May 2019 Summary

In Brief:
Very dry but rather cool.  Plenty of fine weather, but unsettled until the 10th and during the final week.

Temperature: [Minimum]:
Lowest: 3.1 degs C on the 6th.  Coldest May night since 2016 and 2nd coldest since at least 2003.
Highest: 13.1 degs C on the 31st.
Average minimum:  9.24 degs C.  5th lowest of last 16 Mays.  Above 2005, '10, '14 and '15.
Nights with temperature below 5 degs C = 3. Equal with 2005 and '18 as most in last 16 Mays.
Nights with temperature below 0 degs C = 0.

Temperature: [Maximum]:
Lowest: 13.5 degs C on the 5th.  In all of the last 10 Mays, except 2014, there has been a colder day than this.
Highest: 21.0 degs C on the 25th, 30th and 31st.  There were 3 warmer days in April.  There has been a warmer day than these in every May since 2006, except 2011, '13 and '17.
Average maximum: 17.06 degs C.  3rd warmest May since 2013 but 6th coolest of the last 16.
Days with temperature above 20 degs C = 3.   Same as in April.
Days with temperature above 25 degs C = 0.

Rainfall:
Total:  27.4 mm.  Driest month since June 2018 and driest May since 2011.  3rd driest of the last 12 Mays.
April 2019:  76.5 mm.
May 2018:  61.2 mm.

Wettest day:  10.2 mm on the 10th.
Other days with 5 mm or more:  8th (7.0 mm) and 7th (5.7 mm).
Wettest spell:  7th to 10th: 22.9 mm.

Driest spell:  11th to 27th: 0.1 mm.
Completely dry days:  17.  Most since October 2018.  Although the driest month since June 2018, there were disproportionately fewer completely dry days.  May 2018, with 61.2 mm, had 19 completely dry days!
Days with no measurable rain:  23.  Most since June 2018 and = most for May since 2012.

Cumulatively: 2019 = 391.9 mm.
2018:  661.0 mm.  [-40.7 %].   5th driest January to May period since 2009.

Thunder:
None this month. 

Pressure:
Lowest: 989.6 mb on the 8th.  
Highest: 1041.6 mb on the 13th.