Los Mochis weather in September

In September, Los Mochis sees average daytime highs of 35°C and overnight lows near 26°C, with 102 mm of rain across 10.9 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 51% of the time in September, and the air most often feels miserable.

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 Los Mochis's 10th-clearest and 11th-windiest month. For the whole year in context, see Los Mochis's year-round climate.

Daytime high
35°
3rd warmest
Overnight low
26°
10th coldest
Rainfall
102 mm
10.9 wet days
Daylight
12 h 06 min
6:06 AM – 6:15 PM
Cloud cover
45%
10th clearest
Wind
8 km/h
11th windiest
Solar energy
5.57 kWh/m²
Travel score
2.5
out of 10

Los Mochis is municipal seat of Ahome, State of Sinaloa, Mexico.

Founded
1893

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 35°C through the month.

A typical September day in Los Mochis reaches about 35°C in the afternoon and slips back to 26°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 38°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13527
23527
33527
43527
53527
63526
73526
83526
93526
103526
113526
123526
133526
143526
153526
163526
173526
183526
193526
203526
213526
223526
233526
243526
253526
263526
273526
283625
293625
303625

How September really feels in Los Mochis

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
30 feel dangerously hot (≥ 39°C)
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.

Los Mochis weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 13°131.510.68.4
Feb27° / 14°131.711.18.1
Mar29° / 15°20.411.87.2
Apr31° / 16°10.312.65.8
May33° / 20°00.113.24.4
Jun35° / 24°40.713.63.3
Jul36° / 27°527.513.42.2
Aug36° / 27°9312.612.92.0
Sep35° / 26°10210.912.22.5
Oct35° / 23°262.911.43.4
Nov31° / 18°171.810.75.8
Dec27° / 14°121.510.48.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24852
34951
45149
55347
65446
75545
85644
95842
105941
116139
126238
136436
146535
156733
166832
177030
187129
197228
207426
217426
227624
237723
247723
257921
267921
278119
288218
298317
308416

Chance of precipitation in September

Any precipitation

Los Mochis gets around 102 mm of rain over 10.9 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 36% and peaks near 52% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
152
251
351
450
549
648
747
846
945
1044
1143
1242
1340
1439
1537
1636
1734
1833
1932
2030
2129
2228
2326
2425
2523
2622
2721
2819
2918
3017

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 83% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100694
200694
300694
400694
500793
600793
700793
800892
900991
1000991
11001090
12001090
13001189
14011287
15011287
16011386
17011485
18021484
19121582
20131680
21131779
22141778
23151876
24151975
25162073
26172171
27182269
28292366
292102464
302112562

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 6:00 AM to 6:12 AM, and sunset from 6:32 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:006:32
212.56:006:31
312.56:016:29
412.56:016:28
512.46:016:27
612.46:026:26
712.46:026:25
812.46:036:24
912.36:036:23
1012.36:036:22
1112.36:046:21
1212.36:046:19
1312.26:056:18
1412.26:056:17
1512.26:056:16
1612.16:066:15
1712.16:066:14
1812.16:076:12
1912.16:076:11
2012.06:076:10
2112.06:086:09
2212.06:086:08
2312.06:096:07
2411.96:096:06
2511.96:106:04
2611.96:106:03
2711.96:106:02
2811.86:116:01
2911.86:116:00
3011.86:125:59

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.57 kWh/m².

For context, solar energy here swings from a low near 4.08 kWh/m² to a high of 7.96 kWh/m² in May across the year — September's 5.57 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in September

Hazard calendar for Los Mochis

In seasonPeak

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

Los Mochis 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 Los Mochis?

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

2.5
Sightseeing
10th-best month of the year
5.5
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Los Mochis.

What to pack for Los Mochis in September

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

In September, Los Mochis sees daytime highs around 35°C and nights near 26°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Los Mochis 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 at the nearest coast (about 22 km away) is warmest in August at about 30°C and coldest in February near 20°C.

It's comfortable for a long swim from Mar 9 to Jan 19 — about 10.4 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan20Refreshing
Feb20Cool
Mar20Refreshing
Apr22Refreshing
May25Warm
Jun27Warm
Jul29Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov26Warm
Dec22Refreshing

UV index in Los Mochis in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Los Mochis peaks around July 15 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 15UV 12Dec 20UV 5
UV index (midday)Level
Jan5High
Feb7High
Mar9Very high
Apr11Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep10Extreme
Oct8Very high
Nov6High
Dec5Moderate
Location & terrain

Where is Los Mochis?

Los Mochis sits at 25.8°N, 109.0°W, 18 m above sea level, in Mexico. The nearest listed city is Juan José Ríos, 18 km away.

Licenciado Benito Juárez

Topography around Los Mochis

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

Within 3 km, the terrain around Los Mochis has only modest variations in elevation — a maximum elevation change of 108 m around an average of 15 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 146 m; within 80 km, large variations in elevation — a maximum elevation change of 928 m.

The land around Los Mochis is covered by artificial surfaces (81%) within 3 km, cropland (66%) within 16 km, and water (40%) and cropland (29%) within 80 km.

3 km
108 m
16 km
146 m
80 km
928 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Juan José Ríos 18 km · Gabriel Leyva Solano 39 km · Guasave 59 km · Guamúchil 99 km · Huatabampo 132 km · Navojoa 149 km · Navolato 173 km · Licenciado Benito Juárez 193 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 Los Mochis (25.791°, -108.9982°, elevation 18 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).