What’s the weather like in Sliema in September?September falls within the high season in Malta, which means the weather is very warm, dry and sunny. Sliema weather in September offers constant sunshine and heat. It’s unlikely to rain much during your stay, with just a few light showers spread over the month.
Geographical influencesLocated on the sunny north-east coast of Malta, Sliema enjoys a subtropical climate with long and hot summers. Temperatures are at the highest around midday and eventually cool down to the low-twenties in the evening. The surrounding sea can influence the humidity levels on the island, which can rise to high-seventies on the warmest days.
AveragesThe Mediterranean Sea is very mild and has an average temperature of 25°C, which is great for swimming. It rains on eight days of the month with an average rainfall of 64mm. During the day, temperatures reach up to 28°C with 72% humidity. 11mph winds come in from the sea, which helps to lower temperatures at night to 20°C.