Our verdict
The best time to visit San Luis Obispo is March-April
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.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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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:
| Season | Months |
|---|---|
| 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:
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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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