The warmest and driest months are typically June through September, with the highest temperatures occurring in September. Mid-summer (July–August) is often a bit cooler due to the sea breezes and fog common then.
June through September are the warmest and driest months of the year, with the highest temperatures usually observed in September.  Mid-summer (July and August) tends to be slightly cooler because of the presence of sea breezes and fog.