St Julian’s, Malta weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: June – September
What is the weather like in St Julian’s, Malta in September?
In September, St Julian’s, Malta is warm: daytime highs average 26 °C, and even at night it stays warm at around 23 °C. The sea averages 25.9 °C – pleasant for swimming. With around 9 hours of sunshine a day, there is plenty of sun. Rain is rare: about 4 days bring 31 mm in total. The air is often humid and muggy. All in all, September is an excellent month for a holiday in St Julian’s, Malta.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 100 | 100 | 82 |
| Day | 28° | 26° | 23° |
| Night | 25° | 23° | 21° |
| Sea | 27° | 26° | 24° |
| Sun | 12 h | 9 h | 8 h |
| Rain days | 1 | 4 | 6 |
More details for September
- Daylight
- 12 h 28 min06:44 – 19:11
- UV index
- 7 · highclear sky, noon (estimate)
- Muggy days
- 21 daysdew point 18 °C or more
- Wind
- 25 km/haverage daily peak
- Cloud cover
- 27 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+2Europe/Malta
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %99 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
St Julian’s, Malta in September: quick answers
Is St Julian’s, Malta hot in September?
Warm rather than hot: in September, daytime highs in St Julian’s, Malta average 26 °C and nights cool to about 23 °C.
Can you swim in St Julian’s, Malta in September?
Yes. In September the sea averages 25.9 °C – pleasant for swimming.
Does it rain much in St Julian’s, Malta in September?
Rain is rare: about 4 days bring 31 mm in total.
St Julian’s, Malta month by month
The whole year in St Julian’s, MaltaAll destinations: Malta
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)