San Nicolas Island, CA Climate

Summary Graph

The summary climate graph for San Nicolas Island, CA shows a selection of temperature, rainfall and snow minimum, mean and maximum measures over the course of a year. Click on each of the measures in the key to toggle them on and off.

Graph of average and extreme temperature ranges by day for San Nicolas Island, CA.


The warmest month in San Nicolas Island Nolf, San Nicolas Island, California is September with an average high temperature of 73.2°F. The hottest day on record was October 1 2012 when the temperature hit 111.9°F. During January the overnight temperature drops to an average of 50.4°F with the lowest temperature of 25.2°F being recorded on March 25 1992.

Warmest Days

Warmest Months

Coldest Days

Coldest Months

The warmest days on record are:

1 Oct 2012111.9°F
27 Aug 2009108°F
19 Jun 2008107.1°F
4 Nov 2012102°F
23 Sep 2012100.9°F

The warmest months on average were:

October 201288.3°F
November 201281.8°F
September 198481.8°F
September 201280.8°F
October 200879.3°F

The coldest days on record are:

25 Mar 199225.2°F
1 Jul 197630.2°F
19 May 197730.2°F
30 Jan 197832°F
8 Oct 199232.9°F

The coldest months on average were:

March 197644.4°F
April 197744.8°F
December 197844.8°F
February 201145.3°F
January 198945.6°F


The wettest month in San Nicolas Island, CA is January with an average of 1.0 inches of rain falling on 5 to 5 days. The driest month by average rainfall in San Nicolas Island, CA is September with an average of 0.2 inches of rain falling on 1 to 2 days. Although in August it typically rains on less days with 0.3 inches falling in 0 to 1 days

Wettest Days

The wettest days on record are:

15 January 19790.9 inches
7 January 20080.9 inches
13 January 19930.8 inches
31 January 20070.8 inches
9 January 19800.8 inches

Wettest Months

The wettest months on record are:

February 19833.7 inches
February 19803.2 inches
January 20082.9 inches
January 19792.9 inches
January 19802.7 inches

Driest Months

The driest months on record are:

July 19430 inches
August 19430 inches
September 19430 inches
October 19430 inches
November 19430 inches