Hottest (avg)
#4 / 12
Sits around the middle of the year.
October in context
How it compares to the rest of the year in San Diego.
Wettest (avg)
#7 / 12
Typical rainfall for the year.
Daylight Hours
#8 / 12
Around the yearly average.
Windiest (avg)
#10 / 12
Usually calmer than most months.
Highest UV
#8 / 12
Near the middle of the yearly UV range.
Most Humid
#8 / 12
Humidity stays close to the yearly norm.
Monthly climate breakdown
A detailed look at the typical climate conditions for October.
Thermal profile
Temperature
Typical daytime high
- Nighttime low
-
- Feels like (avg)
-
Light window
Sunshine
11.4 h
Average daylight
- UV index (max)
- 7
- Typical sun hours
- 05:53 - 17:14
Wet-day pattern
Rain & Snow
Typical rainfall
- Rainy days
- 4 days
- Cloud cover (avg)
- 35%
Air feel
Humidity & Wind
74%
Average humidity
- Wind (avg)
-
- Wind (max gusts)
-
Historical daily baseline
Daily climate explorer
Pick a day to inspect the usual conditions through October in San Diego. Based on a 30-year historical climate baseline, not a forecast.
Primary control
Select a day
Scroll to compare daily conditions. The summary updates with your selection.
Secondary context
Monthly trend
Median daytime highs across the month, with a softer low line.
Median temperatureMedian lowTypical range
Day 15 selected for October. Temperature 22.7°C.
Historical disruption baseline
Typical disruptions in October
Based on 30 years of historical data, these are the disruption patterns most likely to affect plans in October.
Rain High impact
Rain disruption Measures: Likely rain disruption days. Observed about 2% of days (0.6 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.6 days / month
- Share of days
- ~2% of days
- Upper edge
- Up to ~34mm (P95)
Why this matters
Rain disruption risk appears on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Washout risk Measures: Washout day risk. Observed about 2% of days (0.6 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.6 days / month
- Share of days
- ~2% of days
- Upper edge
- Up to ~34mm (P95)
Why this matters
Washout conditions are possible on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Heat Moderate
Hot days Measures: Hot days (>=30C). Observed about 4% of days (1.2 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
1.2 days / month
- Share of days
- ~4% of days
- Upper edge
- Up to ~34°C (P95)
Why this matters
Hot days are possible on ~1 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Show all disruptions (14 more)
Rain High impact
Heavy rain days Measures: Heavy rain days (>=10mm). Observed about 1% of days (0.3 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.3 days / month
- Share of days
- ~1% of days
- Upper edge
- Up to ~38mm (P95)
Why this matters
Heavy rain is possible on ~0 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind High impact
Stormy conditions Measures: Storm-impact proxy days. Observed about 1% of days (0.2 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.2 days / month
- Share of days
- ~1% of days
- Upper edge
- Up to ~63km/h (P95)
Why this matters
Stormy conditions are possible on ~0 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Rain High impact
Washout run Measures: Multi-day washout runs. Observed about 0.1 days/month in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.1 days / month
- Share of days
- —
- Upper edge
- Up to ~9.4mm (P95)
Why this matters
Multi-day washout runs are possible on ~0 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Heat Moderate
Hot feels-like days Measures: Hot feels-like days (>=32C). Observed about 1% of days (0.4 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.4 days / month
- Share of days
- ~1% of days
- Upper edge
- Up to ~35°C (P95)
Why this matters
Feels-like heat >=32C is possible on ~0 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Humidity Minor
High humidity Measures: High humidity days (RH >=80%). Observed about 43% of days (13.2 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
13.2 days / month
- Share of days
- ~43% of days
- Upper edge
- Up to ~89% (P95)
Why this matters
High humidity is possible on ~13 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Cloud Minor
Cloudy days Measures: Cloudy days (cloud cover >=60%). Observed about 21% of days (6.6 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
6.6 days / month
- Share of days
- ~21% of days
- Upper edge
- Up to ~94% (P95)
Why this matters
Cloudy skies are possible on ~7 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Wet days Measures: Wet days (>=0.1mm). Observed about 16% of days (4.9 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
4.9 days / month
- Share of days
- ~16% of days
- Upper edge
- Up to ~12mm (P95)
Why this matters
Measurable rain is possible on ~5 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Rainy hours Measures: Rain-hours signal (>=3h rain). Observed about 10% of days (3.1 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
3.1 days / month
- Share of days
- ~10% of days
- Upper edge
- Up to ~22h (P95)
Why this matters
Several rainy hours are possible on ~3 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Cloud Minor
Mostly cloudy days Measures: Mostly cloudy days (cloud cover >=80%). Observed about 8% of days (2.4 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
2.4 days / month
- Share of days
- ~8% of days
- Upper edge
- Up to ~98% (P95)
Why this matters
Mostly cloudy skies are possible on ~2 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Wet most of day Measures: Wet-most-of-day signal (>=6h rain). Observed about 6% of days (2.0 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
2.0 days / month
- Share of days
- ~6% of days
- Upper edge
- Up to ~24h (P95)
Why this matters
Wet-most-of-day conditions are possible on ~2 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind Minor
Gusty days Measures: Gusty days (>=40 km/h). Observed about 6% of days (1.8 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
1.8 days / month
- Share of days
- ~6% of days
- Upper edge
- Up to ~61km/h (P95)
Why this matters
Gusty conditions are possible on ~2 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Humidity Minor
Humid days Measures: Humid days (dew point >=18C). Observed about 3% of days (0.8 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.8 days / month
- Share of days
- ~3% of days
- Upper edge
- Up to ~20°C (P95)
Why this matters
Humid conditions are possible on ~1 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Cloud Minor
Overcast days Measures: Overcast days (cloud cover >=95%). Observed about 1% of days (0.3 days/month) in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.3 days / month
- Share of days
- ~1% of days
- Upper edge
- Up to ~99% (P95)
Why this matters
Overcast skies are possible on ~0 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Heat Minor
Heatwave run Measures: Heatwave runs (>=3 hot days). Observed about 0.1 days/month in October. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.1 days / month
- Share of days
- —
- Upper edge
- Up to ~34°C (P95)
Why this matters
Heatwave runs are possible on ~0 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Travel planning FAQ
Frequently asked questions
Quick answers to the weather questions you ask the most.
Is October a good time to visit San Diego?
Typical October days in San Diego reach highs of 23°C (73°F) with nights around 15°C (59°F). It usually feels warm by day and mild after dark. Overall, October sits in the middle of the San Diego climate range.
What are temperatures like in October?
Daytime temperatures in October typically peak near 23°C (73°F), while nights drop to around 15°C (59°F). Expect warm afternoons and mild evenings.
How much does it rain in October?
Rainfall in October averages 16 mm (0.63 in) across roughly 4 days. Overall it is a mostly dry time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in October?
You can expect about 11 hours of daylight in October. Sunrise is typically around 05:53 and sunset near 17:14. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in October?
UV levels are often high (around 7). Regular sunscreen and a hat are recommended.
Is it windy in October?
In October, average wind speeds are around 8 km/h (5 mph), with gusts on the windiest days reaching about 36 km/h (22 mph). On the ground, it is a gentle to moderate breeze is common, but stronger winds are not frequent.