Carlsbad Weather in September

September in Carlsbad averages 31°C (88°F) during the day and 16°C (61°F) at night. It is the wettest month of the year, with 96 mm (3.8 in) of rainfall on average, so waterproof gear is a must.

Rainfall in Carlsbad in September

The month brings the most rain, so be prepared with an umbrella for the occasional shower. Historically, the month has about 9 days of rain, averaging 96 mm (3.8 in) in total. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Carlsbad in September

September in Carlsbad brings very high temperatures, with highs of 31°C (88°F) and nights around 16°C (61°F). It's usually most comfortable outside during the morning and later in the day. With lows of 16°C (61°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

If your ideal day consists of dry skies and pleasant temperatures, February, March, April, October and November typically offer the best circumstances for Carlsbad.