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Best time to visit San Luis Obispo, CA, USA

Our verdict

The best time to visit San Luis Obispo is March-April

San Luis Obispo is a place lots of people visit almost all year round, but if you’re looking for the best time to go, March-April is definitely the time you should visit. This is based on a number of factors such as the weather, cost of flights and accommodation, peak travel periods and more.

The warmest month of the year in San Luis Obispo is July, where the average temperature gets to around 27℃ (80℉), but temperatures can reach as high as 31℃ (87℉) on the hottest days in summer. In the winter, temperatures can get down to 5℃ (42℉) around December.

If you want to get the most out of your time visiting San Luis Obispo, or you’re just afraid of the dark, the days in July are usually the longest between sunrise and sunset. To stay dry, avoid travelling to San Luis Obispo in March – It’s the wettest month of the year.

Keep reading to find all the info you need (and none of the stuff you don’t) about the best times to go to San Luis Obispo. By the time you get to the bottom, you’ll be ready to start booking your trip.

Warmest month

July

Least rainfall

August

Most daylight

July

San Luis Obispo seasons

Before you continue, it’s important to know when the seasons are in San Luis Obispo as they might be different to yours depending on where in the world you’re travelling from. San Luis Obispo is in the Northern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in San Luis Obispo

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in San Luis Obispo for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

San Luis Obispo climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in San Luis Obispo for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

San Luis Obispo in January

  • Average temperature: 12℃ (54℉)
  • Average high temperature: 17℃ (62℉)
  • Average low temperature: 8℃ (47℉)
  • Average humidity: 63%
  • Average sunny days: 23 days
  • Average rainfall: 47mm (2") over 7 days
23 days
of pure sunshine
7 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in January, make sure you pack a warm jacket or coat.


San Luis Obispo in February

  • Average temperature: 12℃ (53℉)
  • Average high temperature: 17℃ (62℉)
  • Average low temperature: 8℃ (46℉)
  • Average humidity: 67%
  • Average sunny days: 19 days
  • Average rainfall: 45mm (2") over 8 days
19 days
of pure sunshine
8 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in February, make sure you pack a warm jacket or coat.


San Luis Obispo in March

  • Average temperature: 13℃ (55℉)
  • Average high temperature: 18℃ (64℉)
  • Average low temperature: 8℃ (47℉)
  • Average humidity: 69%
  • Average sunny days: 20 days
  • Average rainfall: 51mm (2") over 11 days
20 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in March, make sure you pack a warm jacket or coat.


San Luis Obispo in April

  • Average temperature: 14℃ (58℉)
  • Average high temperature: 20℃ (68℉)
  • Average low temperature: 9℃ (48℉)
  • Average humidity: 65%
  • Average sunny days: 22 days
  • Average rainfall: 16mm (1") over 7 days
22 days
of pure sunshine
7 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in April, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.


San Luis Obispo in May

  • Average temperature: 16℃ (62℉)
  • Average high temperature: 22℃ (71℉)
  • Average low temperature: 11℃ (51℉)
  • Average humidity: 64%
  • Average sunny days: 26 days
  • Average rainfall: 7mm (0") over 4 days
26 days
of pure sunshine
4 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in May, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.


San Luis Obispo in June

  • Average temperature: 19℃ (66℉)
  • Average high temperature: 25℃ (77℉)
  • Average low temperature: 13℃ (56℉)
  • Average humidity: 61%
  • Average sunny days: 28 days
  • Average rainfall: 1mm (0") over 1 days
28 days
of pure sunshine
1 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in June, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


San Luis Obispo in July

  • Average temperature: 21℃ (69℉)
  • Average high temperature: 27℃ (80℉)
  • Average low temperature: 15℃ (59℉)
  • Average humidity: 61%
  • Average sunny days: 27 days
  • Average rainfall: 4mm (0") over 2 days
27 days
of pure sunshine
2 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


San Luis Obispo in August

  • Average temperature: 21℃ (69℉)
  • Average high temperature: 27℃ (80℉)
  • Average low temperature: 15℃ (59℉)
  • Average humidity: 61%
  • Average sunny days: 29 days
  • Average rainfall: 1mm (0") over 0 days
29 days
of pure sunshine
0 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


San Luis Obispo in September

  • Average temperature: 20℃ (69℉)
  • Average high temperature: 27℃ (80℉)
  • Average low temperature: 16℃ (60℉)
  • Average humidity: 57%
  • Average sunny days: 28 days
  • Average rainfall: 3mm (0") over 2 days
28 days
of pure sunshine
2 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in September, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.

San Luis Obispo in October

  • Average temperature: 18℃ (65℉)
  • Average high temperature: 24℃ (74℉)
  • Average low temperature: 14℃ (56℉)
  • Average humidity: 57%
  • Average sunny days: 27 days
  • Average rainfall: 12mm (0") over 3 days
27 days
of pure sunshine
3 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in October, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


San Luis Obispo in November

  • Average temperature: 15℃ (58℉)
  • Average high temperature: 20℃ (67℉)
  • Average low temperature: 11℃ (51℉)
  • Average humidity: 59%
  • Average sunny days: 24 days
  • Average rainfall: 20mm (1") over 4 days
24 days
of pure sunshine
4 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in November, make sure you pack a warm jacket or coat.


San Luis Obispo in December

  • Average temperature: 11℃ (53℉)
  • Average high temperature: 16℃ (60℉)
  • Average low temperature: 8℃ (46℉)
  • Average humidity: 64%
  • Average sunny days: 22 days
  • Average rainfall: 37mm (1") over 8 days
22 days
of pure sunshine
8 days
of showers or rain

What to pack: If you’re heading to San Luis Obispo in December, make sure you pack a warm jacket or coat.


Top FAQs

The hottest month of the year in San Luis Obispo is usually July, where temperatures tend to rise to around 27℃ (80℉) in the middle of the day or early afternoon.
The month with the least amount of rain in San Luis Obispo is generally around August. The dry season often coincides with cooler weather, so you should check the temperatures in August first to make sure it’s still a good time to go.
The rainiest time of year in San Luis Obispo is generally around March, although the wetter season can sometimes extend a few months either side of March too.
If you want to get the most out of your time visiting San Luis Obispo, or if you're just afraid of the dark, the days in July are usually the longest between sunrise and sunset.

San Luis Obispo map