Spring
69°F / 46°F
March, April, May: about 4.8 in of rain.
Plan a visit
Best time to visit San Luis Obispo
June, August, September bring mild highs and the least rain.
San Luis Obispo by season
Month-by-month planner
| Month | Weather | High / low | Rain | Local guides |
|---|---|---|---|---|
| January | Wet | 65°F / 41°F | 3.9 in | |
| February | Wet | 65°F / 42°F | 3.5 in | Valentine’s Day |
| March | Wet | 67°F / 45°F | 3.2 in | St. Patrick’s Day |
| April | Great | 69°F / 46°F | 1.1 in | |
| May | Great | 72°F / 48°F | 0.50 in | |
| June | Great | 75°F / 51°F | 0.10 in | Fourth of July |
| July | Great | 78°F / 54°F | 0.10 in | Fourth of July |
| August | Great | 79°F / 55°F | 0.00 in | |
| September | Great | 80°F / 53°F | 0.00 in | Halloween |
| October | Great | 77°F / 50°F | 0.90 in | Halloween |
| November | Great | 71°F / 45°F | 1.4 in | Halloween, Thanksgiving, Christmas |
| December | Wet | 65°F / 40°F | 3.3 in | Christmas, New Year’s Eve |
“Great” means highs between 65°F and 85°F with fewer than 10 wet days. Averages are NOAA’s 1991–2020 normals for the San Luis Obispo Ap station, not a forecast.
Questions
What is the best month to visit San Luis Obispo?
June, August, September: highs between 65°F and 85°F with the least rain.
What is the hottest month in San Luis Obispo?
September, averaging 80°F highs.
What is the coldest month in San Luis Obispo?
December, with average lows of 40°F.
What is the rainiest month in San Luis Obispo?
January, averaging 3.9 in of precipitation.
When are the big holidays in San Luis Obispo?
See the local guides: Halloween (October), Thanksgiving (November), Christmas lights (late November to December), New Year’s Eve.