Monterey, California weather in October
Temperature, sea and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Fair
Best time to visit: July – September
What is the weather like in Monterey, California in October?
In October, Monterey, California is mild: daytime highs average 20 °C, and nights cool down to about 12 °C. The sea averages 14.5 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain is rare: about 2 days bring 19 mm in total. All in all, October is a so-so month for a holiday in Monterey, California.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 57 | 45 | 29 |
| Day | 22° | 20° | 17° |
| Night | 14° | 12° | 9° |
| Sea | 15° | 15° | 14° |
| Sun | 9 h | 8 h | 6 h |
| Rain days | 1 | 2 | 6 |
More details for October
- Daylight
- 11 h 19 min07:14 – 18:33
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 32 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 35 %23 %
- Seaweight 25 %0 %
- Sunshineweight 20 %83 %
- 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 October
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
Monterey, California in October: quick answers
Is Monterey, California hot in October?
No. In October, Monterey, California is mild: daytime highs average 20 °C and nights drop to about 12 °C.
Can you swim in Monterey, California in October?
Only if you don't mind cold water: in October the sea averages just 14.5 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Monterey, California in October?
Rain is rare: about 2 days bring 19 mm in total.
Monterey, California month by month
The whole year in Monterey, CaliforniaAll destinations: USAWhere to go in OctoberSea temperature in October
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