Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Sliema is from May, June, September. — consistent weather climate
☀️Pleasant
| Score | 42 | 46 | 56 | 79 | 94 | 98 | 81 | 72 | 91 | 85 | 77 | 56 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Mild | Mild | Mild | Mild | Pleasant | Pleasant | Hot & dry | Hot & dry | Pleasant | Pleasant | Pleasant | Mild |
| Temperature | 11–15°C | 12–16°C | 12–17°C | 14–19°C | 17–22°C | 21–27°C | 24–30°C | 25–30°C | 23–28°C | 20–24°C | 17–21°C | 14–17°C |
| Feels like | 8–12°C | 8–13°C | 9–14°C | 12–17°C | 16–22°C | 23–29°C | 27–33°C | 28–34°C | 25–30°C | 20–25°C | 15–19°C | 10–14°C |
| Precipitation | 36mm 8 days | 45mm 6 days | 33mm 6 days | 14mm 3 days | 14mm 3 days | 3mm 1 days | 1mm 0 days | 5mm 2 days | 32mm 5 days | 54mm 8 days | 75mm 11 days | 37mm 8 days |
| Sunshine | 8.7h ☀︎ 86% | 9.4h ☀︎ 86% | 10.5h ☀︎ 88% | 11.1h ☀︎ 85% | 12.5h ☀︎ 89% | 13.6h ☀︎ 94% | 13.9h ☀︎ 97% | 12.5h ☀︎ 93% | 11.2h ☀︎ 91% | 9.8h ☀︎ 87% | 8.6h ☀︎ 83% | 8.2h ☀︎ 84% |
| Wind | W · 32 km/h | W · 31 km/h | W · 31 km/h | N · 29 km/h | NW · 27 km/h | NW · 22 km/h | NW · 20 km/h | NW · 19 km/h | NW · 23 km/h | N · 25 km/h | W · 28 km/h | NW · 30 km/h |
| Humidity (%) | 72% | 74% | 74% | 75% | 74% | 71% | 69% | 70% | 72% | 74% | 73% | 72% |
| Day length | 10.0h | 10.9h | 12.0h | 13.1h | 14.1h | 14.6h | 14.3h | 13.5h | 12.4h | 11.3h | 10.3h | 9.8h |
While standard holiday brochures crown June for its flawless skies, September is Sliema's true zenith—the moment when August's suffocating crush vanishes, the Mediterranean remains like bathwater, and the town finally regains its pulse.
Perched on a limestone peninsula jutting into the Mediterranean, Sliema stares directly across Marsamxett Harbour at the golden fortifications of Valletta. Once a sleepy retreat of seaside villas and quiet coves, it has evolved into Malta's most bustling coastal hub—a high-density strip of waterfront cafés, rocky bathing ledges, and breezy promenades. Life here is oriented entirely toward the water. On warm afternoons, the wide coastal promenade known as the Sliema Front fills with walkers, joggers, and talkative locals soaking up the maritime draft, while ferries slice across the harbour toward the capital. Yet because Sliema is the island’s commercial engine as well as its playground, the calendar plays tricks on unsuspecting travellers: the best weather does not align with the best time to be here, and the most crowded month is not necessarily the sunniest.
If you look purely at meteorology, June looks like perfection. But travel is not an atmospheric reading; it is an experience of space, pace, and comfort. By September, the sheer madness of midsummer collapses. The schools reopen, the frantic August crowds dissolve, and the peninsula exhales. You can actually walk the paved curves of the Sliema Front without dodging tour groups, and finding a flat patch of rock to dive into the sapphire sea at Qui-Si-Sana no longer requires a dawn vigil.
More importantly, the sea in September is a dream. June waters are still shaking off the winter chill, but by late September the sea has baked under three months of Mediterranean sun. It is warm, buoyant, and silky. The air is hot enough to demand a swim, reaching around twenty-eight degrees, yet the savage humidity of high summer softens into manageable coastal breezes. In the evenings, outdoor tables along The Strand fill with a relaxed, local hum rather than stressed resort frenzy.
October extends this gentler rhythm. The days shorten and sea temperatures gradually taper, but swimming remains a daily habit well past mid-month. You will encounter the occasional dramatic Mediterranean thunderstorm—sudden, drenching downpours that turn Sliema's steep side streets into torrents for an hour before clearing back to brilliant blue. For travellers who value room to breathe alongside summer heat, this early autumn window is completely unmatched.
Summer in Sliema arrives with blazing clarity in June. The sky turns a relentless, cloudless cobalt, and rain disappears entirely. In early June, the energy is electric: open-air lidos fill, the ferry across Marsamxett Harbour churns back and forth with sightseers, and the waterfront promenade hums late into the balmy night. If you want endless sunshine and don't mind cool water, June is exhilarating.
By July and August, however, the town transforms into an open-air sauna. Apparent temperatures regularly surge past thirty-four degrees, reflected harshly off pale limestone facades and tarmac. Sliema is the most densely populated urban patch on the island, and during August it reaches absolute saturation. High-season visitors flood every hotel room, the harbour ferries pack to the gunwales, and finding a tranquil perch anywhere between Tigné Point and the border of St. Julian's becomes near impossible.
August is vibrant if you thrive on relentless energy, outdoor nightlife, and the spectacle of harbour fireworks crackling overhead in the dark, but it can easily overwhelm. The heat radiates off the streets well past midnight, turning what should be a casual stroll into a test of stamina. If you must travel in the deep summer, plan your days entirely around early morning swims off the coastal rocks and retreat indoors during the white-hot middle of the day.
November presents the single strangest contradiction in Sliema's calendar. On paper, it is the wettest month of the year, bringing heavy squalls, grey swells crashing against the seawall, and days that demand a waterproof shell. Yet visitor numbers spike near their annual peak, rivalling the height of summer.
This counterintuitive surge is driven by European travellers fleeing continental frost in search of mild Mediterranean air, combined with Malta's bustling shoulder-season conference schedule. With afternoon temperatures hovering near twenty degrees, it feels pleasantly brisk to northern visitors, but the reality on the ground is complex. Sliema Front takes the brunt of easterly winds, sending salt spray over the railings and turning the coastal walking paths damp and slick.
If you arrive in November expecting a beach town, you will be sorely disappointed: swimming is largely over, and the limestone shelves sit empty beneath churning grey seas. If, however, you treat Sliema as an urban base—wandering the traditional backstreets lined with painted wooden balconies, taking rainy ferry hops to Valletta's museums, and enjoying café life without the summer glare—the lively buzz can be appealing. Just know that you are sharing the pavements with surprisingly dense crowds during the wettest weeks of the year.
Between December and March, Sliema drops its resort veneer and returns entirely to its residents. The contrast with the summer rush is stark. The coastline feels windswept, dramatic, and surprisingly moody. Strong gregale winds occasionally sweep across Marsamxett Harbour, sending plumes of white foam crashing over the rocky shoreline and silencing the outdoor dining terraces along the water.
Daytime temperatures sit around fifteen to seventeen degrees, which sounds mild until you encounter the damp maritime cold that creeps through unheated stone buildings. You will want layers, an umbrella, and a windbreaker. January and February are quiet, introspective months. The frantic pace of the shopping districts eases, and a solitary walk out to Tigné Point offers razor-sharp, unobstructed views of Valletta's baroque skyline across clean, storm-scrubbed water.
By March, spring begins to show its hand. The sun breaks through with warmth that hints at the coming season, wild caper plants sprout green shoots from historical limestone walls, and locals start lingering outside on café benches again. It is too brisk for the sea, but it is an exceptional window for walking all the way around the bays toward St. Julian's without breaking a sweat.
April brings the turning of the tide. The winter rains drop away, daylight expands rapidly, and Sliema shakes off its chill. The outdoor café culture that defines the town reignites in full force along The Strand. Walking the coastal front becomes pure pleasure: warm sun, cool sea breezes, and clean, clear air before the haze of summer sets in.
May is arguably the most effortless month to be outdoors. With daytime warmth consistently settling in the low twenties, you can spend entire days traversing the peninsula on foot, exploring the quiet residential avenues of traditional townhouses or lounging on the sun-warmed rocks. The sea is still brisk enough to make a swim an act of bravery, but the town is bathed in exceptional light, the mood is optimistic, and the suffocating high-season crowds are still weeks away from arriving.