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Richardson Bay

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Richardson Bay Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Richardson Bay year round climate

  • Spring (March–May): Average 53–58°F, mild climate, gradually decreasing rainfall, increasing sunshine. Common activities: Hiking, cycling, flower viewing. Suggested clothing: Light jacket, long-sleeved shirt, comfortable shoes.
  • Summer (June–August): Average 61–65°F, warm and dry climate, abundant sunshine. Common activities: Water activities, beach leisure, camping. Suggested clothing: Short-sleeved shirts, shorts, sunglasses, sunscreen.
  • Autumn (September–November): Average 62–54°F, comfortable and pleasant climate, rainfall begins to increase. Common activities: Outdoor activities, autumn scenery viewing. Suggested clothing: Light jacket, long-sleeved shirt.
  • Winter (December–February): Average 51–51°F, cool and humid climate, highest rainfall. Common activities: Indoor activities, winter scenery viewing. Suggested clothing: Warm jacket, sweater, waterproof jacket.

Richardson Bay climatological average

Annual average temperature: approx. 57.2°F / Annual rainfall: approx. 505 mm / Summer humidity: 60%–70% / Rainiest month: December

Richardson Bay monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
51.6°F
106.5
February
51.3°F
55.7
March
53.1°F
89.5
April
55.8°F
18.6
May
58.3°F
14.5
June
61.5°F
2.3
July
63.3°F
0
August
65.3°F
0.6
September
64.9°F
2.5
October
62.6°F
1.8
November
54.7°F
31.8
December
51.8°F
181.6

Richardson Bay weather for the next seven days

9/29
Tuesday
Sunny
63.8°F/57.9°F
9/30
Wednesday
Sunny
66.9°F/57.9°F
10/1
Thursday
Sunny
65.8°F/57.4°F
10/2
Friday
Overcast
71.2°F/61.6°F
10/3
Saturday
Sunny
72.9°F/62.8°F
10/4
Sunday
Sunny
70.1°F/63.1°F
10/5
Monday
Sunny
71.3°F/62.7°F

Richardson Bay Frequently Asked Questions and Useful Information for Travel

Where is Richardson Bay located?

Richardson Bay is a picturesque inlet located in California, United States. It is part of the larger San Francisco Bay.

Can you swim in Richardson Bay?

Richardson Bay is listed as impaired on the USEPA Clean Water Act 303(d) List for fecal coliform. We infer the presence of pathogens from high fecal coliform bacteria concentrations, a common indicator of fecal contamination. Pathogens pose potential health risks to recreational users and shellfish consumers.

What is the best way to see Richardson Bay?

The Richardson Bay Audubon Center and Sanctuary offers a wonderful way to experience Richardson Bay. Visitors can enjoy passive recreation on a half-mile oak woodlands trail. The loop provides gorgeous views of Richardson Bay and opportunities to observe various bird species, including birds of prey.

What is the history of Richardson Bay?

Early map makers named Richardson Bay after the enterprising pioneer William Richardson, who established a port on his 19,000 acre Rancho del Sausalito in the 1840's. Trading vessels and whalers that plied the coast would stop here in the sheltered cove to take on provisions and fresh water.

What kind of wildlife can be seen around Richardson Bay?

Richardson Bay is a haven for birdwatchers, with opportunities to see various bird species, including birds of prey. The surrounding natural areas also support diverse local wildlife.