Short answer: very warm, very sunny, & the sea is the warmest you will find it all year. If you are looking for the sweet spot between high-summer intensity & comfortable autumn relief, September is arguably the smartest month of the year to visit the Maltese islands. Here is what Malta weather in September 2026 looks like in actual numbers, breaking down everything you need to know so you can book your next Mediterranean escape with absolute confidence.

How Hot Is Malta In September?

Daytime averages start the month around 29°C & ease to about 26°C by the end, with nights sliding from roughly 22°C down to 20°C. That is high-summer warmth without the stifling mid-August intensity: it is hot enough for a full, lazy beach day under the sun, yet comfortable enough for historical sightseeing & walking tours without wilting. Furthermore, as the school term resumes across Europe & Malta by the second week of the month, the heavy crowds clear out, leaving historical sites, coastal pathways, & public squares delightfully breathable.

How Sunny Is It?

Very. September still delivers close to nine to ten hours of bright sunshine on an average day, which places it firmly among the sunniest months of the entire Maltese calendar. Cloud cover tends to be rare & fleeting, building only briefly around the month’s late, atmospheric thunderstorms.

Is Rain Likely?

Probably not much. A typical September sees only around four to six days with any recorded precipitation, & the month’s total averages a modest 36mm to 40mm. Most of this moisture falls in short, theatrical, & fast-moving bursts late in the month. When a storm does roll through, it usually clears within a couple of hours, leaving behind freshly washed, brilliant blue skies & a crisp clarity that photographers adore.

What About The Sea?

Hovering around 25°C to 26°C, the Mediterranean in September reaches its annual peak. The sea spends the entire summer absorbing & banking heat, only to pay it back generously through the autumn months. This is why September swimmers actually get a warmer, more inviting sea than June visitors ever do. Every swimming spot, hidden cove, & lagoon featured in your beaches guide remains fully in season & primed for hours of snorkelling.

The Verdict For September 2026

Book it. You get reliable summer heat with the sharp edges taken off, the absolute warmest water of the year, significantly thinner crowds, & the vibrant grand finale of the festa season anchored around the September 8 national holidays (Victory Day & local celebrations like Naxxar Vittorja).

Track the live Malta forecast as your travel dates approach – especially if you are visiting late in the month when the first transitionary autumn storms roll through – & pack one light cardigan or layer for breezy evenings. The rest of your trip will be pure, uninterrupted sunshine.