Carmel-by-the-Sea weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Fair
Best time to visit: April – October
What is the weather like in Carmel-by-the-Sea in September?
In September, Carmel-by-the-Sea is mild: daytime highs average 19 °C, and nights cool down to about 13 °C. The sea averages 14.9 °C – swimming is only for the hardy. With around 9 hours of sunshine a day, there is plenty of sun. It hardly ever rains. All in all, September is a so-so month for a holiday in Carmel-by-the-Sea.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 40 | 40 | 37 |
| Day | 18° | 19° | 18° |
| Night | 13° | 13° | 12° |
| Sea | 15° | 15° | 15° |
| Sun | 10 h | 9 h | 8 h |
| Rain days | 0 | 1 | 2 |
More details for September
- Daylight
- 12 h 28 min06:49 – 19:17
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 13 km/haverage daily peakAll months
- Cloud cover
- 29 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
Carmel-by-the-Sea in September: quick answers
Is Carmel-by-the-Sea hot in September?
No. In September, Carmel-by-the-Sea is mild: daytime highs average 19 °C and nights drop to about 13 °C.
Can you swim in Carmel-by-the-Sea in September?
Only if you don't mind cold water: in September the sea averages just 14.9 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Carmel-by-the-Sea in September?
It hardly ever rains.
Carmel-by-the-Sea month by month
The whole year in Carmel-by-the-SeaAll destinations: USAWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences