Carlsbad Weather in September

September in Carlsbad typically sees daytime highs of 24°C (75°F) and nighttime lows of 17°C (63°F). Minimal rainfall is typical for this month.

Rainfall in Carlsbad in September

Expect around a single day of rain based on historical data, with 4.1 mm (0.2 in) average. If rain does fall, it tends to be a moderate shower rather than anything heavy.

Temperature in Carlsbad in September

Carlsbad has perfect weather in September, with days reaching 24°C (75°F) and nights cooling to 17°C (63°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. On average, it sees the highest temps of the year.

Sunshine in Carlsbad in September

The days are predominantly sunny, with an estimated total of around 253 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Carlsbad.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Carlsbad's climate page.

Carlsbad Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 3%  

Precipitation 4.1 mm (0.2 in)  

Rainy days a single day  

Humidity 74% *  

Sunshine 253 hours *  

Percentage Sunshine 68% *  

* Data from: San Diego, the United States of America (52 KM, 32 Miles).

What to Wear in Carlsbad in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Dry conditions mean you won't need to worry about rain protection. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Carlsbad in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Carlsbad's climate page.

More climate data for Carlsbad

Temperature Rainfall Sunshine Humidity

See the full Carlsbad climate overview or explore weather in the United States of America.