Big Sur in Fall
In fall (September, October and November), Big Sur sees average daytime highs around 64°F and overnight lows near 52°F, with 3.3 in of rain over about 9 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 68°F in early September to 57°F by late November. The sky is clear or mostly clear about 70% of the time across fall, and the air most often feels dry.
Fall is Big Sur's 2nd-best season to visit on our travel score. For the whole year in context, see Big Sur's year-round climate.
- Avg daytime high
- 64°F
- 2nd-warmest season
- Avg overnight low
- 52°F
- Rainfall
- 3.3 in
- 9 wet days
- Avg wind
- 8 mph
- Travel score
- 7.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Big Sur in Fall
Over the season highs ease from about 68°F in early September to 57°F by late November.
A typical fall day in Big Sur reaches about 64°F and drops to 52°F overnight. The warmest of the three months is September, the coolest November.
Big Sur weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 55° / 46° | 5.1 | 9.3 | 9.8 | 3.7 |
| Feb | 55° / 46° | 4.8 | 9.3 | 10.6 | 3.6 |
| Mar | 56° / 46° | 3.4 | 8.3 | 11.7 | 4.1 |
| Apr | 57° / 47° | 1.7 | 5.7 | 12.9 | 4.7 |
| May | 59° / 49° | 0.7 | 2.6 | 13.9 | 5.8 |
| Jun | 63° / 51° | 0.1 | 0.4 | 14.4 | 7.4 |
| Jul | 66° / 54° | 0.0 | 0.1 | 14.2 | 8.3 |
| Aug | 67° / 55° | 0.1 | 0.3 | 13.4 | 8.5 |
| Sep | 67° / 55° | 0.1 | 0.6 | 12.2 | 8.4 |
| Oct | 65° / 53° | 0.9 | 2.4 | 11.1 | 7.6 |
| Nov | 59° / 49° | 2.2 | 6.1 | 10.1 | 5.3 |
| Dec | 55° / 46° | 4.5 | 9.2 | 9.6 | 3.8 |
Cloud cover in Fall
The sky is clear or mostly clear about 70% of the time across fall.
Chance of precipitation in Fall
Big Sur gets around 3.3 in of rain over 9 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 8 mph across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 48 min in early September to 9 h 42 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.7 kWh/m².
Hazard calendar for Big Sur
None of Big Sur's seasonal hazards peak in fall. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Big Sur's rainy season runs December–March, when most of the year's rain falls.
Is fall a good time to visit Big Sur?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is one of the better times to visit Big Sur for general sightseeing.
What to pack for Big Sur in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Big Sur sees daytime highs around 64°F and nights near 52°F. Pack sun protection. Worth having: a warm layer. About 9 days see rain.
Sea temperature near Big Sur in Fall
The nearest coast averages about 58°F across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 8 mi away) is warmest in September at about 59°F and coldest in April near 54°F.
The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 55 | 55 | 55 | 54 | 54 | 55 | 57 | 58 | 59 | 58 | 57 | 56 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 55 | Bracing |
| Feb | 55 | Bracing |
| Mar | 55 | Bracing |
| Apr | 54 | Bracing |
| May | 54 | Bracing |
| Jun | 55 | Bracing |
| Jul | 57 | Bracing |
| Aug | 58 | Bracing |
| Sep | 59 | Bracing |
| Oct | 58 | Bracing |
| Nov | 57 | Bracing |
| Dec | 56 | Bracing |
UV index in Big Sur in Fall
Clear-sky midday UV across fall averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Big Sur peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 4 | 5 | 7 | 8 | 11 | 10 | 10 | 7 | 5 | 3 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme | Very high | High | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 10 | Very high |
| Sep | 7 | High |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Big Sur in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Big Sur is worst in September — around 27 µg/m³ PM2.5 (moderate), about 7.0× the cleanest month (December, 4 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 4 | 5 | 5 | 5 | 5 | 5 | 16 | 25 | 27 | 6 | 4 | 4 |
| Level | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 4 | Good |
| Feb | 5 | Good |
| Mar | 5 | Good |
| Apr | 5 | Good |
| May | 5 | Good |
| Jun | 5 | Good |
| Jul | 16 | Moderate |
| Aug | 25 | Moderate |
| Sep | 27 | Moderate |
| Oct | 6 | Good |
| Nov | 4 | Good |
| Dec | 4 | Good |
Where is Big Sur?
Big Sur sits at 36.3°N, 121.8°W, 0 ft above sea level, in United States. The nearest listed city is Monterey, 24 mi away.
Topography around Big Sur
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Big Sur.
Within 2 miles, the terrain around Big Sur has large variations in elevation — a maximum elevation change of 3,455 ft around an average of 1,145 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 4,918 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,758 ft.
The land around Big Sur is covered by trees (77%) within 2 miles, water (45%) and trees (43%) within 10 miles, and water (40%), grassland (27%) and trees (22%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Big Sur (36.2702°, -121.8075°, elevation 0 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.