March weather forecast
Santa Monica, CA

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The neon-lit fun park in Santa Monica, California, with a view of the iconic Ferris wheel and pier
The neon-lit fun park in Santa Monica, California, with a view of the iconic Ferris wheel and pier

Weather in March

The first month of the spring, March, is also an enjoyable month in Santa Monica, California, with an average temperature fluctuating between 66.7°F (19.3°C) and 51.4°F (10.8°C).

Temperature

During March, Santa Monica observes a subtle ascent to a still enjoyable 66.7°F (19.3°C) from February's 64.6°F (18.1°C) in the average high-temperature. In Santa Monica, March nights witness a steady temperature drop to a fresh 51.4°F (10.8°C).

Humidity

The average relative humidity in March is 62%.

Rainfall

In Santa Monica, during March, the rain falls for 6.8 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Santa Monica, during the entire year, the rain falls for 48.8 days and collects up to 7.52" (191mm) of precipitation.

Ocean temperature

January through May and December, with an average ocean temperature of 59°F (15°C), are months with the coldest seawater.
Note: For swimming, a surface water temperature of 59°F (15°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In Santa Monica, the average length of the day in March is 12h and 0min.
On the first day of March, sunrise is at 6:21 am and sunset at 5:50 pm PST. On the last day of the month, sunrise is at 6:41 am and sunset at 7:14 pm PDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from PDT to PST.

Sunshine

In March, the average sunshine is 8.8h.

UV index

The average daily maximum UV index in March in Santa Monica is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 5 during March leads to these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average March temperature in Santa Monica?

In March, the average high-temperature and low-temperature are 66.7°F (19.3°C) and 51.4°F (10.8°C) respectively.

What is the average humidity in March?

In March, the average relative humidity is 62%.

How much does it rain in March?

In Santa Monica, during March, the rain falls for 6.8 days and regularly aggregates up to 1.14" (29mm) of precipitation.

When is the ocean coldest?

January through May and December, with an average ocean temperature of 59°F (15°C), are months with the coldest seawater.

How cold is the water in March?

In Santa Monica, in March, the average water temperature is 59°F (15°C). Swimming in 59°F (15°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in March?

In March, the average day length is 12h and 0min.

When is the sunrise / sunset in March?

On the first day of March, sunrise is at 6:21 am and sunset at 5:50 pm PST. On the last day of the month, sunrise is at 6:41 am and sunset at 7:14 pm PDT.

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

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March?

In March, the average sunshine duration is 8.8h.

What is the UV index reading in March?

In March, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Santa Monica, CA

Average temperature in March - Santa Monica, CA
  • Average high temperature in March: 66.7°F

The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (63.9°F).

  • Average low temperature in March: 51.4°F

The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (50.5°F).

Average pressure in March
Santa Monica, CA

Average pressure in March - Santa Monica, CA
  • Average pressure in March: 30.04"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).

Average wind speed in March
Santa Monica, CA

Average wind speed in March - Santa Monica, CA
  • Average wind speed in March: 5.9mph

The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).

Average humidity in March
Santa Monica, CA

Average humidity in March - Santa Monica, CA
  • Average humidity in March: 62%

The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (52%).

Average rainfall in March
Santa Monica, CA

Average rainfall in March - Santa Monica, CA
  • Average rainfall in March: 1.14"

The wettest month (with the highest rainfall) is January (1.54").
The driest months (with the least rainfall) are June and August (0.08").

Average rainfall days in March
Santa Monica, CA

Average rainfall days in March - Santa Monica, CA
  • Average rainfall days in March: 6.8 days

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is August (1.8 days).

Average sea temperature in March
Santa Monica, CA

Average sea temperature in March - Santa Monica, CA
  • Average sea temperature in March: 59°F

The best months for swimming (with the highest average sea temperature) are August, September and October (66°F).
The coldest months (with the lowest average sea temperature) are January, February, March, April, May and December (59°F).

Average daylight in March /
Average sunshine in March
Santa Monica, CA

Average daylight in March / Average sunshine in March - Santa Monica, CA
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in March: 8h and 5min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The months with the least sunshine are February and December (Average sunshine: 6h and 36min).

Average sunshine days in March
Santa Monica, CA

Average sunshine days in March - Santa Monica, CA
  • Average sunshine days in March: 23.6 days

The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is February (21.8 days).

Average UV index in March
Santa Monica, CA

Average UV index in March - Santa Monica, CA
  • Average UV index in March: 5

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

Average cloud cover in March
Santa Monica, CA

Average cloud cover in March - Santa Monica, CA
  • Average cloud cover in March: 23

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).

Average visibility in March
Santa Monica, CA

Average visibility in March - Santa Monica, 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).

Santa Monica, California, USA

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