March weather forecast
San Diego, CA

Coronado Island in San Diego, California, USA,
Coronado Island in San Diego, California, USA,

Weather in March

The first month of the spring, March, is still a comfortable month in San Diego, California, with an average temperature ranging between min 52.7°F (11.5°C) and max 64.4°F (18°C).

Temperature

In March, the average high-temperature is essentially the same as in February - a still comfortable 64.4°F (18°C). In San Diego, the average low-temperature is 52.7°F (11.5°C).

Humidity

In March, the average relative humidity is 68%.

Rainfall

In San Diego, it is raining for 7.6 days, with typically 0.83" (21mm) of accumulated precipitation. In San Diego, during the entire year, the rain falls for 61.8 days and collects up to 8.7" (221mm) of precipitation.

Ocean temperature

In San Diego, the average water temperature is 59.4°F (15.2°C).
Note: For most, swimming in 59.4°F (15.2°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In March, the average length of the day in San Diego is 12h and 1min.
On the first day of the month, sunrise is at 6:15 am and sunset at 5:45 pm PST. On the last day of March, sunrise is at 6:37 am and sunset at 7:08 pm PDT.
Note: On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time lasts until Sunday, November 6. 2022, at 2:00 am; consequently, the time zone reverts from PDT to PST.

Sunshine

In March, the average sunshine is 8.7h.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 4 in March transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in March in San Diego?

The average relative humidity in March in San Diego, California, is 68%.

How many days does it rain in March in San Diego?

In San Diego, in March, it is raining for 7.6 days, with typically 0.83" (21mm) of accumulated precipitation.

What is the ocean temperature in March in San Diego?

In San Diego, the average seawater temperature in March is 59.4°F (15.2°C). For most, swimming in 59.4°F (15.2°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does San Diego have in March?

In San Diego, the average day length in March is 12h and 1min.

When are sunrise and sunset in March in San Diego?

In March, on the first day of the month, sunrise is at 6:15 am and sunset at 5:45 pm PST. On the last day of the month, sunrise is at 6:37 am and sunset at 7:08 pm PDT.

When does Daylight Saving Time (DST) start in March in San Diego?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in San Diego, California, and the time zone changes from PST to PDT. DST ends Sunday, November 6. 2022, at 2:00 am.

How many hours of sunshine does San Diego have in March?

In March, the average sunshine duration in San Diego, California, is 8.7h.

When is the lowest UV index in San Diego?

The months with the lowest UV index in San Diego are January through March, November and December, with an average maximum UV index of 4.

How high is the UV index in March in San Diego?

The average daily maximum UV index in March in San Diego, California, is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
San Diego, CA

Average temperature in March - San Diego, CA
  • Average high temperature in March: 64.4°F

The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is February (63.1°F).

  • Average low temperature in March: 52.7°F

The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).

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Average pressure in March
San Diego, CA

Average pressure in March - San Diego, CA
  • Average pressure in March: 30.02"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).

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Average wind speed in March
San Diego, CA

Average wind speed in March - San Diego, CA
  • Average wind speed in March: 6mph

The windiest months (with the highest average wind speed) are April and May (6.3mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).

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Average humidity in March
San Diego, CA

Average humidity in March - San Diego, CA
  • Average humidity in March: 68%

The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (59%).

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Average rainfall in March
San Diego, CA

Average rainfall in March - San Diego, CA
  • Average rainfall in March: 0.83"

The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days in March
San Diego, CA

Average rainfall days in March - San Diego, CA
  • Average rainfall days in March: 7.6 days

The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (2.7 days).

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Average sea temperature in March
San Diego, CA

Average sea temperature in March - San Diego, CA
  • Average sea temperature in March: 59.4°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).

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Average daylight in March /
Average sunshine in March
San Diego, CA

Average daylight in March / Average sunshine in March - San Diego, CA
  • Average daylight in March: 12h and 1min

The month with the longest days is June (Average daylight: 14h and 16min).
The month with the shortest days is December (Average daylight: 10h and 2min).

  • Average sunshine in March: 8h and 42min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in March
San Diego, CA

Average sunshine days in March - San Diego, CA
  • Average sunshine days in March: 22.4 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (20.3 days).

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Average UV index in March
San Diego, CA

Average UV index in March - San Diego, CA
  • Average UV index in March: 4

The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in March
San Diego, CA

Average cloud cover in March - San Diego, CA
  • Average cloud cover in March: 23

The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in March
San Diego, CA

Average visibility in March - San Diego, CA
  • Average visibility in March: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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