May weather forecastSliema, Malta
May
Weather in May
May in Sliema, Malta, brings a noticeable leap in temperature, reaching 19.7°C (67.5°F) compared to April. Responding to the soaring mercury, seawater warms to a comfortable 18.8°C (65.8°F), making the beaches more appealing. May proliferates with warming temperatures, minimal rain, and clear, sunlit skies. A distinct decrease in cloud cover to just 15% makes for clear skies above Malta's architectural gems. The UV index starts to creep up, prompting locals and visitors to take precautions while out and about.Temperature
A minor adjustment in Sliema's average high-temperature is noted with the start of May, touching a still comfortable 19.7°C (67.5°F) from April's 16.9°C (62.4°F). Sliema, in May, registers a nighttime average temperature of 18.5°C (65.3°F).Humidity
In May, the average relative humidity in Sliema is 76%.Rainfall
In Sliema, in May, it is raining for 4.8 days, with typically 9mm (0.35") of accumulated precipitation. In Sliema, during the entire year, the rain falls for 107.6 days and collects up to 347mm (13.66") of precipitation.Sea temperature
In May, the average sea temperature in Sliema, Malta, is 18.8°C (65.8°F).Note: The majority of individuals find swimming in 18.8°C (65.8°F) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
In May, the average length of the day in Sliema is 14h and 4min.On the first day of the month, sunrise is at 6:08 am and sunset at 7:49 pm. On the last day of May, in Sliema, sunrise is at 5:46 am and sunset at 8:12 pm CEST.
Sunshine
The average sunshine in May is 11.7h.UV index
In May, the average daily maximum UV index in Sliema is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: In May, a daily UV index of 6 turns into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Sliema, Malta
- Average high temperature in May: 19.7°C
The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is February (14.9°C).
- Average low temperature in May: 18.5°C
The month with the highest average low temperature is August (26.4°C).
The coldest month (with the lowest average low temperature) is February (13.5°C).
Average pressure in May
Sliema, Malta
- Average pressure in May: 1014.7mbar
The month with the highest atmospheric pressure is December (1019.3mbar).
The month with the lowest atmospheric pressure is July (1013.9mbar).
Average wind speed in May
Sliema, Malta
- Average wind speed in May: 20.9km/h
The windiest month (with the highest average wind speed) is January (27.9km/h).
The calmest month (with the lowest average wind speed) is August (13.2km/h).
Average humidity in May
Sliema, Malta
- Average humidity in May: 76%
The month with the highest relative humidity is April (77%).
The month with the lowest relative humidity is December (69%).
Average rainfall in May
Sliema, Malta
- Average rainfall in May: 9mm
The wettest month (with the highest rainfall) is November (76mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in May
Sliema, Malta
- Average rainfall days in May: 4.8 days
The month with the highest number of rainy days is November (15.6 days).
The month with the least rainy days is July (0.9 days).
Average sea temperature in May
Sliema, Malta
- Average sea temperature in May: 18.8°C
The best month for swimming (with the highest average sea temperature) is August (26.1°C).
The coldest months (with the lowest average sea temperature) are February and March (15.4°C).
Average daylight in May /
Average sunshine in May
Sliema, Malta
- Average daylight in May: 14h and 6min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 11h and 42min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in May
Sliema, Malta
- Average sunshine days in May: 23.8 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is November (12 days).
Average UV index in May
Sliema, Malta
- Average UV index in May: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).
Average cloud cover in May
Sliema, Malta
- Average cloud cover in May: 15
The month with the most cloud cover is January (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in May
Sliema, Malta
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





