Tecate weather in September

In September, Tecate sees average daytime highs of 28°C and overnight lows near 18°C, with 5 mm of rain across 0.9 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 29°C in the first days to 27°C by the end. The sky is clear or mostly clear about 87% of the time in September, and the air most often feels dry.

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 Tecate's 2nd-clearest and 10th-windiest month. For the whole year in context, see Tecate's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
18°
10th coldest
Rainfall
5 mm
0.9 wet days
Daylight
12 h 12 min
5:35 AM – 5:47 PM
Cloud cover
15%
2nd clearest
Wind
6 km/h
10th windiest
Solar energy
6.27 kWh/m²
Travel score
8.3
out of 10

Tecate is municipal seat of Tecate, State of Baja California, Mexico.

Founded
1861

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 29°C in the first days to 27°C by the end.

A typical September day in Tecate reaches about 28°C in the afternoon and slips back to 18°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 32°C. Set against its neighbours, September runs about 1°C cooler than August and about 3°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12919
22919
32919
42919
52919
62919
72819
82819
92819
102818
112818
122818
132818
142818
152818
162818
172818
182818
192717
202717
212717
222717
232717
242717
252717
262717
272717
282717
292716
302716

Tecate 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 (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 706.110.16.7
Feb18° / 907.210.86.3
Mar19° / 62611.86.8
Apr20° / 10°304.412.87.6
May22° / 13°132.213.68.4
Jun25° / 15°20.514.19.2
Jul28° / 18°30.913.98.5
Aug29° / 19°30.713.27.7
Sep28° / 18°50.912.28.3
Oct25° / 14°182.611.28.7
Nov21° / 10°303.610.37.9
Dec18° / 565.69.96.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 87% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 6% of September, with mostly cloudy or overcast conditions the remaining 7%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1946
2946
3955
4955
5955
6955
7955
8955
9955
10955
11955
12955
13955
14946
15946
16946
17937
18937
19937
20937
21919
22919
23919
24919
259010
269010
279010
288911
298911
308812

Chance of precipitation in September

Any precipitation

Tecate gets around 5 mm of rain over 0.9 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 3% and peaks near 4% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
12
22
32
42
52
62
72
82
92
102
112
123
133
143
153
163
173
183
193
204
214
224
234
244
254
264
274
284
294
304

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12834299
22933299
33033289
43033289
53133279
63233269
73333259
83434248
93534238
103635227
113835216
124035206
134135195
144335174
154535164
164635154
174835143
184935143
195034133
205234122
215333122
225333122
235532112
245532112
255731102
265830102
27593092
28593092
29612982
30632872

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:25 AM to 5:44 AM, and sunset from 6:07 PM to 5:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:256:07
212.75:266:06
312.65:266:05
412.65:276:03
512.65:286:02
612.55:286:01
712.55:295:59
812.55:305:58
912.45:305:57
1012.45:315:55
1112.45:325:54
1212.35:325:52
1312.35:335:51
1412.35:345:50
1512.25:345:48
1612.25:355:47
1712.25:365:45
1812.15:365:44
1912.15:375:43
2012.15:385:41
2112.05:385:40
2212.05:395:38
2312.05:405:37
2411.95:405:36
2511.95:415:34
2611.95:425:33
2711.85:425:31
2811.85:435:30
2911.85:445:29
3011.75:445:27

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.27 kWh/m².

For context, solar energy here swings from a low near 3.2 kWh/m² to a high of 8.18 kWh/m² in June across the year — September's 6.27 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.8Intense
26.7Intense
36.7Intense
46.7Intense
56.6Intense
66.6Intense
76.6Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.4Intense
136.4Intense
146.3Intense
156.3Intense
166.3Intense
176.2Intense
186.2Intense
196.2Intense
206.1Intense
216.1Intense
226.0Intense
236.0Bright
245.9Bright
255.9Bright
265.9Bright
275.8Bright
285.8Bright
295.7Bright
305.7Bright
Planning a trip in September

Is September a good time to visit Tecate?

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

8.3
Sightseeing
5th-best month of the year
9.0
Beach & pool
2nd-best month of the year

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

What to pack for Tecate in September

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

In September, Tecate sees daytime highs around 28°C and nights near 18°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Tecate in September

The nearest coast averages about 21°C 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 47 km away) is warmest in August at about 21°C and coldest in February near 15°C.

It's comfortable for a long swim from Jul 13 to Sep 28 — about 2.6 months when the water holds above 20°C.

14°16°18°20°22°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb15Cool
Mar16Cool
Apr16Cool
May17Cool
Jun19Cool
Jul20Refreshing
Aug21Refreshing
Sep21Refreshing
Oct19Cool
Nov18Cool
Dec16Cool

UV index in Tecate 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 Tecate peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 22UV 11Dec 17UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar6High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Tecate 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 Tecate is worst in October — around 33 µg/m³ PM2.5 (moderate), about 5.4× the cleanest month (May, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateOct 1631 µg/m³May 176 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr9Good
May6Good
Jun9Good
Jul8Good
Aug9Good
Sep16Moderate
Oct33Moderate
Nov13Moderate
Dec17Moderate
Location & terrain

Where is Tecate?

Tecate sits at 32.6°N, 116.6°W, 540 m above sea level, in Mexico. The nearest listed city is Terrazas del Valle, 20 km away.

Topography around Tecate

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

Within 3 km, the terrain around Tecate has significant variations in elevation — a maximum elevation change of 321 m around an average of 575 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,060 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,975 m.

The land around Tecate is covered by artificial surfaces (42%), shrubs (29%) and grassland (21%) within 3 km, shrubs (48%) and grassland (37%) within 16 km, and shrubs (34%) within 80 km.

3 km
321 m
16 km
1,060 m
80 km
1,975 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Terrazas del Valle 20 km · Las Delicias 34 km · Rancho San Diego 35 km · Tijuana 36 km · Villa del Prado 2da Sección 36 km · La Joya 37 km · La Presa 38 km · Casa de Oro-Mount Helix 38 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 Tecate (32.566°, -116.6319°, elevation 540 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. 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).