September weather forecast and climate
Encinitas, CA

Weather in September

September, the first month of the autumn, in Encinitas, is still a warm month, with average temperature varying between 64.6°F (18.1°C) and 76.3°F (24.6°C).

Temperature

In September, the average high-temperature is practically the same as in August - a still moderately hot 76.3°F (24.6°C). In Encinitas, in September, the average low-temperature is 64.6°F (18.1°C).

Humidity

In September, the average relative humidity is 69%.

Rainfall

In Encinitas, California, during September, the rain falls for 4.3 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Encinitas, California, during the entire year, the rain falls for 63.5 days and collects up to 6.65" (169mm) of precipitation.

Ocean temperature

In Encinitas, California, the average seawater temperature is 66.9°F (19.4°C).
Note: Swimming in 66.9°F (19.4°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

In Encinitas, the average length of the day is 12.4h.

Sunshine

The average sunshine in Encinitas is 10.4h.

UV index

In Encinitas, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Encinitas?

In Encinitas, California, in September, the average high-temperature is 76.3°F (24.6°C), and the average low-temperature is 64.6°F (18.1°C).

What is the average humidity in September in Encinitas?

In Encinitas, California, the average relative humidity in September is 69%.

How much does it rain in Encinitas in September?

In September, the rain falls for 4.3 days. Throughout September, 0.31" (8mm) of precipitation is accumulated.

What is the ocean temperature in September in Encinitas?

In Encinitas, California, the average seawater temperature in September is 66.9°F (19.4°C). For most, swimming in 66.9°F (19.4°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).

What is the average length of the day in September in Encinitas?

In September, the average length of the day is 12.4h.

How long on average sun shines in September in Encinitas?

In September, the average sunshine is 10.4h.

What is the UV index intensity in September in Encinitas?

In Encinitas, California, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in September
Encinitas, CA

Average temperature in September - Encinitas, CA
  • Average high temperature in September: 76.3°F

The warmest month (with the highest average high temperature) is August (76.5°F).
Months with the lowest average high temperature are February and December (62.6°F).

  • Average low temperature in September: 64.6°F

The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).

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Average pressure in September
Encinitas, CA

Average pressure in September - Encinitas, CA
  • Average pressure in September: 29.88"

The month with the highest atmospheric pressure is January (30.09").
Months with the lowest atmospheric pressure are June and September (29.88").

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Average wind speed in September
Encinitas, CA

Average wind speed in September - Encinitas, CA
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).

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Average humidity in September
Encinitas, CA

Average humidity in September - Encinitas, CA
  • Average humidity in September: 69%

The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (60%).

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Average rainfall in September
Encinitas, CA

Average rainfall in September - Encinitas, CA
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days in September
Encinitas, CA

Average rainfall days in September - Encinitas, CA
  • Average rainfall days in September: 4.3 days

The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is October (3.4 days).

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Average sea temperature in September
Encinitas, CA

Average sea temperature in September - Encinitas, CA
  • Average sea temperature in September: 66.9°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 September /
Average sunshine in September
Encinitas, CA

Average daylight in September / Average sunshine in September - Encinitas, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 10.4h

Months with the most sunshine are July and August (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in September
Encinitas, CA

Average sunshine days in September - Encinitas, CA
  • Average sunshine days in September: 22.1 days

The month with the most sunshine days is October (24.9 days).
The month with the least sunshine days is July (19.8 days).

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Average UV index in September
Encinitas, CA

Average UV index in September - Encinitas, CA
  • Average UV index in September: 5

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in September
Encinitas, CA

Average cloud cover in September - Encinitas, CA
  • Average cloud cover in September: 12

Months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in September
Encinitas, CA

Average visibility in September - Encinitas, CA
  • Average visibility in September: 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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