Alcatraz Island
Part of Golden Gate National Recreation Area
Also Known As: The Rock, Yerba Buena, Pelican Island, Bird Island, White Island, Alcatraces Island, Alcatrazes Island, Isla De Alcatraces, Isla De Los Alcatraces, Isle of Alcatraces, and Los Alcatrasses.
Island
Land
County
GPS Coordinates
Elevation
About
Topographic Map
US Topo Map
The USGS (U.S. Geological Survey) publishes a set of the most commonly used topographic maps of the U.S. called US Topo that are separated into rectangular quadrants that are printed at 22.75"x29" or larger. Alcatraz Island is covered by the San Francisco North, CA US Topo Map quadrant
Free US Topo Map PDF Order Waterproof Printed Topo Map
Water Land
Man-madeUS Topo Map Quadrants
The USGS (U.S. Geological Survey) publishes a set of topographic maps of the U.S. commonly known as US Topo Maps. These maps are seperated into rectangular quadrants that are intended to be printed at 22.75"x29" or larger.
The map now contains brown squares outlining nearby US Topo Map quadrants. Clicking anywhere within a quandrant will display an info window with the map name, as well as links to download the map to your computer, or order a waterproof printed map.
Nearby Islands
| 1.8 mi | Point Blunt Rock |
Nearby Cities
| 2 mi | North Beach, CA |
| 4 mi | San Francisco, CA |
| 4 mi | Tiburon, CA |
| 4 mi | Belvedere, CA |
| 4 mi | Sausalito, CA |
Nearby Points of Interest
| 0.1 mi | Alcatraz Island Lighthouse | Man-made |
| 0.6 mi | Alcatraz Shoal | Land |
| 1.0 mi | Arch Rock | Land |
| 1.1 mi | Municipal Pier | Man-made |
| 1.1 mi | Shag Rocks | Land |
What activities are at Alcatraz Island?
Can you describe Alcatraz Island?
Historical Weather
Below are weather averages from 1971 to 2000 according to data gathered from the nearest official weather station. The nearest weather station for both precipitation and temperature measurements is SAN FRANCISCO DOWNT which is approximately 4 miles away and has an elevation of 175 feet (63 feet higher than Alcatraz Island). Because the nearest station and this geographic feature may have differences in elevation and topography, the historic weather at the two separate locations may be different as well.
Average Daily Temperatures by Month (°F)
Average Monthly Precipitation (in inches)
| Month | Precip | AVG High Temp |
AVG Low Temp |
|---|---|---|---|
| Jan | 4.72" | 58.1° | 46.4° |
| Feb | 4.15" | 61.4° | 48.5° |
| Mar | 3.40" | 62.5° | 49.2° |
| Apr | 1.25" | 64.5° | 50.1° |
| May | .54" | 65.4° | 51.4° |
| Jun | .13" | 67.7° | 53.2° |
| Jul | .04" | 68.2° | 54.4° |
| Aug | .09" | 69.2° | 55.6° |
| Sep | .28" | 71.3° | 56.1° |
| Oct | 1.19" | 70.4° | 54.6° |
| Nov | 3.31" | 64.1° | 50.8° |
| Dec | 3.18" | 58.6° | 46.7° |
Summer High Temps
This location's average summer high temps are lower than 97% of other locations on record.
Winter Low Temps
This location's average winter low temps are higher than 98% of other locations on record.
Precipitation Levels
This location's average precipitation levels are lower than 71% of other locations on record.
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