A cloudy day with some possible showers is expected around the UK's venues for today's Olympic action.
Some light rain has been forecast in and around London early on in the day, but it should gradually brighten up.
The sun will reach a peak of 22 degrees in the South at around 6pm.
For the sailing in Weymouth, it will be cloudy with outbreaks of rain throughout the morning. It should become dry in the afternoon with sunny spells.
There could be some isolated showers, while the wind is blowing westerly at around 6pm.