Warm dry summers and cool rainy winters characterize the Point Reyes Peninsula's climate, similar to the type of climate that prevails on the Mediterranean. While this is the general trend, the weather may be quite different depending on which side of the Inverness Ridge you are visiting. For example, there are usually moderate to strong winds on the exposed headlands and outer beaches and lighter breezes on the east side of Inverness Ridge.
Summer: Although there is very little rain during summer months, there is often dense fog. If you are visiting Bear Valley or Tomales Bay, expect patchy morning fog to burn off by mid-day. Afternoons are often sunny and warm with a light breeze. By contrast, the beaches and headlands are often 20 degrees cooler with heavy fogs common throughout the day in July, August and September.
Fall: The coastal areas of Point Reyes experience some of the clearest days in late September, October and early November. The occasional storm will start rolling through in late October, bringing clouds, wind, and rain. The strongest winds occur in November and December during occasional southerly gales.
Winter: The heaviest rainfall occurs in the winter months. Come prepared for rain and drizzle to possibly last for several days. More rain falls east of Inverness Ridge than on the west side. In between winter rains, it is often sunny, calm and cool.
Spring: Most spring days are windy and even Bear Valley and Tomales Bay experience stiff breezes. Expect cool temperatures in March. By late May and early June, temperatures can be quite warm on the east side of Inverness Ridge.
The moderating influence of the Pacific Ocean creates a climate with no great extremes of heat or cold. Any season can bring interesting weather during your visit to Point Reyes National Seashore. Come prepared!
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