From Tolkien Gateway

Laer was the Sindarin name for the season of summer, known in Quenya as Lairë. This was also the name of the second season in the Calendar of Imladris, 72 days that fell more or less between 1 June and 9 August in the Shire Calendar.[1]


Calendar of Imladris
'First Day' 'Spring' 'Summer' 'Autumn' 'Middle Days' 'Fading' 'Winter' 'Stirring' 'Last Day'
Quenya: Yestarë Tuilë Lairë Yávië Enderi Quellë Hrívë Coirë Mettarë
Sindarin: Ethuil Laer Iavas Firith Rhîw Echuir