Barometric Pressure in San Diego, United States 
1012.2 hPa
19 ℃
78%
0.81 m/s
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The average pressure in San Diego, California, United States today is , which is considered normal. Pressure is trending steady.
Weather prediction: Fairly fine, showers likely
The daily total fluctuation in pressure in San Diego is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in San Diego hour by hour across the next 6 hourly readings.
The barometric pressure in San Diego is influenced by its coastal location. The pressure is relatively stable throughout the year. It's affected by the temperature of the Pacific Ocean. This stability is due to the ocean's ability to absorb and release heat slowly.
San Diego is surrounded by mountains to the east and the Pacific Ocean to the west. The mountains block cold air from the east. They also force warm air to rise, cool, and condense, resulting in precipitation. The ocean's warm waters keep the air humid and mild.
The city's landscape creates a rain shadow effect, making it relatively dry. The surrounding mountains and ocean also reduce the impact of extreme weather conditions. This results in a mild and pleasant climate overall.