The Maltese islands climate is typically Mediterranean with mild wet winters and warm to hot summers. The islands are quite humid with an average humidity of about 79% in winter and 71% in summer.
The average annual temperature is 18–19 °C (64–66 °F) making it one of the highest results in Europe; around 22 °C (72 °F) during the day and 15 °C (59 °F) at night. In January, the coldest month, the temperature ranges from 12 to 20 °C (54 to 68 °F) during the day and 7 to 15 °C (45 to 59 °F) at night. In August, the warmest month, 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. Large fluctuations in temperature are rare.
The islands are generally quite windy. The most common winds are the cool north-westerly, the dry north-easterly and the hot humid south-easterly.
Visibility is usually quite good around the islands and on certain days the Island of Sicily can be seen from certain parts of Malta and Gozo. Sea temperatures are quite mild all year round, with the lowest average point in February being around 14°C, and the highest average in August being around 25°C.
Seasons and what to wear
July and August are the hottest months while the first rain after summer usually starts in around mid-September. The first rains in September or October after summer are usually the worst and heavy rain and storms can hit the islands but only on few days. When this happens, many parts of the islands get flooded especially towns that are built on valleys. However, the sun doesn’t take long to return shining on the islands. September and October are pleasant times to visit the islands as the weather is still warm with a cool breeze in the evenings. Up to the end of October, one will still see people wearing summer shirts and the weather is normally enjoyable. Most locals usually start wearing long sleeves beginning of November. Light jackets are usually enough for the month of December till it starts getting cooler around Christmas when people start wearing warmer jackets or coats. Even though during this period it rains more frequently, heavy rain is rare.
January and February are the coolest months and the high humidity of the islands makes it worse. Houses in Malta and Gozo don’t have any central heating and so they tend to be quite cold inside. Snow never falls on the islands but hail does, though rarely. During this time, the islands still have a daily average of about 6 hours of sunshine. Winter on the islands is beautiful for those that like quiet surroundings especially on Gozo which has a certain charm in winter. During this time and spring the islands are most green and offer many scenic views. Rainfall days are only occasional. Spring is a wonderful time when it’s neither too hot nor cold and makes the islands ideal for activities like hiking, cycling and walking. If it gets too hot one is never too far away from a beach which allows you to cool off and unwind. In April some people start swimming though the sea can still be quite chilly while wildflowers start blooming. During this month, many locals start wearing t-shirts again or else light long sleeve tops. May is usually quite warm and sunny while the sea is the cleanest at this time of year. It might still feel a bit chilly in the water until one gets used to the temperature. Occasionally, it might be a bit windy. The majority of people start going to the various beaches in June. At this time of the year, the beaches start getting busy but not as crowded yet. Summer can get extremely hot in Malta and heat waves are common so make sure you always carry a bottle of water with you and head off to the beach!
The combination of ideal weather conditions and peaceful surroundings make the Maltese islands the perfect escape for a restful holiday.