San Luis Obispo (CA) monthly weather averages

Contents

Average daytime temperature
Average rainfall
Average daily sunshine
Day / night temperatures
Sea temperature
Wind speed
Relative humidity
Quick weather stats
Location map

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at San Luis Obispo

San Luis Obispo average temperature chart (Celsius)

San Luis Obispo average temperature chart (Fahrenheit)

Average monthly temperatures in San Luis Obispo (degrees centigrade and fahrenheit)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
°C	15.7	16.8	16.8	18.7	20.5	23.2	25.5	25.8	25.1	23.2	19	16
°F	60.2	62.2	62.3	65.6	68.9	73.8	77.8	78.5	77.2	73.8	66.2	60.8

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

San Luis Obispo monthly rainfall chart (mm)

San Luis Obispo monthly rainfall chart (inches)

Average monthly rainfall in San Luis Obispo (mm and inches)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
mm	100	95	81	38	9	2	3	3	10	21	57	77
inches	3.9	3.7	3.2	1.5	0.4	0.1	0.1	0.1	0.4	0.8	2.2	3
Rainy days	7	7	8	5	2	1	1	1	2	3	6	6

Average annual rainfall in San Luis Obispo: 409.267mm (161.1 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in San Luis Obispo

Average daily sunshine San Luis Obispo
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Hrs sunshine	6.4	7.9	9.3	11	11.3	11.4	11.3	10.5	10	8.9	6.5	5.6

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

San Luis Obispo average minimum / maximum temperatures (Celsius)

San Luis Obispo average minimum / maximum temperatures (Fahrenheit)

Maximum and minimum daily temperatures in San Luis Obispo (degrees centigrade and fahrenheit)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Min °C	3.5	4.6	4.9	5.8	7.8	10.3	11.8	12.1	11.2	8.9	5.7	3.3
Max °C	16	17.1	17.1	19	20.8	23.6	25.8	26.2	25.5	23.6	19.3	16.3
Min °F	38.2	40.2	40.8	42.4	46	50.5	53.2	53.7	52.1	47.9	42.3	37.9
Max °F	49.5	51.4	51.8	54.3	57.7	62.4	65.8	66.4	64.9	61.2	54.5	49.6

Sea temperature

The graph below shows the average sea temperature.

San Luis Obispo average sea temperature chart (Fahrenheit)

Average sea temperature around San Luis Obispo in degrees centigrade and fahrenheit
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
°C	13.6	13.4	13.3	13.2	13.6	14.5	16	16.8	17	16.6	15.5	14.2
°F	56.4	56.1	56	55.8	56.5	58.2	60.8	62.2	62.6	61.8	59.9	57.5

Wind speed

The graph below shows the average wind speed.

San Luis Obispo average winspeed by month (km/h)

San Luis Obispo average winspeed by month (mph)

Average wind speed in San Luis Obispo (mph and kmh)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
km/h	10	11	14	14	16	14	13	12	11	10	11	10
mph	6	7	9	9	10	9	8	7	7	7	7	6

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Average relative humidity in San Luis Obispo
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
70%	74%	74%	71%	72%	72%	73%	73%	74%	71%	72%	74%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

San Luis Obispo weather stats

San Luis Obispo weather statistics
Hottest month:	August	25.8°C 78.4°F
Driest month:	June	2mm 0.1ins
Sunniest month:	April	11hrs
Coldest month:	January	15.7°C 60.3°F
Wettest month:	January	100mm 3.9ins
Warmest sea:	September	17°C 62.6°F

Map showing location of San Luis Obispo (35.28275, -120.65962)