If you are looking for a red Supavalu had a Rioja Faustino VII for â‚¬9 last weekend, very nice. Any of the Riojas are good but Faustino are the best, they go from VII (7) down to a I (1) but that's very hard to come by (and afford !) Other good reds are Merlot, Cabernet Sauvignon, Shiraz or CorbiÃ¨res.
Go for French or Spanish reds, German or Italian whites. The same grape grown in another country is not always the same taste. But as has been said Prosecco is good for this time of year. It is sparkling but a dry white, where as the other suggestions are sweeter.