March weather forecast and climate
Half Moon Bay, CA

A warm and sunny day on a scenic beach in Half Moon Bay, California
A warm and sunny day on a scenic beach in Half Moon Bay, California

Weather in March

March, the first month of the spring, in Half Moon Bay, is also a moderate month, with average temperature ranging between max 57.7°F (14.3°C) and min 49.3°F (9.6°C).

Temperature

In Half Moon Bay, the average high-temperature in March is practically the same as in February - a still moderate 57.7°F (14.3°C). In Half Moon Bay, the average low-temperature is 49.3°F (9.6°C).

Humidity

In Half Moon Bay, the average relative humidity is 77%.

Rainfall

In Half Moon Bay, in March, it is raining for 10.8 days, with typically 1.38" (35mm) of accumulated precipitation. Throughout the year, in Half Moon Bay, there are 76.8 rainfall days, and 8.54" (217mm) of precipitation is accumulated.

Daylight

In Half Moon Bay, the average length of the day is 12h.

Sunshine

In March, the average sunshine in Half Moon Bay is 7.7h.

UV index

Months with the lowest UV index are January through May, July, October through December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 4 interpret into the following advice:
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 temperature in March in Half Moon Bay?

In Half Moon Bay, in March, the average high-temperature is 57.7°F (14.3°C), and the average low-temperature is 49.3°F (9.6°C).

What is the average humidity in March in Half Moon Bay?

The average relative humidity in March is 77%.

How many days does it rain in March in Half Moon Bay?

In Half Moon Bay, during March, the rain falls for 10.8 days and regularly aggregates up to 1.38" (35mm) of precipitation.

What is the average length of the day in March in Half Moon Bay?

The average length of the day in March is 12h.

How long on average sun shines in March in Half Moon Bay?

The average sunshine in March in Half Moon Bay is 7.7h.

What is the month with the lowest UV index in Half Moon Bay?

January through May, July, October through December, with an average maximum UV index of 4, are months with the lowest UV index in Half Moon Bay, California.

What is the UV index intensity in March in Half Moon Bay?

The average daily maximum UV index in March is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in March
Half Moon Bay, CA

Average temperature in March - Half Moon Bay, CA
  • Average high temperature in March: 57.7°F

The warmest month (with the highest average high temperature) is September (66.9°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in March: 49.3°F

The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).

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Average pressure in March
Half Moon Bay, CA

Average pressure in March - Half Moon Bay, CA
  • Average pressure in March: 30.07"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.92").

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Average wind speed in March
Half Moon Bay, CA

Average wind speed in March - Half Moon Bay, CA
  • Average wind speed in March: 9.1mph

The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in March
Half Moon Bay, CA

Average humidity in March - Half Moon Bay, CA
  • Average humidity in March: 77%

The month with the highest relative humidity is August (82%).
Months with the lowest relative humidity are November and December (72%).

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Average rainfall in March
Half Moon Bay, CA

Average rainfall in March - Half Moon Bay, CA
  • Average rainfall in March: 1.38"

The wettest month (with the highest rainfall) is February (1.61").
The driest months (with the least rainfall) are June and July (0.12").

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Average rainfall days in March
Half Moon Bay, CA

Average rainfall days in March - Half Moon Bay, CA
  • Average rainfall days in March: 10.8 days

The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is June (3 days).

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Average daylight in March /
Average sunshine in March
Half Moon Bay, CA

Average daylight in March / Average sunshine in March - Half Moon Bay, CA
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in March: 7.7h

The month with the most sunshine is July (Average sunshine: 11.4h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in March
Half Moon Bay, CA

Average sunshine days in March - Half Moon Bay, CA
  • Average sunshine days in March: 18.8 days

The month with the most sunshine days is October (24.6 days).
Months with the least sunshine days are March and August (18.8 days).

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Average UV index in March
Half Moon Bay, CA

Average UV index in March - Half Moon Bay, CA
  • Average UV index in March: 4

Months with the highest UV index are June, August and September (UV index 5).
Months with the lowest UV index are January, February, March, April, May, July, October, November and December (UV index 4).

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Average cloud cover in March
Half Moon Bay, CA

Average cloud cover in March - Half Moon Bay, CA
  • Average cloud cover in March: 38

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 18).

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Average visibility in March
Half Moon Bay, CA

Average visibility in March - Half Moon Bay, CA
  • Average visibility in March: 6mi

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

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