Air Temperature
| Highest Maximum | 31.9°C | 21st |
| Lowest Maximum | 22.2°C | 6th |
| Highest Minimum | 23.7°C | 23rd |
| Lowest Minimum | 16.0°C | 3rd |
| Mean Maximum | 26.6°C |
| Mean Minimum | 19.7°C |
| Mean | 23.2°C |
Relative Humidity
| Highest Relative Humidity | 95% | Numerous days |
| Lowest Relative Humidity | 30% | 21st |
| Mean Relative Humidity | 79.0% |
Wind
| Highest Gust | 45.1km/h | 5th |
| Mean Wind Speed | 9.7km/h |
| Most Frequent Wind Direction | Northwest |
Atmospheric Pressure
| Highest Atmospheric Pressure | 1020.5hPa | 5th |
| Lowest Atmospheric Pressure | 1008.6hPa | 14th |
| Mean Atmospheric Pressure | 1014.8hPa |
Precipitation
| Total Rainfall During June 2023 | 5.8 mm |
| Total Rainfall Since Last 01/09 | 576.6 mm |
| Highest 24 Hour Total | 2.4 mm | 6th |
| Rain Days | 4 days |
| Thunderstorm Days | 2 days |
| Hail Days | 0 days |
Rainfall Events
| 02/06/2023 | Distant Showers | |
| 05/06/2023 | 1.8 | Thunderstorm |
| 06/06/2023 | 2.4 | Thunderstorm |
| 10/06/2023 | 1.3 | Showers |
| 11/06/2023 | 0.3 | Light Rain |
| 19/06/2023 | Fog | |
| 30/06/2023 | Fog |
June 2023 Compared to the Climate Means
| Climate Mean | June 2023 | Anomaly | |
| Mean Maximum Temperature | 28.5°C | 26.6°C | -1.9°C |
| Mean Minimum Temperature | 19.8°C | 19.7°C | -0.1°C |
| Mean Temperature | 24.2°C | 23.2°C | -1.0°C |
| Mean Relative Humidity | 69.0% | 79.0% | +10.0% |
| Mean Atmospheric Pressure | 1015.1hPa | 1014.8hPa | -0.3hPa |
| Total Rainfall | 4.0 mm | 5.8 mm | +1.8 mm |
| Total Rainfall Since Last 01/09 | 520.3 mm | 576.6 mm | +56.3 mm |
| Total Rain Days | 1 day | 4 days | +3 days |
| Total Thunderstorm Days | 1 day | 2 days | +1 day |
| Total Hail Days | 0 days | 0 days | / |
Significantly Cooler in June 2023
An overall unstable June with air temperatures that were cooler than the norm and more rain than average kicked off the meteorological summer on the Maltese Islands.
Throughout June, the air temperature ranged from a 16.0°C minimum on the 3rd to a 31.9°C maximum on the 21st. Localities across central Malta recorded higher temperature values on that day. Last month’s mean minimum temperature of 19.7°C was just a fraction of a degree cooler than the norm. The anomaly in mean maximum temperatures was steeper, with the 26.6°C value for June 2023 falling a staggering 1.9°C below the climate norm. June 2023 was a breath of fresh air from the previous two record-breaking Junes.
June’s 5.8 mm of precipitation spilled over the climate norm by almost 2 mm. Some localities were even wetter. Rain fell on four days. Two of these were accompanied by thunder. All wet days occurred during a particularly unstable first half of the month. The unstable start to the month took many by surprise, but meteorological records show that a wet start to summer is not that uncommon. It was still, however, the first June in four years to register any rain. The meteorological situation stabilized somewhat in the final two weeks of the month, with the showery weather giving way to longer hours of sunshine.
The fact that showers persisted well into the first half of June had a noticeable impact on most meteorological parameters. The rain recharged the soil with moisture. Subsequent sunshine evaporated this, elevating levels of humidity. In fact, relative humidity was a staggering 10% higher than the norm. This prevented air temperatures from soaring to extreme levels. In fact, no heat spells were registered in June. The rain was also heavy enough to cause runoff from roads and valleys. This created an influx of colder fresh water in most bays, cooling down the sea slightly. The late showers also had a visible impact on vegetation. Wild small trees and bushes were given that much-needed boost of surface water ahead of the dry season. Mature trees will utilize this later on in the season. Wilting will take longer to occur.
Rainfall Totals around the Maltese Islands in June 2023 (and since last September 1st):
Għarb: 5.8 mm (576.6 mm)
Victoria: 6.6 mm (508.2 mm)
Xewkija: 8.4 mm (505.2 mm)
Nadur: 8.5 mm (505.8 mm)
Marsalforn: 9.2 mm (533.4 mm)
Mellieħa: 3.2 mm (473.1 mm)
Buġibba: 4.9 mm (551.7 mm)
Mġarr: 3.7 mm (509.3 mm)
Naxxar: 12.2 mm (649.7 mm)
Mosta: 11.4 mm (617.0 mm)
Dingli: 5.5 mm (537.2 mm)
Msida: 3.8 mm (704.8 mm)
Valletta: 1.4 mm (528.5 mm)
Imqabba: 5.4 mm (587.8 mm)
Żabbar: 2.2 mm (583.2 mm)
Birżebbuġa: 3.4 mm (486.3 mm)
Sliema: 2.0 (676.3 mm)
NATIONAL MEAN: 5.7 mm (560.8 mm)