Forecasts for towns across the county say the sun will be out all day (Saturday, June 21), with very high UV levels and very high pollen counts.
On Sunday, it will be slightly cooler as temperatures drop to about 24°C.
If you’re planning a family fun day out at the beach, which one should you choose and which one should you avoid? We have picked a few of the best beaches in Sussex in this gallery below.

13. West Wittering beach
This might be one to avoid if you're planning on a visit. It's actually a brilliant beach but it's so popular that it often 'sells out' of car parking spaces. The beach has previously warned people not to turn up without a ticket. Photo: Steve Robards