Santa Paula weather in September

In September, Santa Paula sees average daytime highs of 79°F and overnight lows near 62°F, with 0.2 in of rain across 0.5 wet days and about 12.2 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 80°F in the first days to 78°F by the end. The sky is clear or mostly clear about 84% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Santa Paula's 2nd-clearest and 11th-windiest month. For the whole year in context, see Santa Paula's year-round climate.

Daytime high
79°
2nd warmest
Overnight low
62°
10th coldest
Rainfall
0.2 in
0.5 wet days
Daylight
12 h 12 min
5:44 AM – 5:57 PM
Cloud cover
17%
2nd clearest
Wind
3 mph
11th windiest
Solar energy
6.17 kWh/m²
Travel score
9.0
out of 10

Santa Paula is city in Ventura County, California, United States.

Density
2,506/km²
people per km²
Founded
1872

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 80°F in the first days to 78°F by the end.

A typical September day in Santa Paula reaches about 79°F in the afternoon and slips back to 62°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 87°F. Set against its neighbours, September runs about 1°F cooler than August and about 4°F warmer than October.

50°60°70°80°90°151015202530
Avg high (°F)Avg low (°F)
18164
28164
38064
48064
58064
68063
78063
88063
98063
107963
117963
127962
137962
147962
157962
167862
177862
187862
197862
207861
217861
227861
237861
247861
257861
267861
277861
287860
297860
307860

Santa Paula weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan63° / 47°3.65.4106.3
Feb63° / 47°3.86.210.76.1
Mar65° / 49°2.65.411.76.8
Apr67° / 51°0.9312.87.6
May70° / 55°0.51.813.88.2
Jun74° / 59°0.10.414.39.1
Jul79° / 63°0.10.514.19.0
Aug80° / 64°0.00.113.39.0
Sep79° / 62°0.20.512.29.0
Oct75° / 58°0.82.211.18.8
Nov68° / 51°0.82.610.27.9
Dec63° / 47°2.34.79.76.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 84% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 8%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1946
2946
3946
4946
5946
6946
7937
8946
9946
10946
11946
12946
13946
14946
15946
16928
17928
18928
19928
20919
21919
22919
23919
249010
259010
268911
278911
288812
298812
308812

Chance of precipitation in September

Any precipitation

Santa Paula gets around 0.2 in of rain over 0.5 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 2% and peaks near 4% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
142
152
162
172
182
192
202
213
223
233
243
253
263
273
284
294
304

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 51% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11351333
21450324
31550314
41650304
51751284
61851274
71952254
82152234
92253223
102354203
112454193
122555182
132755162
142855152
152955142
163055141
173155131
183255121
193453121
203553111
213652111
223850111
233950101
244149101
254248100
26444690
27464590
28484480
29504280
30534070

Wind in September

Winds average 3 mph in September.

Across September, daily wind ranges from about 3 mph on the calmest days to 3 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over September. Sunrise moves from 5:33 AM to 5:55 AM, and sunset from 6:19 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:336:19
212.75:346:17
312.75:356:16
412.65:366:14
512.65:366:13
612.65:376:11
712.55:386:10
812.55:386:09
912.55:396:07
1012.45:406:06
1112.45:416:04
1212.45:416:03
1312.35:426:01
1412.35:436:00
1512.25:435:58
1612.25:445:57
1712.25:455:55
1812.15:465:54
1912.15:465:52
2012.15:475:51
2112.05:485:50
2212.05:495:48
2312.05:495:47
2411.95:505:45
2511.95:515:44
2611.85:525:42
2711.85:525:41
2811.85:535:39
2911.75:545:38
3011.75:555:36

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.17 kWh/m².

For context, solar energy here swings from a low near 2.96 kWh/m² to a high of 8.06 kWh/m² in June across the year — September's 6.17 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.8Intense
26.7Intense
36.7Intense
46.6Intense
56.6Intense
66.6Intense
76.5Intense
86.5Intense
96.5Intense
106.4Intense
116.4Intense
126.3Intense
136.3Intense
146.3Intense
156.2Intense
166.2Intense
176.1Intense
186.1Intense
196.0Intense
206.0Intense
216.0Bright
225.9Bright
235.9Bright
245.8Bright
255.8Bright
265.7Bright
275.7Bright
285.6Bright
295.6Bright
305.5Bright
Planning a trip in September

Is September a good time to visit Santa Paula?

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

9.0
Sightseeing
2nd-best month of the year
8.5
Beach & pool
3rd-best month of the year

September is one of the better times to visit Santa Paula for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Santa Paula in September

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

In September, Santa Paula sees daytime highs around 79°F and nights near 62°F. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Santa Paula in September

The nearest coast averages about 67°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 mi away) is warmest in August at about 67°F and coldest in March near 58°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

55°60°65°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°F)Comfort
Jan58Bracing
Feb58Bracing
Mar58Bracing
Apr58Bracing
May60Cool
Jun63Cool
Jul66Cool
Aug67Cool
Sep67Cool
Oct65Cool
Nov62Cool
Dec60Cool

UV index in Santa Paula in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santa Paula peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 11Dec 15UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5Moderate
Apr7Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Santa Paula in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Santa Paula is worst in December — around 78 µg/m³ PM2.5 (unhealthy), about 12.6× the cleanest month (January, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyDec 1670 µg/m³Jan 246 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar8Good
Apr7Good
May7Good
Jun7Good
Jul11Good
Aug12Good
Sep11Good
Oct8Good
Nov14Moderate
Dec78Unhealthy
Location & terrain

Where is Santa Paula?

Santa Paula sits at 34.4°N, 119.1°W, 279 ft above sea level, in United States. The nearest listed city is Fillmore, 8.7 mi away.

Topography around Santa Paula

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Santa Paula.

Within 2 miles, the terrain around Santa Paula has significant variations in elevation — a maximum elevation change of 1,286 ft around an average of 443 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 6,250 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,796 ft.

The land around Santa Paula is covered by grassland (32%), artificial surfaces (25%) and trees (20%) within 2 miles, grassland (37%) and trees (35%) within 10 miles, and water (32%), grassland (27%) and trees (21%) within 50 miles.

2 miles
1,286 ft
10 miles
6,250 ft
50 miles
8,796 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Fillmore 8.7 mi · Camarillo 9.3 mi · Moorpark 11 mi · Oxnard 13 mi · Ventura 14 mi · Port Hueneme 16 mi · Simi Valley 17 mi · Thousand Oaks 18 mi

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
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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 Santa Paula (34.3542°, -119.0593°, elevation 279 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).