Yerba Buena Island

Island Small San Francisco Bay island with residential and marina

Yerba Buena Island sits beneath the San Francisco-Oakland Bay Bridge, linked to Treasure Island; visitors access short trails, skyline viewpoints and bridge infrastructure photography.

Main image

Yerba Buena Island is a small island in central San Francisco Bay that sits beneath the western span of the San Francisco-Oakland Bay Bridge. It contains transport infrastructure, a small residential community and public viewpoints over the bay.

The island’s most visible feature is the Bay Bridge interchange and associated roadwork that crosses the island; this makes the island a key transport node in the bay area. There are also shoreline paths, parks and a compact residential area with views across to San Francisco, Alcatraz and the East Bay.

Historically the island received its Spanish name and later played roles in military and maritime use; development in the 20th century included construction related to the Bay Bridge and the 1939-40 Golden Gate International Exposition on nearby Treasure Island. Parts of the island have seen recent redevelopment planning.

Yerba Buena Island lies within San Francisco Bay between the city of San Francisco and Treasure Island, directly under the western anchorage of the Bay Bridge and a short distance from downtown San Francisco.

  • Bridge and connection to Treasure Island: The island is located at the western end of the San Francisco-Oakland Bay Bridge and is connected to Treasure Island by an isthmus created when Treasure Island was built for the 1939 exposition.

What to See #

  • Bay Bridge interchange: The Bay Bridge road and ramp complex that passes directly over the island and contains key bridge junctions linking San Francisco to the East Bay.
  • Residential neighbourhood and viewpoints: A small residential neighbourhood and shoreline areas with walking paths and viewpoints offering panoramic views of the San Francisco skyline and bay.
Yerba Buena Island
Yerba Buena Island, San Francisco Bay, California, USA
37.8105, -122.3666

How to Get to Yerba Buena Island #

Yerba Buena Island is connected to Treasure Island and San Francisco via the Bay Bridge. Public bus routes serve Treasure Island with short walks or shuttles to parts of Yerba Buena; driving access is via Interstate 80/280 and the Bay Bridge approaches. Cycling and pedestrian access are available on scheduled paths.

Tips for Visiting Yerba Buena Island #

  • Walk the short trail to the island's summit park for the best skyline views of San Francisco and the Bay Bridge.
  • Note that the island is partially public and partially restricted - some areas are fenced or used for utilities; respect posted signage.
  • If arriving by car, park on the bridge approaches; otherwise use the bus system or bicycle from San Francisco proper.

Best Time to Visit Yerba Buena Island #

Best visited in late summer and autumn for clearer skies and milder weather; mornings can be foggy in summer.

Summer/Fall
June-October · 15-25°C
Often clearer skies due to the local microclimate; late summer and fall can be pleasantly warm.
Spring
March-May · 10-18°C
Cooler and sometimes windy; good for quieter visits.

Weather & Climate near Yerba Buena Island #

Climate

Temperate climate with mild summers (peaking in September) and cool winters (coldest in January). Temperatures range from 7°C to 24°C. Moderate rainfall (818 mm/year) with a pronounced dry season.

Temperature & Rainfall
Temperature Range
24°
Warmest Month
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 14°C and lows of 7°C. Significant rainfall (137 mm).

Comfort

11°
Feels Like Cool
11°C
Temperature
14°

Weather

137 mm
Rainfall
3.6 m/s
Wind
Light Breeze

February

February is cool with highs of 16°C and lows of 8°C. Significant rainfall (136 mm).

Comfort

12°
Feels Like Cool
12°C
Temperature
16°

Weather

136 mm
Rainfall
3.9 m/s
Wind
Light Breeze

March

March is cool with highs of 17°C and lows of 9°C. The wettest month with heavy rain (158 mm).

Comfort

13°
Feels Like Cool
13°C
Temperature
17°

Weather

158 mm
Rainfall
4.3 m/s
Wind
Light Breeze

April

April is cool with highs of 19°C and lows of 9°C. Moderate rainfall (79 mm).

Comfort

14°
Feels Like Cool
14°C
Temperature
19°

Weather

79 mm
Rainfall
4.6 m/s
Wind
Light Breeze

May

May is cool with highs of 21°C and lows of 11°C. Light rainfall.

Comfort

16°
Feels Like Cool
16°C
Temperature
11° 21°

Weather

22 mm
Rainfall
4.9 m/s
Wind
Light Breeze

June

June is cool with highs of 22°C and lows of 12°C. Almost no rain.

Comfort

17°
Feels Like Cool
17°C
Temperature
12° 22°

Weather

6 mm
Rainfall
4.9 m/s
Wind
Light Breeze

July

July is cool with highs of 23°C and lows of 13°C. The driest month with just 3 mm.

Comfort

18°
Feels Like Cool
18°C
Temperature
13° 23°

Weather

3 mm
Rainfall
4.5 m/s
Wind
Light Breeze

August

August is mild with highs of 23°C and lows of 13°C. The driest month with just 3 mm.

Comfort

18°
Feels Like Mild
18°C
Temperature
13° 23°

Weather

3 mm
Rainfall
4.3 m/s
Wind
Light Breeze

September

September is the warmest month with highs of 24°C and lows of 13°C. Light rainfall.

Comfort

19°
Feels Like Mild
19°C
Temperature
13° 24°

Weather

11 mm
Rainfall
3.9 m/s
Wind
Light Breeze

October

October is cool with highs of 22°C and lows of 12°C. Moderate rainfall (60 mm).

Comfort

17°
Feels Like Cool
17°C
Temperature
12° 22°

Weather

60 mm
Rainfall
3.6 m/s
Wind
Light Breeze

November

November is cool with highs of 18°C and lows of 9°C. Regular rainfall (99 mm).

Comfort

14°
Feels Like Cool
14°C
Temperature
18°

Weather

99 mm
Rainfall
3.5 m/s
Wind
Light Breeze

December

December is cool with highs of 14°C and lows of 7°C. Significant rainfall (104 mm).

Comfort

11°
Feels Like Cool
11°C
Temperature
15°

Weather

104 mm
Rainfall
3.6 m/s
Wind
Light Breeze

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