The average temperature in London, England in May is quite mild at 12.5 °C (54.5 °F). Afternoons can be very mild with average high temperatures reaching 17 °C (62.6 °F). Overnight temperatures are generally a little cool with an average low of 8 °C (46.4 °F). In May the range/ variation of daily average temperatures is 9 °C (16.2 °F). The weather in May is a little parched with occasional rain. A mere 46mm (1.8in) of water is dumped during on average 13 days. In May the heavens above London, England are reasonably fine with on balance a moderate 6:11 of bright sunshine daily. The shortest day is 14:48 long and the longest day is 16:15 long with an average length of 15:35.