Originally Posted by becnal
And by the way, it will be rainy and extremely wet the whole way up the Pyrenees. Once you get the Roncavalles, the sun comes out and dries everything off, then you won't see rain again until Galicia.
The 2 times I biked from France to Spain, it was sunny and hot in both countries (once in June, once in September). It was also sunny and hot on the days I rode over the Tourmalet and the Col d'Aspin in June, both passes entirely within France.