July 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 July

July, the same as June, is another enjoyable summer month in Half Moon Bay, California, with average temperature varying between 65.1°F (18.4°C) and 54.3°F (12.4°C).

Temperature

In Half Moon Bay, California, the average high-temperature is relatively the same as in June - a still comfortable 65.1°F (18.4°C). The average low-temperature, in Half Moon Bay, California, is 54.3°F (12.4°C).

Humidity

The average relative humidity is 81%.

Rainfall

Months with the least rainfall in Half Moon Bay are June and July Rain falls for 4.4 days and accumulates 0.12" (3mm) of rain.

Daylight

The average length of the day in Half Moon Bay is 14.4h.

Sunshine

The month with the most sunshine is July, with an average of 11.4h of sunshine.

UV index

January through May, July, October through December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: In July, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. 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.
[Resources]

FAQ

What is the temperature in July in Half Moon Bay?

In Half Moon Bay, California, in July, the average high-temperature is 65.1°F (18.4°C), and the average low-temperature is 54.3°F (12.4°C).

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

In July, the average relative humidity is 81%.

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

In July, in Half Moon Bay, California, the rain falls for 4.4 days. Throughout July, 0.12" (3mm) of precipitation is accumulated.

What is the driest month in Half Moon Bay?

Months with the least rainfall are June and July Rain falls for 4.4 days and accumulates 0.12" (3mm) of rain.

How many hours of daylight does Half Moon Bay have in July?

In Half Moon Bay, the average length of the day in July is 14.4h.

What month has the most sunshine in Half Moon Bay?

The month with the most sunshine in Half Moon Bay is July, with an average of 11.4h of sunshine.

How many hours of sunshine does Half Moon Bay have in July?

The average sunshine in July in Half Moon Bay, California, is 11.4h.

When is 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.

What is the UV index reading in July in Half Moon Bay?

In Half Moon Bay, California, the average daily maximum UV index in July is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in July
Half Moon Bay, CA

Average temperature in July - Half Moon Bay, CA
  • Average high temperature in July: 65.1°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 July: 54.3°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).

[Resources]

Average pressure in July
Half Moon Bay, CA

Average pressure in July - Half Moon Bay, CA
  • Average pressure in July: 29.94"

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

[Resources]

Average wind speed in July
Half Moon Bay, CA

Average wind speed in July - Half Moon Bay, CA
  • Average wind speed in July: 6.7mph

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).

[Resources]

Average humidity in July
Half Moon Bay, CA

Average humidity in July - Half Moon Bay, CA
  • Average humidity in July: 81%

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

[Resources]

Average rainfall in July
Half Moon Bay, CA

Average rainfall in July - Half Moon Bay, CA
  • Average rainfall in July: 0.12"

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

[Resources]

Average rainfall days in July
Half Moon Bay, CA

Average rainfall days in July - Half Moon Bay, CA
  • Average rainfall days in July: 4.4 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).

[Resources]

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

Average daylight in July / Average sunshine in July - Half Moon Bay, CA
  • Average daylight in July: 14.4h

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 July: 11.4h

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

[Resources]

Average sunshine days in July
Half Moon Bay, CA

Average sunshine days in July - Half Moon Bay, CA
  • Average sunshine days in July: 21.8 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).

[Resources]

Average UV index in July
Half Moon Bay, CA

Average UV index in July - Half Moon Bay, CA
  • Average UV index in July: 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).

[Resources]

Average cloud cover in July
Half Moon Bay, CA

Average cloud cover in July - Half Moon Bay, CA
  • Average cloud cover in July: 21

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

[Resources]

Average visibility in July
Half Moon Bay, CA

Average visibility in July - Half Moon Bay, CA
  • Average visibility in July: 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).

[Resources]