Monterey, California weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Fair
Best time to visit: July – September
What is the weather like in Monterey, California in August?
In August, Monterey, California is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. The sea averages 14.5 °C – swimming is only for the hardy. With around 10 hours of sunshine a day, there is plenty of sun. It hardly ever rains. All in all, August is a so-so month for a holiday in Monterey, California.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 52 | 56 | 57 |
| Day | 21° | 22° | 22° |
| Night | 13° | 14° | 14° |
| Sea | 14° | 15° | 15° |
| Sun | 11 h | 10 h | 9 h |
| Rain days | 0 | 0 | 1 |
More details for August
- Daylight
- 13 h 36 min06:24 – 20:00
- UV index
- 9 · very 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
- 33 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 35 %45 %
- 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 August
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
Monterey, California in August: quick answers
Is Monterey, California hot in August?
Warm rather than hot: in August, daytime highs in Monterey, California average 22 °C and nights cool to about 14 °C.
Can you swim in Monterey, California in August?
Only if you don't mind cold water: in August 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 August?
It hardly ever rains.
Monterey, California month by month
The whole year in Monterey, CaliforniaAll destinations: USAWhere to go in AugustSea temperature in August
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