June was warmer than average (15.7°C versus an average of 14.2°C), drier than average (13.40 mm versus an average total of 57.43mm) and calmer than average (a wind run of 1827 miles versus an average of 2242 miles).
The maximum temperature in the month was 27.8°C at 17:32 on the 25th, the highest since 29.5°C was recorded on June 19th 2017. The minimum temperature was 7.0°C recorded at 03:08 on the 6th. The average temperature in the month was 15.7°C, the highest ever June average, beating the 15.6°C set in 2017. The mean temperature for June is now 14.3°C. The average daily maximum temperature was 20.9°C, a June record, with the average daily minimum temperature being 10.4°C. The warmest day was the 25th with an average of 19.8°C, with the coldest day being the 6th with an average temperature of 12.5°C. There were no frost days in the month.
The highest dew point was 18.5°C at 15:45 on the 1st, the highest of 2018 so far. The minimum dew point was 2.6°C at 23:35 on the 23rd. The monthly average dew point was 11.1°C. The high wind chill was 27.8°C at 17:32 on the 25th, with the low wind chill being 7.0°C at 03:08 on the 6th. The average monthly wind chill was 15.6°C. There were 262.45 hours of sunshine, with the sunniest day being the 25th when 12.45 hours was recorded.
Rainfall in the month totalled 13.4 millimetres, the lowest monthly rainfall since 6.0 millimetres was recorded in April 2017. This was well below the June average of 52.2 millimetres, and the driest June on record. Rainfall was recorded on only 4 days, equalling the lowest number of rain days set in April 2011. The wettest day was the 8th when 6.0 millimetres was recorded, with 5.2 millimetres being recorded on the 2nd. The highest rain rate was 48.8 millimetres recorded at 07:57 on the 2nd. The yearly rainfall total is now 294.6 millimetres, slightly under 116% of what is normally expected by the end of June.
The highest barometric pressure was 1030.6 millibars at 10:05 on the 22nd. The lowest barometric pressure was 1001.1 millibars at 08:33 on the 14th. The average pressure in the month was 1018.5 millibars. The highest humidity was 98% and the monthly average humidity was 76%. The lowest humidity was 27% at 18:07 on the 25th.
Winds were again very light. The highest wind gust in the month was 31 mph recorded at 09:41 on the 14th. The average gust speed in the month was 4.4 mph, mean 5.7 mph. The average wind speed was 2.6 mph, mean 3.4 mph. The maximum wind speed was 16 mph at 09:43 on the 14th. The total wind run was 1827.0 miles, with the predominate direction being 165°.
The maximum high solar radiation recorded at 14:11 on the 20th was 1294 w/m², the highest since 1320 w/m² was recorded on June 13th 2017. The average solar radiation for the month was 224 w/m². The highest U.V. Index was 7.1, the highest since 7.3 was recorded on July 1st 2017.