Well, I'll visit RN at the beginning of August and I wonder how is the rain during June and July.

From MSN weather, by far, Fortaleza is the driest place during June-August, followed by RN and Pernambuco. The Weather Channel tough, give all similar precipitation levels, with just a little advantage for Fortaleza (but windy, I believe).

On the link below, the guy mention the west coast of RN (costa oeste), what is it? I know South & North... Natal, Pipa, Fortaleza, and Recife are always there for June-August.

So, I wonder the weather during June-August, when my family will spend vacations. When it rains, is it similar to Thailand, where one hour later beaches are ok? How about PN, the beach doesn't look particular impressive after a raining day.
Thanks in advance!

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This is from MSN weather, The Weather Channel give all three locations similar precipitaion numbers.
Monthly averages RECIFE
June Avg Low: 22° Avg High: 27° Avg Precipitation: 16.83 cm
July Avg Low: 22° Avg High: 26° Avg Precipitation: 14.31 cm
August Avg Low: 22° Avg High: 26° Avg Precipitation: 9.97 cm

Monthly averages NATAL

June Avg Low: 23° Avg High: 30° Avg Precipitation: 18.07 cm
July Avg Low: 22° Avg High: 29° Avg Precipitation: 14.98 cm
August Avg Low: 22° Avg High: 29° Avg Precipitation: 7.59 cm

Monthly averages FORTALEZA

June Avg Low: 24° Avg High: 30° Avg Precipitation: 10.11 cm
July Avg Low: 24° Avg High: 30° Avg Precipitation: 4.44 cm
August Avg Low: 24° Avg High: 30° Avg Precipitation: 2.51 cm