Mild
Average highs are around 26°C, so days are mild rather than hot.
Weather Guide
San Luis Obispo, California, United States Average Monthly Weather
Weather score50Mixed annual avg
Best months: July, August, September
Across the year, average daytime temperatures are around 21°C, sunshine averages 8.4h per day, and rainfall totals about 560mm. Sea temperatures average 14°C across the year.
Annual weather
Annual averages
Temp
21°C
Rain
560mm
Annual total
Sun
8.4h
Sea
14°C
Weather score
50
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 3mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.6h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 15°C, so the water can feel cool.
Map
Weather map
Compare San Luis Obispo, California, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August26°C average high
August is one of San Luis Obispo's warmest months, with daytime heat above the yearly average.
Warmest monthsJuly to October
This stretch sets the upper range for average daytime heat.
Rain
August3mm average rain
August is one of San Luis Obispo's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsApril to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August9.6 hours average sun
August is brighter than San Luis Obispo's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August15°C average sea
August sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to November
Sea temperatures are usually near 14°C in this stretch, so swimming comfort is at its strongest.
Weather score
August68 weather score
August is one of San Luis Obispo's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
Hotels in San Luis Obispo, California, United States
Marriott
HOTEL CERRO, Autograph CollectionSan Luis Obispo, California, USA
Courtyard San Luis ObispoSan Luis Obispo, California, USA
SpringHill Suites by Marriott San Luis ObispoSan Luis Obispo, California, USA
Residence Inn By Marriott San Luis ObispoSan Luis Obispo, California, USA
TownePlace Suites by Marriott San Luis ObispoSan Luis Obispo, California, USA