August is the hottest month in Sliema with an average temperature of 27°C (80°F) and the coldest is January at 13°C (55°F). The wettest month is December with an average of 110mm of rain. The best month to swim in the sea is in March when the average sea temperature is 29°C (84°F).
 
                     
                     
                     
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Sunrise 06:23
 
                                    Sunset 17:07
 
                                    Sunrise 06:23
 
                                        Sunset 17:07
