Cabo San Lucas weather in September

In September, Cabo San Lucas sees average daytime highs of 29°C and overnight lows near 25°C, with 124 mm of rain across 10.5 wet days and about 12.1 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 52% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Cabo San Lucas's 11th-clearest and 6th-windiest month. For the whole year in context, see Cabo San Lucas's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
25°
11th coldest
Rainfall
124 mm
10.5 wet days
Daylight
12 h 06 min
6:10 AM – 6:18 PM
Cloud cover
47%
11th clearest
Wind
13 km/h
6th windiest
Solar energy
5.92 kWh/m²
Travel score
5.5
out of 10

Cabo San Lucas is town in Los Cabos Municipality, State of Baja California Sur, Mexico.

Founded
1828

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Cabo San Lucas reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122925
132925
142925
152925
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925

How September really feels in Cabo San Lucas

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Cabo San Lucas weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 18°81.310.88.6
Feb23° / 17°90.911.28.7
Mar24° / 18°10.311.89.0
Apr24° / 18°00.112.59.0
May25° / 20°00.213.19.1
Jun27° / 21°50.613.48.9
Jul29° / 24°193.713.36.8
Aug30° / 26°659.112.85.4
Sep29° / 25°12410.512.15.5
Oct29° / 24°24311.57.1
Nov27° / 22°161.810.98.4
Dec24° / 19°100.910.68.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25446
35545
45644
55644
65743
75743
85842
95941
106040
116040
126238
136337
146436
156436
166535
176535
186634
196733
206832
216931
226931
237030
247228
257327
267426
277624
287624
297723
307921

Chance of precipitation in September

Any precipitation

Cabo San Lucas gets around 124 mm of rain over 10.5 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
143
243
343
443
543
643
743
842
942
1041
1140
1240
1339
1437
1536
1635
1734
1833
1932
2030
2129
2228
2326
2425
2524
2623
2722
2821
2920
3019

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1026731
2026731
3026632
4026632
5026533
6026434
7036334
8036235
9036235
10036235
11046036
12046135
13046135
14056035
15056134
16066034
17066133
18066232
19076132
20076231
21086131
22086131
23096130
240106030
251115929
261125928
271135828
281145926
291155925
301175824

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 30 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over September. Sunrise moves from 6:05 AM to 6:15 AM, and sunset from 6:33 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:056:33
212.46:066:32
312.46:066:31
412.46:066:30
512.46:076:29
612.46:076:28
712.36:076:27
812.36:086:26
912.36:086:25
1012.36:086:24
1112.26:096:23
1212.26:096:22
1312.26:096:21
1412.26:096:20
1512.26:106:19
1612.16:106:18
1712.16:106:17
1812.16:116:16
1912.16:116:15
2012.06:116:14
2112.06:126:13
2212.06:126:12
2312.06:126:11
2411.96:136:09
2511.96:136:08
2611.96:136:07
2711.96:146:06
2811.96:146:05
2911.86:146:04
3011.86:156:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.92 kWh/m².

For context, solar energy here swings from a low near 4.34 kWh/m² to a high of 7.9 kWh/m² in May across the year — September's 5.92 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.0Intense
56.0Intense
66.0Intense
76.0Intense
86.0Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
136.0Bright
146.0Bright
156.0Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for Cabo San Lucas

In seasonPeak

In September, Cabo San Lucas sits inside its pacific hurricane season. The full year is below, with each hazard's peak months called out.

Cabo San Lucas sits in the eastern Pacific hurricane zone; the season peaks August–September.

Pacific hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Cabo San Lucas?

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

5.5
Sightseeing
11th-best month of the year
7.2
Beach & pool
9th-best month of the year

September is a reasonable time to visit Cabo San Lucas for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Cabo San Lucas in September

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

In September, Cabo San Lucas sees daytime highs around 29°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Cabo San Lucas in September

The nearest coast averages about 29°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 29°C and coldest in April near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan23Refreshing
Feb22Refreshing
Mar22Refreshing
Apr21Refreshing
May22Refreshing
Jun23Refreshing
Jul26Warm
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov27Warm
Dec25Warm

UV index in Cabo San Lucas in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cabo San Lucas peaks around May 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighMay 14UV 12Dec 22UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar10Extreme
Apr12Extreme
May12Extreme
Jun11Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct9Very high
Nov7High
Dec6High
Location & terrain

Where is Cabo San Lucas?

Cabo San Lucas sits at 22.9°N, 109.9°W, 11 m above sea level, in Mexico. The nearest listed city is Colonia del Sol, 3.0 km away.

Ciudad ConstituciónNavolatoLicenciado Benito JuárezCosta Rica

Topography around Cabo San Lucas

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

Within 3 km, the terrain around Cabo San Lucas has only modest variations in elevation — a maximum elevation change of 246 m around an average of 35 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 958 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,062 m.

The land around Cabo San Lucas is covered by artificial surfaces (33%), water (28%) and shrubs (23%) within 3 km, water (57%) and shrubs (35%) within 16 km, and water (57%) and shrubs (37%) within 80 km.

3 km
246 m
16 km
958 m
80 km
2,062 m
treesshrubsgrasslandartificial surfacesbare terrainwater
September weather nearby: Colonia del Sol 3.0 km · San José del Cabo 28 km · Todos Santos 70 km · La Paz 145 km · Ciudad Constitución 297 km · Navolato 307 km · Licenciado Benito Juárez 311 km · Costa Rica 319 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 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 Cabo San Lucas (22.8909°, -109.9124°, elevation 11 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).