The northerly flow which revolves Spitsbergen to France will generate an unstable cold air down over Lorient and the Brittany region.
It will make the last weekend of summer feel very chilly …
ephemeral mists and freshness at dawn before the first morning light and variable clouds and cumulus.
By late morning and midday, thinning, more generous on Lorient and the coastline will adorn the arrival from the north developed cumulus. In the afternoon, the instability generates an alternating light (more visible on Groix and the coastline) and towering cumulus generating rain, sometimes heavy and accompanied by thunderstorms and hail.
Wind northwest fresh and moderate (force 3, gusts 25-35 km/h, 40-50 Groix and the exposed coast). Fort Blocked: westerly swell 1m. Low: 7 / 8 degrees; maximum: 16 / 17 degrees; (6 / 7 degrees to 15 / 16 degrees inland). Fresh cloudy in the evening before the arrival of showers supported by second party night; 12 degrees at 8pm and 9 degrees at midnight.
The showers that are evacuated in the early morning to the south before the return of a cloudy morning and variable in the late morning and midday clouds, generous Lorient and the coastal border, and cumulus more developed north of Quéven-Lanester Kervignac-axis.
In the afternoon, the sky, first variable clouds and cumulus becomes unstable with brief rain, towering cumulus and cold showers (locally heavy with hail and thunderstorms). Wind northwest moderate freshening morning (force 3-4, gusts 30-40 km/h, 50-60 Groix and the exposed coast). Fort Blocked: westerly swell 1m. Low: 7 / 8 degrees; maximum: 16 / 17 degrees (6 / 7 degrees to 16 / 17 degrees inland). Sky with lightening fast mercury drop; 14 degrees at 8pm and 9 degrees at midnight.
Between the 1st and 15th September, the temperatures has passed the threshold of 21 degrees for only two days. Disturbed and fresh, temperatures have stagnated between 17 degrees and 19 degrees for one week. Far from 30 to 32 degrees of the 28th and 29th August with the feeling of summer being passed suddenly and being in the heart of Autumn.