San Felipe weather in September

In September, San Felipe sees average daytime highs of 33°C and overnight lows near 28°C, with 13 mm of rain across 1.2 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 34°C in the first days to 32°C by the end. The sky is clear or mostly clear about 90% of the time in September, and the air most often feels oppressive.

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

Daytime high
33°
3rd warmest
Overnight low
28°
10th coldest
Rainfall
13 mm
1.2 wet days
Daylight
12 h 12 min
5:28 AM – 5:39 PM
Cloud cover
13%
2nd clearest
Wind
10 km/h
11th windiest
Solar energy
6.35 kWh/m²
Travel score
4.5
out of 10

San Felipe is municipal seat of San Felipe, State of Baja California, Mexico.

Founded
1916

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 34°C in the first days to 32°C by the end.

A typical September day in San Felipe reaches about 33°C in the afternoon and slips back to 28°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 36°C. Set against its neighbours, September runs about 2°C cooler than August and about 4°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13529
23529
33429
43429
53429
63429
73429
83429
93429
103428
113428
123428
133428
143428
153328
163328
173328
183327
193327
203327
213327
223327
233327
243327
253226
263226
273226
283226
293226
303226

How September really feels in San Felipe

Once humidity and wind are folded in, September averages 29 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
29
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.

San Felipe weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 14°81.610.27.9
Feb20° / 14°9210.97.9
Mar22° / 16°71.511.88.7
Apr25° / 19°30.712.79.2
May28° / 22°10.313.68.2
Jun32° / 26°00145.8
Jul34° / 29°10.313.83.9
Aug35° / 30°40.613.13.5
Sep33° / 28°131.212.24.5
Oct29° / 23°130.611.27.5
Nov23° / 18°6110.48.9
Dec19° / 14°101.8107.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 90% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 4% of September, with mostly cloudy or overcast conditions the remaining 6%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1937
2937
3937
4937
5937
6937
7946
8946
9946
10946
11955
12955
13955
14955
15955
16955
17955
18955
19946
20946
21946
22946
23937
24937
25937
26937
27937
28937
29937
30937

Chance of precipitation in September

Any precipitation

San Felipe gets around 13 mm of rain over 1.2 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 4% and peaks near 5% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
15
25
35
45
55
65
75
84
94
104
114
124
134
144
154
164
174
183
193
203
214
224
234
244
254
264
273
283
293
303

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10210215512
20211225312
31211225212
41212235111
51313244911
61314244710
71315254510
8241626439
9241726419
10251827408
11351928388
12351929367
13462030346
14562031326
15572032305
16672034294
17782034274
18882035263
19992035243
201092036232
211192036222
2212101936212
2313101936202
2414111936191
2515111935181
2616121935181
2717121934171
2819131933161
2920131931151
3022142030141

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 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 60 minutes over September. Sunrise moves from 5:19 AM to 5:37 AM, and sunset from 5:59 PM to 5:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:195:59
212.65:205:58
312.65:205:56
412.65:215:55
512.55:225:54
612.55:225:53
712.55:235:51
812.45:235:50
912.45:245:49
1012.45:255:47
1112.35:255:46
1212.35:265:45
1312.35:265:43
1412.35:275:42
1512.25:285:41
1612.25:285:39
1712.25:295:38
1812.15:295:37
1912.15:305:35
2012.15:315:34
2112.05:315:33
2212.05:325:31
2312.05:325:30
2411.95:335:29
2511.95:345:27
2611.95:345:26
2711.85:355:25
2811.85:355:23
2911.85:365:22
3011.75:375:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.35 kWh/m².

For context, solar energy here swings from a low near 3.56 kWh/m² to a high of 8.41 kWh/m² in June across the year — September's 6.35 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.7Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.4Intense
156.4Intense
166.4Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.2Intense
226.2Intense
236.2Intense
246.1Intense
256.1Intense
266.0Intense
276.0Intense
286.0Bright
295.9Bright
305.9Bright
Planning a trip in September

Is September a good time to visit San Felipe?

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

4.5
Sightseeing
10th-best month of the year
8.1
Beach & pool
5th-best month of the year

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

What to pack for San Felipe in September

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

In September, San Felipe sees daytime highs around 33°C and nights near 28°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near San Felipe in September

The nearest coast averages about 30°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 August at about 31°C and coldest in January near 16°C.

It's comfortable for a long swim from Apr 5 to Dec 4 — about 8 months when the water holds above 20°C.

15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb16Cool
Mar18Cool
Apr21Refreshing
May24Refreshing
Jun26Warm
Jul29Tropical
Aug31Tropical
Sep30Tropical
Oct27Warm
Nov23Refreshing
Dec18Cool

UV index in San Felipe in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (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 Felipe peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 10Dec 18UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5High
Apr8Very high
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov5Moderate
Dec3Moderate
Location & terrain

Where is San Felipe?

San Felipe sits at 31.0°N, 114.8°W, 21 m above sea level, in Mexico. The nearest listed city is Lázaro Cárdenas, 118 km away.

Rodolfo Sánchez Taboada

Topography around San Felipe

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

Within 3 km, the terrain around San Felipe has significant variations in elevation — a maximum elevation change of 307 m around an average of 29 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,256 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,027 m.

The land around San Felipe is covered by bare terrain (58%) and water (26%) within 3 km, bare terrain (56%) and water (42%) within 16 km, and bare terrain (40%), water (35%) and shrubs (23%) within 80 km.

3 km
307 m
16 km
1,256 m
80 km
3,027 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetland
September weather nearby: Lázaro Cárdenas 118 km · Puerto Peñasco 128 km · Ciudad Guadalupe Victoria 143 km · San Luis Río Colorado 159 km · San Luis 163 km · Somerton 175 km · Puebla 178 km · Rodolfo Sánchez Taboada 182 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 San Felipe (31.0253°, -114.8417°, elevation 21 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. 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).