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September Weather in Burlingame, United States

Last updated: June 24, 2025

In September, the average temperature in Burlingame, United States is a pleasant 22°C (72°F). Expect a range from a cool 6°C (43°F) to a warm 34°C (94°F). With an average humidity of 71%, you may feel the warmth more intensely. Be prepared for some rain, as 83 mm (3.3 in) of precipitation can be expected over 7 days.

September Temperature in Burlingame

In September in Burlingame, the average temperature is 22°C (72°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 6°C (43°F). This variety in temperature makes Burlingame an ideal destination for travelers seeking both warmth and cooler experiences.

September Weather in Burlingame: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Burlingame, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Burlingame, September typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec323347546677807772574538
Data source: Temperature data for Burlingame generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Burlingame

In Burlingame in September, the total precipitation amount is 83 mm (3.3 in) over the course of 7 days.

September Precipitation Trends in Burlingame

The chart displays monthly precipitation patterns in Burlingame, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Burlingame, September typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec45301009220010394127831213833
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Burlingame

In Burlingame in September humidity is 71%. With an average temperature of 22°C (72°F), this humidity feels like the air is thick and slightly stifling, making outdoor activities require frequent breaks to stay hydrated and cool.

September Average Humidity in Burlingame

This chart illustrates the average monthly humidity levels in Burlingame, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Burlingame is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%78%70%73%82%82%81%78%71%71%81%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Burlingame

In Burlingame in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Burlingame.

Maximum UV Index Levels in Burlingame for September

The chart shows the monthly maximum UV Index (UVI) for Burlingame in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Burlingame typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109643
Data source: Burlingame September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Burlingame Compares to Other Months

Weather in Burlingame varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Burlingame, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Burlingame, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)45 mm (1.8 inches)76%moderate
February Weather1°C (33°F)30 mm (1.2 inches)77%high
March Weather8°C (47°F)100 mm (3.9 inches)70%high
April Weather12°C (55°F)92 mm (3.6 inches)73%very high
May Weather19°C (66°F)200 mm (7.9 inches)82%very high
June Weather25°C (78°F)103 mm (4.0 inches)82%extreme
July Weather27°C (80°F)94 mm (3.7 inches)81%extreme
August Weather25°C (77°F)127 mm (5.0 inches)78%very high
September Weather22°C (72°F)83 mm (3.3 inches)71%very high
October Weather14°C (57°F)121 mm (4.8 inches)71%high
November Weather7°C (45°F)38 mm (1.5 inches)81%moderate
December Weather3°C (38°F)33 mm (1.3 inches)84%moderate

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