August weather forecast
Carlsbad, CA

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The skyline and clear coastline of Carlsbad in California
The skyline and clear coastline of Carlsbad in California

Weather in August

August maintains July's climate trend, designating it as the peak summer month in Carlsbad. Sunny days, lesser cloud cover, and a decrease in wind speed define the weather. Outdoor enthusiasts can enjoy a variety of activities under a sky lit by an average of 13.3 hours of daylight. Temperatures escalate, setting the record high for the year at 78.6°F (25.9°C). Additionally, it is an ideal time for water sports with sea temperatures reaching their yearly maximum.

Temperature

August, with its high-temperature average of 78.6°F (25.9°C) and a low-temperature average of 64.2°F (17.9°C), is the warmest month in Carlsbad.

Humidity

In August, the average relative humidity in Carlsbad, California, is 69%.

Rainfall

In Carlsbad, California, in August, it is raining for 4.3 days, with typically 0.35" (9mm) of accumulated precipitation. In Carlsbad, California, during the entire year, the rain falls for 68.2 days and collects up to 9.49" (241mm) of precipitation.

Ocean temperature

The months with the warmest seawater are July and August, with an average ocean temperature of 68°F (20°C).
Note: Swimming in 68°F (20°C) is not an enjoyable experience for most. Breathing becomes progressively more challenging as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In August, the average length of the day in Carlsbad is 13h and 20min.
On the first day of the month, sunrise is at 6:03 am and sunset at 7:48 pm. On the last day of August, in Carlsbad, sunrise is at 6:23 am and sunset at 7:15 pm PDT.

Sunshine

July and August, with an average of 12h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are July through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 6 during August leads to these instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

What part of the year is the hottest in Carlsbad?

With average high temperatures of 78.6°F (25.9°C) and lows of 64.2°F (17.9°C), August is the warmest month in Carlsbad.

What are August temperatures in Carlsbad?

August temperatures in Carlsbad vary between a high-temperature of 78.6°F (25.9°C) and a low-temperature of 64.2°F (17.9°C).

What is the average humidity in August in Carlsbad?

The average relative humidity in August is 69%.

How much does it rain in Carlsbad in August?

In Carlsbad, in August, it is raining for 4.3 days, with typically 0.35" (9mm) of accumulated precipitation.

What are the months with the warmest ocean in Carlsbad?

The months with the warmest seawater in Carlsbad, California, are July and August, with an average ocean temperature of 68°F (20°C).

How cold is the water in August in Carlsbad?

In August, the average ocean temperature in Carlsbad, California, is 68°F (20°C). For most, swimming in 68°F (20°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 Carlsbad have in August?

The average day length in August in Carlsbad is 13h and 20min.

When are sunrise and sunset in August in Carlsbad?

In August, on the first day of the month, sunrise is at 6:03 am and sunset at 7:48 pm. On the last day of the month, in Carlsbad, California, sunrise is at 6:23 am and sunset at 7:15 pm PDT.

What are the months with the most sunshine in Carlsbad?

The months with the most sunshine in Carlsbad, California, are July and August, with an average of 12h of sunshine.

How many hours of sunshine does Carlsbad have in August?

In Carlsbad, California, the average sunshine duration in August is 12h.

What are the months with the highest UV index in Carlsbad?

July through September, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in August in Carlsbad?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Carlsbad, CA

Average temperature in August - Carlsbad, CA
  • Average high temperature in August: 78.6°F

The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (62.4°F).

  • Average low temperature in August: 64.2°F

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).

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Average pressure in August
Carlsbad, CA

Average pressure in August - Carlsbad, CA
  • Average pressure in August: 29.89"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 August
Carlsbad, CA

Average wind speed in August - Carlsbad, CA
  • Average wind speed in August: 5mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).

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Average humidity in August
Carlsbad, CA

Average humidity in August - Carlsbad, CA
  • Average humidity in August: 69%

The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (60%).

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Average rainfall in August
Carlsbad, CA

Average rainfall in August - Carlsbad, CA
  • Average rainfall in August: 0.35"

The wettest month (with the highest rainfall) is December (1.97").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days in August
Carlsbad, CA

Average rainfall days in August - Carlsbad, CA
  • Average rainfall days in August: 4.3 days

The month with the highest number of rainy days is March (8 days).
The month with the least rainy days is June (2.7 days).

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Average sea temperature in August
Carlsbad, CA

Average sea temperature in August - Carlsbad, CA
  • Average sea temperature in August: 68°F

The best month for swimming (with the highest average sea temperature) is August (68°F).
The coldest months (with the lowest average sea temperature) are January and February (58.7°F).

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Average daylight in August /
Average sunshine in August
Carlsbad, CA

Average daylight in August / Average sunshine in August - Carlsbad, CA
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in August: 12h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in August
Carlsbad, CA

Average sunshine days in August - Carlsbad, CA
  • Average sunshine days in August: 21.8 days

The month with the most sunshine days is October (24.2 days).
The month with the least sunshine days is February (20 days).

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Average UV index in August
Carlsbad, CA

Average UV index in August - Carlsbad, CA
  • Average UV index in August: 6

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 August
Carlsbad, CA

Average cloud cover in August - Carlsbad, CA
  • Average cloud cover in August: 8

The month with the most cloud cover is December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in August
Carlsbad, CA

Average visibility in August - Carlsbad, CA
  • Average visibility in August: 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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Carlsbad, California, USA

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