The average yearly temperature is 22–23 °C (72–73 °F) during the day and 15 °C (59 °F) at night. In the coldest month – January – the temperature ranges from 12 to 20 °C (54 to 68 °F) during the day and 7 to 12 °C (45 to 54 °F) at night. In the warmest month – August – the temperature ranges from 28 to 34 °C (82 to 93 °F) during the day and 19 to 24 °C (66 to 75 °F) at night. Generally – summer's/holiday season lasts to 8 months, starting from around mid-April with temperatures 19–23 °C (66–73 °F) during the day and 13–14 °C (55–57 °F) at night, ending in November with temperatures 17–23 °C (63–73 °F) during the day and 11–20 °C (52–68 °F) at night, although also in the remaining 4 months temperatures sometimes reach 20 °C (68 °F). Amongst all capitals in the continent of Europe, Valletta – the capital of Malta has the warmest winters, with average temperatures of 15–16 °C (59–61 °F) during the day and 9–10 °C (48–50 °F) at night in the period January–February. In March and December average temperatures is around 17 °C (63 °F) during the day and 11 °C (52 °F) at night. Large fluctuations in temperature are rare. Also, Malta is one of the few places in Europe which are "green" all year round.

Average annual temperature of the sea is 20 °C (68 °F) (the highest in the continent of Europe), from 16 °C (61 °F) in January to 26 °C (79 °F) in August. In the entire 6 months – from June to November – the average sea temperature exceeds 21 °C (70 °F)

Sunshine hours total around 3,000 per year (one of the highest results in Europe), from an average above five hours of sunshine per day in December to an average above 12 hours in July. This is about double that of cities in the northern half of Europe, for comparison: London – 1,461, however in winter up to some times more sunshine, for comparison: London has 37 hours while Malta has 155 or 164 (depending on the sources) hours of sunshine in December.