Carlsbad
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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 excellent 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.

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).

Carlsbad Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Carlsbad - and find the best time to visit.

Best Places in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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

Carlsbad 3-Day Forecast

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.