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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 11.7–14.6°C, 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 16.4–18.5°C, 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 17.0–12.6°C, 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 10.7–11.0°C, 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. 14°C / Annual rainfall: approx. 505 mm / Summer humidity: 60%–70% / Rainiest month: December

Richardson Bay monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
10.9°C
106.5
February
10.7°C
55.7
March
11.7°C
89.5
April
13.2°C
18.6
May
14.6°C
14.5
June
16.4°C
2.3
July
17.4°C
0
August
18.5°C
0.6
September
18.3°C
2.5
October
17°C
1.8
November
12.6°C
31.8
December
11°C
181.6

Richardson Bay weather for the next seven days

2/11
Wednesday
Moderate rain
15.2°C/11.1°C
2/12
Thursday
Cloudy
12.7°C/8.4°C
2/13
Friday
Fog
10.8°C/8.7°C
2/14
Saturday
Cloudy
13°C/10°C
2/15
Sunday
Patchy rain nearby
11.9°C/9.2°C
2/16
Monday
Patchy rain nearby
11.7°C/8.5°C
2/17
Tuesday
Patchy rain nearby
10.5°C/8.3°C

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.