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

In Carlsbad, August is the warmest month, with temperatures averaging a high of 78.6°F (25.9°C) and a low of 64.2°F (17.9°C).

Humidity

The average relative humidity in August is 69%.

Rainfall

In Carlsbad, in August, it is raining for 4.3 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, there are 68.2 rainfall days, and 9.49" (241mm) of precipitation is accumulated.

Ocean temperature

July and August, with an average ocean temperature of 68°F (20°C), are months with the warmest seawater.
Note: The majority find it unenjoyable to swim in 68°F (20°C). Breathing becomes tougher as the water temperature descends under 69.8°F (21°C).

Daylight

In August, the average length of the day 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, sunrise is at 6:23 am and sunset at 7:15 pm PDT.

Sunshine

The months with the most sunshine are July and August, with an average of 12h of 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 the average person.
Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

With its average high temperature of 78.6°F (25.9°C) and a low of 64.2°F (17.9°C), August is regarded as the warmest month.

What are the temperatures in August?

The high-temperature, in August, in Carlsbad, records 78.6°F (25.9°C), while the low-temperature is 64.2°F (17.9°C).

What is the average humidity in August?

In August, the average relative humidity is 69%.

How many days does it rain in August in Carlsbad?

In Carlsbad, during August, the rain falls for 4.3 days and regularly aggregates up to 0.35" (9mm) of precipitation.

What are the months with the warmest ocean?

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

What is the ocean temperature in August?

In Carlsbad, in August, the average water temperature is 68°F (20°C). For swimming, a surface water temperature of 68°F (20°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).

What is the average length of the day in August?

In August, the average day length is 13h and 20min.

What time are sunrise and sunset in August?

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

What is the month with the most sunshine?

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

How long on average sun shines in August?

The average sunshine duration in August is 12h.

What is the month with the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's 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).

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).

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).

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%).

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").

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).

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).

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).

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).

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).

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).

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).

Carlsbad, California, USA

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