September weather forecast
Burlingame, CA

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Weather in September

September, the first month of the autumn in Burlingame, is also an agreeable month, with an average temperature fluctuating between 70.2°F (21.2°C) and 56.8°F (13.8°C).

Temperature

Burlingame reaches its highest average temperatures in September, measuring 70.2°F (21.2°C) at the peak and 56.8°F (13.8°C) at the lowest.

Humidity

In September, the average relative humidity is 73%.

Rainfall

In September, in Burlingame, the rain falls for 3.4 days. Throughout September, 0.16" (4mm) of precipitation is accumulated. In Burlingame, during the entire year, the rain falls for 81.5 days and collects up to 12.8" (325mm) of precipitation.

Ocean temperature

With an average ocean temperature of 57.4°F (14.1°C), September is the month with the warmest seawater in Burlingame.
Note: Taking a dip in 57.4°F (14.1°C) can be perilous. Submersion in temperatures under 50°F (10°C) triggers severe cold shock accompanied by hyperventilation.

Daylight

In September, the average length of the day in Burlingame is 12h and 25min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:53 pm PDT.

Sunshine

The average sunshine in September in Burlingame is 10.9h.

UV index

June through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 5 in September transforms into this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

What part of the year is the hottest in Burlingame?

September is the warmest month of the year in Burlingame, California, registering average temperatures as high as 70.2°F (21.2°C) and as low as 56.8°F (13.8°C).

What is the temperature in September in Burlingame?

The high-temperature, in September, in Burlingame, records 70.2°F (21.2°C), while the low-temperature is 56.8°F (13.8°C).

What is the average humidity in September in Burlingame?

In Burlingame, California, the average relative humidity in September is 73%.

How many days does it rain in September in Burlingame?

In Burlingame, in September, during 3.4 rainfall days, 0.16" (4mm) of precipitation is typically accumulated.

What is the month with the warmest ocean in Burlingame?

September is the month with the warmest seawater in Burlingame, with an average ocean temperature of 57.4°F (14.1°C).

What is the water temperature in September in Burlingame?

In Burlingame, the average seawater temperature in September is 57.4°F (14.1°C). Swimming in 57.4°F (14.1°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Burlingame have in September?

In September, the average day length in Burlingame is 12h and 25min.

When is the sunrise / sunset in September in Burlingame?

In September, on the first day of the month, sunrise is at 6:40 am and sunset at 7:37 pm. On the last day of the month, in Burlingame, California, sunrise is at 7:04 am and sunset at 6:53 pm PDT.

How many hours of sunshine does Burlingame have in September?

The average sunshine duration in September in Burlingame is 10.9h.

When is the highest UV index in Burlingame?

June through September, with an average maximum UV index of 5, are months with the highest UV index in Burlingame, California.

What is the UV index intensity in September in Burlingame?

In September, the average daily maximum UV index in Burlingame, California, is 5. A UV Index of 3 to 5 symbolizes a moderate 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 September
Burlingame, CA

Average temperature in September - Burlingame, CA
  • Average high temperature in September: 70.2°F

The warmest month (with the highest average high temperature) is September (70.2°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in September: 56.8°F

The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (47.5°F).

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Average pressure in September
Burlingame, CA

Average pressure in September - Burlingame, CA
  • Average pressure in September: 29.92"Hg

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

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Average wind speed in September
Burlingame, CA

Average wind speed in September - Burlingame, CA
  • Average wind speed in September: 6.1mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is September (6.1mph).

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Average humidity in September
Burlingame, CA

Average humidity in September - Burlingame, CA
  • Average humidity in September: 73%

The month with the highest relative humidity is August (78%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Burlingame, CA

Average rainfall in September - Burlingame, CA
  • Average rainfall in September: 0.16"

The wettest month (with the highest rainfall) is February (2.44").
The driest month (with the least rainfall) is July (0.08").

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Average rainfall days in September
Burlingame, CA

Average rainfall days in September - Burlingame, CA
  • Average rainfall days in September: 3.4 days

The month with the highest number of rainy days is March (12.8 days).
The months with the least rainy days are June and July (2.4 days).

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Average sea temperature in September
Burlingame, CA

Average sea temperature in September - Burlingame, CA
  • Average sea temperature in September: 57.3°F

The best month for swimming (with the highest average sea temperature) is September (57.3°F).
The coldest months (with the lowest average sea temperature) are April and June (53°F).

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Average daylight in September /
Average sunshine in September
Burlingame, CA

Average daylight in September / Average sunshine in September - Burlingame, CA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in September
Burlingame, CA

Average sunshine days in September - Burlingame, CA
  • Average sunshine days in September: 23.2 days

The month with the most sunshine days is July (24.6 days).
The month with the least sunshine days is March (16.3 days).

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Average UV index in September
Burlingame, CA

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

The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and December (UV index 3).

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Average cloud cover in September
Burlingame, CA

Average cloud cover in September - Burlingame, CA
  • Average cloud cover in September: 15

The month with the most cloud cover is March (Cloud cover 36).
The months with the least cloud cover are July and September (Cloud cover 15).

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Average visibility in September
Burlingame, CA

Average visibility in September - Burlingame, CA
  • Average visibility in September: 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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Burlingame, California, USA

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