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September in Sliema brings high temperatures, with highs of 27°C (81°F) and nights dropping to 24°C (75°F). With excellent weather conditions overall, it's a good time to visit.
If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Pick a month to see the average temperature, rainfall and sunshine in Sliema - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Sliema typically stay consistent throughout September, with daily highs averaging around 27°C (81°F). Nights are warm, with lows typically ranging from 20°C (68°F) to 23°C (73°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Sliema spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Our historical data for Sliema spans 1976 to 2026, revealing these weather extremes.
Find out more about the weather in Malta and which places have the best travel conditions in this month. See all of Malta in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm but pleasant conditions in Sliema in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Light rain is possible, so consider bringing a small umbrella or rain jacket. With water temperatures around 25°C (77°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Sliema climate overview or explore weather in Malta.
Where to go in September - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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