Average Weather in March in San Diego Costa Rica
In San Diego, the month of March is characterized by essentially constant daily high temperatures, with daily highs around 77°F throughout the month, rarely exceeding 81°F or dropping below 73°F.
Daily low temperatures are around 61°F, rarely falling below 58°F or exceeding 64°F. The lowest daily average low temperature is 61°F on March 11.
For reference, on April 9, the hottest day of the year, temperatures in San Diego typically range from 62°F to 78°F, while on September 19, the coldest day of the year, they range from 61°F to 75°F.
Average High and Low Temperature in March
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on March. 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 March
The month of March in San Diego experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 47% to 60%.
The clearest day of the month is March 1, with clear, mostly clear, or partly cloudy conditions 53% of the time.
For reference, on June 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 96%, while on January 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 63%.
Cloud Cover in March
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In San Diego, the chance of a wet day over the course of March is gradually increasing, starting the month at 9% and ending it at 11%.
For reference, the year's highest daily chance of a wet day is 52% on October 7, and its lowest chance is 7% on March 16.
Probability of Precipitation in March
The average sliding 31-day rainfall during March in San Diego is essentially constant, remaining about 0.9 inches throughout, and rarely exceeding 2.9 inches or falling below -0.0 inches.
The lowest average 31-day accumulation is 0.8 inches on March 16.
Average Monthly Rainfall in March
Over the course of March in San Diego, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 16 minutes, implying an average daily increase of 33 seconds, and weekly increase of 3 minutes, 49 seconds.
The shortest day of the month is March 1, with 11 hours, 56 minutes of daylight and the longest day is March 31, with 12 hours, 13 minutes of daylight.
Hours of Daylight and Twilight in March
The latest sunrise of the month in San Diego is 5:50 AM on March 1 and the earliest sunrise is 16 minutes earlier at 5:33 AM on March 31.
The latest sunset is 5:46 PM on March 13 and the earliest sunset is 22 seconds earlier at 5:46 PM on March 31.
Daylight saving time is not observed in San Diego during 2017.
For reference, on June 21, the longest day of the year, the Sun rises at 5:16 AM and sets 12 hours, 42 minutes later, at 5:59 PM, while on December 21, the shortest day of the year, it rises at 5:47 AM and sets 11 hours, 33 minutes later, at 5:20 PM.
Sunrise & Sunset with Twilight in March
The chance that a given day will be muggy in San Diego is gradually increasing during March, rising from 5% to 9% over the course of the month.
For reference, on June 2, the muggiest day of the year, there are muggy conditions 43% of the time, while on January 24, the least muggy day of the year, there are muggy conditions 2% of the time.
Humidity Comfort Levels in March
The average hourly wind speed in San Diego is essentially constant during March, remaining within 0.2 miles per hour of 1.6 miles per hour throughout.
For reference, on February 5, the windiest day of the year, the daily average wind speed is 1.8 miles per hour, while on June 9, the calmest day of the year, the daily average wind speed is 0.9 miles per hour.
Average Wind Speed in March
Wind Direction in March
San Diego 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 San Diego is essentially constant during March, remaining around 83°F throughout.
Average Water Temperature in March
The average daily incident shortwave solar energy in San Diego is essentially constant during March, remaining within 0.1 kWh of 6.7 kWh throughout.
The highest average daily incident shortwave solar energy during March is 6.8 kWh on March 23.
Average Daily Incident Shortwave Solar Energy in March
For the purposes of this report, the geographical coordinates of San Diego are 9.899 deg latitude, -84.003 deg longitude, and 4,495 ft elevation.
The topography within 2 miles of San Diego contains large variations in elevation, with a maximum elevation change of 2,192 feet and an average elevation above sea level of 4,481 feet. Within 10 miles contains large variations in elevation (6,919 feet). Within 50 miles also contains extreme variations in elevation (12,490 feet).
The area within 2 miles of San Diego is covered by grassland (45%), trees (39%), and cropland (12%), within 10 miles by trees (44%) and grassland (37%), and within 50 miles by trees (55%) and grassland (17%).
This report illustrates the typical weather in San Diego 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 is only a single weather station, Juan Santamaría International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of San Diego.
At a distance of 25 kilometers from San Diego, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and San Diego according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
Time zones for aiports and weather stations are provided by AskGeo.com .