Valletta is warmest in August, averaging 29° by day and 26° at night. The wettest month is May with 109 mm, and the year brings about 442 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 16° | 14° | 31 mm | 16° | 9.8 h | Mild |
| February | 16° | 13° | 25 mm | 16° | 10.7 h | Mild |
| March | 16° | 14° | 31 mm | 16° | 11.7 h | Mild |
| April | 17° | 16° | 12 mm | 17° | 12.9 h | Sightseeing |
| May | 20° | 18° | 109 mm | 19° | 13.9 h | Mild |
| June | 25° | 22° | 6 mm | 23° | 14.4 h | Sightseeing |
| July | 28° | 25° | 3 mm | 26° | 14.2 h | Beach weather |
| August | 29° | 26° | 12 mm | 28° | 13.4 h | Beach weather |
| September | 27° | 25° | 42 mm | 27° | 12.2 h | Beach weather |
| October | 24° | 22° | 62 mm | 24° | 11.1 h | Sightseeing |
| November | 21° | 19° | 75 mm | 22° | 10.1 h | Sightseeing |
| December | 18° | 16° | 34 mm | 18° | 9.6 h | Sightseeing |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: July, August and September — highs around 28°, nights no colder than 25°, and at most 42 mm of rain in a month. The sea sits at 26–28° then.
Walking the city: April, June, October, November and December — highs of 17–25° and no more than 75 mm of rain a month.