We went from 28.6.08 to 11.7.08 to the Baltics and the weather was hot some days, warm most days, but we did have a couple of day of rain, although still fairly warm.
We were on the 28th July to 9th August to the Baltic's (on NCL Jewel). The first few days were hot and sunny, we had showers in Stockholm, Helsinki & St Petersburg but, it wasn't too cold. Then hot again in Tallinn, a thunderstorm one night & force 9 gale the 2nd sea day home!! So a real mixture of weather, similar to UK!