When to go · United States

When to go to San Luis Obispo

Twelve months of averages for San Luis Obispo, and what they say about when to go.

When to go

What the averages say

Mean daily highs and lows and the month's rain, averaged over 2001 to 2020.

On these averages, San Luis Obispo has a mean high between 18°C and 32°C and under 150 mm of rain in March to November.

Of those months, it is also dry (under 50 mm of rain) and not humid in April to November.

The warmest month is July (29°C) and the coolest December (15°C). The wettest is January (71 mm) and the driest August (2 mm); about 357 mm of rain falls in a year.

How these sentences are worded

Each sentence is written from the figures by fixed rules, and says no more than they do. Mild to warm: a mean daily high from 18°C up to 32°C. Hot: 32°C or more. Cool: 10°C up to 18°C. Cold: under 10°C. Dry: under 50 mm of rain in the month; wet: 150 mm or more. Humid: a high of 25°C or more with relative humidity of 70% or more. A month is described as good for going when it is mild to warm and not wet.

San Luis Obispo: highs, lows and rainHighLowRain

The year at a glance

Mild to warm and dry
Mild to warm, humid or showery
Hot
Cool
Wet
Cold

JanCool
FebCool
MarMild–warm, mixed
AprMild–warm, dry
MayMild–warm, dry
JunMild–warm, dry
JulMild–warm, dry
AugMild–warm, dry
SeptMild–warm, dry
OctMild–warm, dry
NovMild–warm, dry
DecCool

Month by month

Every month in San Luis Obispo

The whole year, with humidity, cloud and the sunlight reaching the ground.

Climate in San Luis Obispo by month: mean daily high and low, rain, and what the month is like
Month	High	Low	Rain	Humidity	Cloud	Sunlight (kWh/m²/day)	High in Dubai	What it is like
January	15°C	5°C	71 mm	75%	47%	2.9	23°C	Cool
February	16°C	5°C	62 mm	76%	45%	3.8	24°C	Cool
March	18°C	6°C	55 mm	75%	42%	5.2	27°C	Mild to warm, humid or showery
April	20°C	7°C	26 mm	69%	35%	6.6	31°C	Mild to warm and dry
May	24°C	10°C	13 mm	61%	27%	7.7	35°C	Mild to warm and dry
June	28°C	12°C	5 mm	53%	18%	8.3	37°C	Mild to warm and dry
July	29°C	14°C	3 mm	52%	19%	8	39°C	Mild to warm and dry
August	29°C	14°C	2 mm	52%	18%	7.3	39°C	Mild to warm and dry
September	28°C	14°C	3 mm	51%	18%	6.2	37°C	Mild to warm and dry
October	24°C	11°C	20 mm	56%	26%	4.6	34°C	Mild to warm and dry
November	19°C	8°C	29 mm	65%	36%	3.3	29°C	Mild to warm and dry
December	15°C	5°C	68 mm	73%	48%	2.6	25°C	Cool

The Dubai column is Dubai's mean daily high, for comparison.

Modelled averages for an area about 50 km across, not a weather station's record: NASA POWER climatology, 2001–2020. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program.

When to go nearby

Plan it

Plan a trip to San Luis Obispo

Tell us when and who is travelling, and a person puts the flights, the stays and the rest into one quote.

Plan a trip to San Luis Obispo More about San Luis Obispo When to go

Month

High

Low

Rain

Humidity

Cloud

Sunlight (kWh/m²/day)

High in Dubai

What it is like

January

15°C

5°C

71 mm

75%

47%

2.9

23°C

Cool

February

16°C

5°C

62 mm

76%

45%

3.8

24°C

Cool

March

18°C

6°C

55 mm

75%

42%

5.2

27°C

Mild to warm, humid or showery

April

20°C

7°C

26 mm

69%

35%

6.6

31°C

Mild to warm and dry

May

24°C

10°C

13 mm

61%

27%

7.7

35°C

Mild to warm and dry

June

28°C

12°C

5 mm

53%

18%

8.3

37°C

Mild to warm and dry

July

29°C

14°C

3 mm

52%

19%

39°C

Mild to warm and dry

August

29°C

14°C

2 mm

52%

18%

7.3

39°C

Mild to warm and dry

September

28°C

14°C

3 mm

51%

18%

6.2

37°C

Mild to warm and dry

October

24°C

11°C

20 mm

56%

26%

4.6

34°C

Mild to warm and dry

November

19°C

8°C

29 mm

65%

36%

3.3

29°C

Mild to warm and dry

December

15°C

5°C

68 mm

73%

48%

2.6

25°C

Cool