Climate of Malta
Encyclopedia
Malta
Malta
Malta , officially known as the Republic of Malta , is a Southern European country consisting of an archipelago situated in the centre of the Mediterranean, south of Sicily, east of Tunisia and north of Libya, with Gibraltar to the west and Alexandria to the east.Malta covers just over in...

 has a Subtropical-Mediterranean climate
Mediterranean climate
A Mediterranean climate is the climate typical of most of the lands in the Mediterranean Basin, and is a particular variety of subtropical climate...

 (Köppen climate classification
Köppen climate classification
The Köppen climate classification is one of the most widely used climate classification systems. It was first published by Crimea German climatologist Wladimir Köppen in 1884, with several later modifications by Köppen himself, notably in 1918 and 1936...

 Csa), with mild winters and warm to hot summers. Rain occurs mainly in winter, with summer being generally dry. There is no real thermal dormant season for plants, although plant growth can be checked briefly by abnormal cold in winter (patches of ground frost may occur in inland locales), and summer heat and aridity may cause vegetation to wilt. Effectively there are only two seasons, which makes the islands attractive for tourists, especially during the drier months. However, strong winds can make Malta feel cold during the springtime. Large fluctuations in temperature are rare.

Temperature

The average annual temperature is 18–19 °C (64.4–66.2 F) (one of the highest results in Europe): around 22 °C (71.6 °F) during the day and 15 °C (59 °F) at night. In the coldest month – January – the temperature ranges from 12 to 20 °C (53.6 to 68 F) during the day and 7 to 15 °C (44.6 to 59 F) at night. In the warmest month – August – the temperature ranges from 28 to 34 °C (82.4 to 93.2 F) during the day and 19 to 24 °C (66.2 to 75.2 F) at night. Large fluctuations in temperature are rare. Average number of days above 32 °C (89.6 °F) is to 15, several days in July and several days in August. Annual average relative humidity
Relative humidity
Relative humidity is a term used to describe the amount of water vapor in a mixture of air and water vapor. It is defined as the partial pressure of water vapor in the air-water mixture, given as a percentage of the saturated vapor pressure under those conditions...

 is 73%, ranging from 65% in July (morning: 78% evening: 53%) to 78% in December (morning: 83% evening: 73%).
Generally – summer's/holiday season lasts to 8 months, beginning around mid-April with temperatures 19–23 °C (66.2–73.4 F) during the day and 13–14 °C (55.4–57.2 F) at night, ending in November with temperatures 17–25 °C (62.6–77 F) during the day and 11–17 °C (51.8–62.6 F) at night, although also in remaining 4 months temperatures sometimes reach 20 °C (68 °F) during the day. Among all capitals in Europe continent, Valletta - capital of Malta has the warmest winters with average temperature of 15–16 °C (59–60.8 F) during the day and 9–10 °C (48.2–50 F) at night in the period January–February. In spring - March and autumn - December, average temperatures is around 17 °C (62.6 °F) during the day and 11 °C (51.8 °F) at night. Also, Malta is one of the few places in Europe which are "green" all year round.

The lowest temperature ever recorded at Valletta was on 19 February 1895, with 1.2 °C (34.2 °F), and the highest temperature was 43.8 °C (110.8 °F) recorded in August 1999 at Luqa International Airport. An unofficial lowest temperature of -1.7 °C was recorded on 1 February 1962 in the Ta' Qali airfield with snow on the ground.

Sunshine

Malta enjoys around 3,000 hours of sunshine per year (one of the highest results in Europe), from average 5 hours of sunshine per day in December to average 12 hours of sunshine per day in July. This is about twice the hours of sunshine as cities in the northern half of Europe enjoy, for comparison: London
London
London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

 1,461 per year, 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.

Sea Temperature

Average annual temperature of sea is 20 °C (68 °F) (the highest result in continent of Europe), from 16 °C (60.8 °F) in January to 26 °C (78.8 °F) in August. In total 6 months - from June to November - the average sea temperature exceeds 21 °C (69.8 °F), while in May and December - 18 °C (64.4 °F). In the remaining 4 months - from January to April - the average sea temperature is about 16 °C (60.8 °F).

In the second half of April - beginning of the summer/holiday season the average sea temperature is 17 °C (62.6 °F). The highest temperature is 27 °C (80.6 °F) in the second half of August, in late August and early September drops to 26 °C (78.8 °F) in the second half of September drops to 25 °C (77 °F). Around mid-October drops to 24 °C (75.2 °F), about the last week of October drops to 23 °C (73.4 °F) and in early November drops to 22 °C (71.6 °F) (data of 2010).
Average sea temperature
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Malta 16 16 16 16 18 21 24 26 25 23 21 18

Precipitation

Water supply poses a problem on Malta, as the summer is both rainless and the time of greatest water use, and the winter rainfall often falls as heavy showers running off to the sea rather than soaking into the ground. Malta depends on underground reserves of fresh water, drawn through a system of water tunnels called the Ta' Kandja galleries, which average about 97 m below surface and extend like the spokes of a wheel. In the galleries in Malta's porous limestone, fresh water lies in a lens upon brine. More than half the potable water of Malta is produced by desalination
Desalination
Desalination, desalinization, or desalinisation refers to any of several processes that remove some amount of salt and other minerals from saline water...

, which creates further issues of fossil fuel use and pollution.

Snow is virtually unheard of, with very few and brief snow flurries recorded in February 1895, January 1905 and 31 January 1962. No accumulation has been reported on the coast at least since 1858, but on the last day of January 1962 snow briefly covered some parts of the interior of the main island. The following night the only frost in the history of Malta was recorded in the Ta' Qali airfield.

Climate data

Records

Despite the relative stasis of the Maltese climate, historical records present some variations. In the capital city of Valletta, meteorological officials of the time recorded on February 19th, 1895, a temperature of 1.2 °C (34.2 °F), which remains a record for the city. Regarding the island as a whole, a temperature of -1.7 °C was recorded on the 1st of February, 1962, at Ta' Qali airfield, in the centre of the island, which was pelted first by frozen precipitation (hail
Hail
Hail is a form of solid precipitation. It consists of balls or irregular lumps of ice, each of which is referred to as a hail stone. Hail stones on Earth consist mostly of water ice and measure between and in diameter, with the larger stones coming from severe thunderstorms...

), and later in the day covered by snowfall that lasted through the night. Snow, which is virtually unheard of, is officially on the record books of the past 200 years as having occurred in January 1858 (widespread snowfall),March 1877 (light snow without accumulation),February 1895 (snow squalls without accumulation),January 1905 (flurries without accumulation),March 1949 (snow recorded in the interior of the island), and January 31st, 1962. On the last of these dates, January, 1962, some parts of the interior of the island were covered by snow for the majority of the day, and the following night, February the 1st, marks the only event in the history of Malta in which frost
Frost
Frost is the solid deposition of water vapor from saturated air. It is formed when solid surfaces are cooled to below the dew point of the adjacent air as well as below the freezing point of water. Frost crystals' size differ depending on time and water vapour available. Frost is also usually...

was recorded. In August, 1999, the meteorological department at Luqa International Airport measured a record high temperature for the nation of 43.8 °C (110.8 °F).
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