San Diego, CA weather in October
In October, San Diego sees highs around 75°F and lows around 62°F: mild and dry. There are about 2 days with rain. Great for outdoor plans.
- Normal high
- 75°F
- Normal low
- 62°F
- Wet days
- 2
- 0.5 in total
- Muggy days
- 0
- dew point 65°F+
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 76°F | 73°F |
| Normal low | 64°F | 59°F |
| Chance of a wet day | 6% | 9% |
| Sunrise / sunset | 6:42 am / 6:33 pm | 7:05 am / 5:58 pm |
| Daylight | 11.8 h | 10.9 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical October day
- 6 am63°Fdew point 54°F
- 9 am68°Fdew point 54°F
- Noon72°Fdew point 55°F
- 3 pm72°Fdew point 56°F
- 6 pm68°Fdew point 57°F
- 9 pm66°Fdew point 57°F
NOAA hourly normals (local standard time) from San Diego Lindbergh Fld (2 mi away); average wind 5 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F20 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph5 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow2 of 31
- Notable rainat least 0.10 in1 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per October, counted from daily records for each year 1991-2020.
Rain in October
Normal precipitation is 0.5 in; a dry October brings about 0.0 in and a wet one about 0.5 in (25th and 75th percentiles). Days with half an inch or more are rare.
How October varies from year to year
- Warmest October, 1991-20202015: average high 81°F
- Coolest October2002: average high 68°F
- Wettest October2004: 5.0 in
- Driest October1995: no measurable precipitation
- Highest reading99°F (October 9, 2015)
- Lowest reading44°F (October 31, 2019)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
October compared with September and November
| September | October | November | |
|---|---|---|---|
| Normal high | 77°F | 75°F | 71°F |
| Normal low | 66°F | 62°F | 55°F |
| Wet days | 1 | 2 | 4 |
| Comfortable days | 9 | 20 | 23 |
| Daylight | 12.4 h | 11.4 h | 10.5 h |
Highs change by -2°F from September and -4°F into November.
Nearby alternatives in October
- Warmer: El Cajon, CA13 mi · high 81°F · 3 wet days
- Cooler: Oceanside, CA36 mi · high 70°F · 2 wet days
How San Diego ranks in October
- Normal high153rd warmest of 378 cities; 44th of 60 in California
- Wet days36th driest of 378
- Comfortable days15th most of 340
Heating and cooling
October has 11 heating degree days and 106 cooling degree days (base 65°F), 6% of the year's total heating and cooling demand.
Questions
How hot is San Diego in October?
The normal high is 75°F and the normal low is 62°F. From 1991 to 2020 the hottest October reading was 99°F (most recently on October 9, 2015).
Does it rain a lot in San Diego in October?
About 2 days in October have at least 0.01 in of precipitation, and the normal total is 0.5 in. The wettest October in 1991-2020 was in 2004 (5.0 in); the driest was in 1995, with no measurable precipitation.
Is October a good time to visit San Diego?
October ranks 5th of 12 months on our comfort score for San Diego (75 out of 100). It has about 20 comfortable days and about 1 day at 90°F or hotter. The best months are May and June.
Where the numbers come from
- Temperature, rain, frost dates and humidity and wind by hour: San Diego Lindbergh Fld (USW00023188), 2.0 mi NW of the city center, 15 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Chula Vista (USC00041758), 6.7 mi SE of the city center, 56 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: San Diego International Airport (722900-23188), 2.0 mi NW of the city center, 15 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).