San Francisco weather in October

In October, San Francisco sees average daytime highs of 25°C and overnight lows near 14°C, with 116 mm of rain across 9.6 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 46% of the time in October, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of October to 13 h 12 min by month's end. Set against the rest of the year, October is San Francisco's 10th-clearest and 1st-windiest month. For the whole year in context, see San Francisco's year-round climate.

Daytime high
25°
6th warmest
Overnight low
14°
6th coldest
Rainfall
116 mm
9.6 wet days
Daylight
12 h 48 min
6:30 AM – 7:17 PM
Cloud cover
48%
10th clearest
Wind
14 km/h
1st windiest
Solar energy
5.7 kWh/m²
Travel score
7.2
out of 10

San Francisco is city in Argentina.

Founded
1886

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 26°C by the end.

A typical October day in San Francisco reaches about 25°C in the afternoon and slips back to 14°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 31°C. Set against its neighbours, October runs about 3°C warmer than September and about 3°C cooler than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12412
22412
32412
42412
52412
62413
72413
82413
92413
102413
112513
122513
132513
142514
152514
162514
172514
182514
192614
202614
212614
222614
232614
242614
252614
262615
272615
282615
292615
302615
312615

San Francisco weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 19°1199.113.85.3
Feb29° / 19°1159.113.15.8
Mar27° / 17°1389.212.26.8
Apr24° / 14°1008.211.37.4
May20° / 11°475.510.47.1
Jun18° / 304.3106.6
Jul17° / 203.510.26.7
Aug20° / 393.810.97.6
Sep22° / 11°515.411.87.8
Oct25° / 14°1169.612.87.2
Nov28° / 16°1198.913.66.6
Dec30° / 18°1289.6145.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
45842
55842
65842
75842
85941
95842
105842
116040
126040
136040
146040
156040
166040
176040
186139
196139
206139
216139
226139
236139
246139
256139
266139
276139
286139
296139
306139
316238

Chance of precipitation in October

Any precipitation

San Francisco gets around 116 mm of rain over 9.6 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
228
329
429
530
630
730
830
930
1030
1129
1229
1329
1429
1528
1628
1728
1828
1929
2029
2129
2229
2330
2430
2531
2631
2731
2831
2931
3031
3131

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 59% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
17317730
27217830
37018840
46918940
568181040
667181050
766181150
865181151
963181261
1063181261
1162191261
1261191361
1361191361
1460201361
1560201361
1658211461
1757221461
1857221461
1956231461
2055231561
2155231561
2254241561
2353241571
2452241671
2553241670
2653241670
2751251770
2851251770
2950261771
3049261871
3148261871

Wind in October

Winds average 14 km/h in October, the windiest month of the year.

Across October, daily wind ranges from about 14 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 18 min at the start of October to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over October. Sunrise moves from 6:48 AM to 6:15 AM, and sunset from 7:06 PM to 7:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:487:06
212.36:477:07
312.46:467:08
412.46:447:08
512.46:437:09
612.56:427:10
712.56:417:10
812.56:397:11
912.66:387:12
1012.66:377:13
1112.66:367:13
1212.76:347:14
1312.76:337:15
1412.76:327:15
1512.86:317:16
1612.86:307:17
1712.86:297:18
1812.86:287:18
1912.96:277:19
2012.96:267:20
2112.96:247:21
2213.06:237:21
2313.06:227:22
2413.06:217:23
2513.16:207:24
2613.16:207:25
2713.16:197:25
2813.16:187:26
2913.26:177:27
3013.26:167:28
3113.26:157:29

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.7 kWh/m².

For context, solar energy here swings from a low near 2.55 kWh/m² to a high of 7.19 kWh/m² in December across the year — October's 5.7 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.9Bright
215.9Bright
226.0Bright
236.0Intense
246.0Intense
256.1Intense
266.1Intense
276.2Intense
286.2Intense
296.2Intense
306.3Intense
316.3Intense
Planning a trip in October

Is October a good time to visit San Francisco?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.2
Sightseeing
4th-best month of the year
6.5
Beach & pool
6th-best month of the year

October is one of the better times to visit San Francisco for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Francisco in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, San Francisco sees daytime highs around 25°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in San Francisco in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Francisco peaks around January 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateHighVery highExtremeJan 17UV 14Jun 21UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr7High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug5Moderate
Sep7High
Oct10Very high
Nov11Extreme
Dec13Extreme
Location & terrain

Where is San Francisco?

San Francisco sits at 31.4°S, 62.1°W, 120 m above sea level, in Argentina. The nearest listed city is San Jorge, 57 km away.

Topography around San Francisco

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Francisco.

Within 3 km, the terrain around San Francisco has only modest variations in elevation — a maximum elevation change of 13 m around an average of 114 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 24 m; within 80 km, only modest variations in elevation — a maximum elevation change of 103 m.

The land around San Francisco is covered by artificial surfaces (50%) and cropland (30%) within 3 km, cropland (94%) within 16 km, and cropland (88%) within 80 km.

3 km
13 m
16 km
24 m
80 km
103 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: San Jorge 57 km · Rafaela 60 km · Sunchales 73 km · Las Varillas 78 km · Morteros 80 km · Arroyito 92 km · Gálvez 106 km · Esperanza 109 km

Argentina travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / I
220 V · 50 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$14,898
2025
Happiness
6.4 / 10
World Happiness, 2025
Homicide rate
4.5
per 100k, 2023
Road deaths
14.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 575
Religion
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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 San Francisco (-31.425°, -62.084°, elevation 120 m), 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).