from ISA + 5 to ISA + 17. This can cause grief if you are at/near the max altitude for the aircraft as you are suddenly 1000' or so above it!
Safe Flying