Average Weather in Isla Vista California, United States
In Isla Vista, the summers are comfortable and clear and the winters are cool and partly cloudy. Over the course of the year, the temperature typically varies from 44°F to 74°F and is rarely below 36°F or above 82°F.
The warm season lasts for 3.6 months, from July 2 to October 21, with an average daily high temperature above 72°F. The hottest day of the year is August 26, with an average high of 74°F and low of 58°F.
The cool season lasts for 3.4 months, from December 4 to March 15, with an average daily high temperature below 65°F. The coldest day of the year is January 31, with an average low of 44°F and high of 64°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Isla Vista, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Isla Vista begins around April 26 and lasts for 6.2 months, ending around November 2. On August 9, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 92% of the time, and overcast or mostly cloudy 8% of the time.
The cloudier part of the year begins around November 2 and lasts for 5.8 months, ending around April 26. On February 23, the cloudiest day of the year, the sky is overcast or mostly cloudy 44% of the time, and clear, mostly clear, or partly cloudy 56% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Isla Vista varies throughout the year.
The wetter season lasts 4.3 months, from November 20 to March 30, with a greater than 11% chance of a given day being a wet day. The chance of a wet day peaks at 22% on February 20.
The drier season lasts 7.7 months, from March 30 to November 20. The smallest chance of a wet day is 0% on July 28.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 22% on February 20.
Daily Chance of Precipitation
The length of the day in Isla Vista varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 51 minutes of daylight; the longest day is June 21, with 14 hours, 28 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:46 AM on June 12, and the latest sunrise is 1 hour, 36 minutes later at 7:22 AM on November 4. The earliest sunset is at 4:48 PM on December 4, and the latest sunset is 3 hours, 27 minutes later at 8:15 PM on June 28.
Daylight saving time (DST) is observed in Isla Vista during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Isla Vista, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 1% of 1% throughout.
Humidity Comfort Levels
The average hourly wind speed in Isla Vista experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.8 months, from January 29 to June 23, with average wind speeds of more than 4.4 miles per hour. The windiest day of the year is April 26, with an average hourly wind speed of 5.2 miles per hour.
The calmer time of year lasts for 7.2 months, from June 23 to January 29. The calmest day of the year is August 9, with an average hourly wind speed of 3.7 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Isla Vista varies throughout the year.
The wind is most often from the west for 2.7 months, from June 5 to August 28, with a peak percentage of 51% on July 23. The wind is most often from the north for 9.2 months, from August 28 to June 5, with a peak percentage of 44% on January 1.
Isla Vista is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.8 months, from July 11 to November 4, with an average temperature above 62°F. The day of the year with the warmest water is September 16, with an average temperature of 64°F.
The time of year with cooler water lasts for 4.6 months, from January 6 to May 26, with an average temperature below 57°F. The day of the year with the coolest water is April 16, with an average temperature of 56°F.
Average Water Temperature
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.9 months, from April 26 to August 23, with an average daily incident shortwave energy per square meter above 7.4 kWh. The brightest day of the year is June 18, with an average of 8.6 kWh.
The darker period of the year lasts for 3.3 months, from November 5 to February 13, with an average daily incident shortwave energy per square meter below 4.0 kWh. The darkest day of the year is December 26, with an average of 2.8 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Isla Vista are 34.413 deg latitude, -119.861 deg longitude, and 0 ft elevation.
The topography within 2 miles of Isla Vista contains only modest variations in elevation, with a maximum elevation change of 118 feet and an average elevation above sea level of 17 feet. Within 10 miles contains only modest variations in elevation (3,986 feet). Within 50 miles also contains extreme variations in elevation (8,816 feet).
The area within 2 miles of Isla Vista is covered by artificial surfaces (45%), water (38%), and cropland (12%), within 10 miles by water (53%) and trees (15%), and within 50 miles by water (46%) and shrubs (27%).
This report illustrates the typical weather in Isla Vista, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Isla Vista.
For each station, the records are corrected for the elevation difference between that station and Isla Vista according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Isla Vista is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Isla Vista and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .