Average Weather in August in Imperial Beach California, United States
Daily high temperatures are around 75°F, rarely falling below 70°F or exceeding 82°F. The highest daily average high temperature is 76°F on August 27.
Daily low temperatures are around 65°F, rarely falling below 60°F or exceeding 70°F. The highest daily average low temperature is 66°F on August 6.
For reference, on August 26, the hottest day of the year, temperatures in Imperial Beach typically range from 65°F to 76°F, while on December 27, the coldest day of the year, they range from 48°F to 64°F.
Average High and Low Temperature in August
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The horizontal axis is the day, 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 August
The month of August in Imperial Beach experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 12% throughout the month.
The clearest day of the month is August 31, with clear, mostly clear, or partly cloudy conditions 89% of the time.
For reference, on February 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 43%, while on September 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%.
Cloud Cover Categories in August
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Imperial Beach, the chance of a wet day over the course of August is essentially constant, remaining around 2% throughout.
For reference, the year's highest daily chance of a wet day is 19% on February 22, and its lowest chance is 0% on June 27.
Probability of Precipitation in August
The average sliding 31-day rainfall during August in Imperial Beach is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.3 inches or falling below -0.0 inches.
Average Monthly Rainfall in August
Over the course of August in Imperial Beach, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 52 minutes, implying an average daily decrease of 1 minute, 44 seconds, and weekly decrease of 12 minutes, 11 seconds.
The shortest day of the month is August 31, with 12 hours, 51 minutes of daylight and the longest day is August 1, with 13 hours, 44 minutes of daylight.
Hours of Daylight and Twilight in August
The earliest sunrise of the month in Imperial Beach is 6:02 AM on August 1 and the latest sunrise is 20 minutes later at 6:22 AM on August 31.
The latest sunset is 7:46 PM on August 1 and the earliest sunset is 32 minutes earlier at 7:14 PM on August 31.
Daylight saving time is observed in Imperial Beach during 2018, but it neither starts nor ends during August, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:41 AM and sets 14 hours, 18 minutes later, at 7:59 PM, while on December 21, the shortest day of the year, it rises at 6:46 AM and sets 10 hours, 0 minutes later, at 4:46 PM.
Sunrise & Sunset with Twilight in August
The chance that a given day will be muggy in Imperial Beach is increasing during August, rising from 14% to 21% over the course of the month.
The highest chance of a muggy day during August is 21% on August 27.
For reference, on August 27, the muggiest day of the year, there are muggy conditions 21% of the time, while on December 19, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in August
The average hourly wind speed in Imperial Beach is essentially constant during August, remaining around 5.9 miles per hour throughout.
For reference, on December 11, the windiest day of the year, the daily average wind speed is 8.2 miles per hour, while on August 23, the calmest day of the year, the daily average wind speed is 5.9 miles per hour.
Average Wind Speed in August
Wind Direction in August
Imperial Beach 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 surface water temperature in Imperial Beach is essentially constant during August, remaining around 69°F throughout.
The highest average surface water temperature during August is 69°F on August 27.
Average Water Temperature in August
Temperatures in Imperial Beach are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season in August
The average accumulated growing degree days in Imperial Beach are rapidly increasing during August, increasing by 598°F, from 2,412°F to 3,010°F, over the course of the month.
Growing Degree Days in August
The average daily incident shortwave solar energy in Imperial Beach is gradually decreasing during August, falling by 0.8 kWh, from 7.7 kWh to 7.0 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in August
For the purposes of this report, the geographical coordinates of Imperial Beach are 32.584 deg latitude, -117.113 deg longitude, and 10 ft elevation.
The topography within 2 miles of Imperial Beach contains only modest variations in elevation, with a maximum elevation change of 102 feet and an average elevation above sea level of 15 feet. Within 10 miles contains only modest variations in elevation (1,142 feet). Within 50 miles contains very significant variations in elevation (6,483 feet).
The area within 2 miles of Imperial Beach is covered by artificial surfaces (56%) and water (33%), within 10 miles by water (44%) and artificial surfaces (41%), and within 50 miles by water (50%) and shrubs (32%).
This report illustrates the typical weather in Imperial Beach year round, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Imperial Beach.
For each station, the records are corrected for the elevation difference between that station and Imperial Beach 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 Imperial Beach is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Imperial Beach and a given station.
The stations contributing to this reconstruction are: Ream Field (93%, 1.9 kilometers, south); Brown Field Municipal Airport (2.9%, 13 kilometers, east); and Naval Air Station North Island (4.3%, 15 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .