Carlsbad Weather in September

What's the weather like in Carlsbad (New Mexico) in September 2025?

The climate in Carlsbad during September can be summarized as warm and reasonably dry.

September is in the fall / autumn in Carlsbad and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 30°C (86°F), whilst at night 15°C (58°F) is normal.

Carlsbad weather averages (imperial / metric)
Daytime temperature 30°C 85.9°F
Nightly temperature 14.7°C 58.4°F
Average temperature 22.3°C 72.1°F
Daily sunshine 9.4 hrs
Avg rainfall 66 mm 2.6 ins
Rainy days 6 days
Sea temperature 24.7°C 76.4°F
Humidity 57%
Windspeed 14kph 9 mph

On average September is the wettest month of the year in Carlsbad with around 66mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.4 hours of sunshine per day.

September temperatures in Carlsbad

Carlsbad average temperature in September

September rainfall

Carlsbad average rain in September

September hourly sunshine

Carlsbad average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Carlsbad in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Carlsbad weather stats

Carlsbad weather statistics
Hottest month: July 34.5°C 94.1°F
Driest month: March 9mm 0.4ins
Sunniest month: June 12.1hrs
Coldest month: January 13.7°C 56.7°F
Wettest month: September 66mm 2.6ins
Map showing location of Carlsbad (32.42067, -104.22884) Carlsbad map pin © Google

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