Manzanillo weather in September

In September, Manzanillo sees average daytime highs of 29°C and overnight lows near 26°C, with 283 mm of rain across 23.5 wet days and about 12.1 hours of daylight. It is the 3rd-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 8% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Manzanillo's 12th-clearest and 5th-windiest month. For the whole year in context, see Manzanillo's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
26°
10th coldest
Rainfall
283 mm
23.5 wet days
Daylight
12 h 06 min
6:48 AM – 6:55 PM
Cloud cover
79%
12th clearest
Wind
8 km/h
5th windiest
Solar energy
4.61 kWh/m²
Travel score
3.7
out of 10

Manzanillo is municipal seat of Manzanillo, State of Colima, Mexico.

Density
101/km²
people per km²
Founded
1527

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 Manzanillo reaches about 29°C in the afternoon and slips back to 26°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282926
292926
302926

How September really feels in Manzanillo

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.

Manzanillo 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
Jan27° / 23°221.1118.3
Feb26° / 23°130.911.48.6
Mar26° / 22°90.411.98.8
Apr26° / 23°0012.48.7
May27° / 24°71.412.98.2
Jun28° / 26°14215.513.15.2
Jul29° / 26°16921134.0
Aug29° / 26°22323.112.63.7
Sep29° / 26°28323.512.13.7
Oct29° / 26°1461511.65.2
Nov28° / 25°263.511.17.3
Dec27° / 24°101.410.98.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 77%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11882
21882
31882
41981
51981
61981
72080
82080
92080
102278
112278
122278
132278
142278
152278
162377
172377
182476
192476
202476
212476
222476
232476
242575
252773
262872
272971
282971
293169
303268

Chance of precipitation in September

Any precipitation

Manzanillo gets around 283 mm of rain over 23.5 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 78% and peaks near 81% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
181
281
381
481
581
681
781
881
981
1080
1180
1280
1380
1479
1579
1679
1778
1878
1978
2077
2177
2276
2376
2475
2574
2673
2773
2872
2971
3070

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
105347
205446
305446
405545
505545
605545
705545
805446
905446
1015247
1115148
1215148
1315049
1415049
1514950
1614950
1714851
1814851
1914752
2014752
2114653
2214653
2304654
2404654
2504654
2604654
2704654
2804654
2904654
3004654

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 24 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 36 minutes over September. Sunrise moves from 6:46 AM to 6:51 AM, and sunset from 7:09 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:467:09
212.46:467:08
312.36:467:07
412.36:467:06
512.36:467:05
612.36:477:04
712.36:477:03
812.36:477:02
912.26:477:01
1012.26:477:00
1112.26:487:00
1212.26:486:59
1312.26:486:58
1412.16:486:57
1512.16:486:56
1612.16:486:55
1712.16:496:54
1812.16:496:53
1912.16:496:52
2012.06:496:51
2112.06:496:50
2212.06:506:49
2312.06:506:48
2412.06:506:47
2511.96:506:47
2611.96:506:46
2711.96:516:45
2811.96:516:44
2911.96:516:43
3011.86:516:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.61 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.61 kWh/m² to a high of 7.34 kWh/m² in April across the year — September's 4.61 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Manzanillo

In seasonPeak

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

Manzanillo sits in the eastern Pacific hurricane zone; the season peaks August–September.

Manzanillo's monsoon runs June–October, when most of the year's rain falls.

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

Is September a good time to visit Manzanillo?

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

3.7
Sightseeing
11th-best month of the year
4.6
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Manzanillo.

What to pack for Manzanillo in September

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

In September, Manzanillo sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Manzanillo 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 30°C and coldest in April near 25°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb26Warm
Mar25Warm
Apr25Warm
May27Warm
Jun28Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov29Tropical
Dec28Tropical

UV index in Manzanillo 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 Manzanillo peaks around May 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highVery highHighMay 14UV 12Dec 14UV 6
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug9Very high
Sep11Extreme
Oct8Very high
Nov7High
Dec6High

Air quality in Manzanillo 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 Manzanillo is worst in May — around 26 µg/m³ PM2.5 (moderate), about 5.0× the cleanest month (February, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1725 µg/m³Feb 165 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb5Good
Mar6Good
Apr14Moderate
May26Moderate
Jun14Moderate
Jul10Good
Aug8Good
Sep7Good
Oct7Good
Nov6Good
Dec6Good
Location & terrain

Where is Manzanillo?

Manzanillo sits at 19.1°N, 104.3°W, 12 m above sea level, in Mexico. The nearest listed city is Cihuatlán, 27 km away.

Topography around Manzanillo

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

Within 3 km, the terrain around Manzanillo has only modest variations in elevation — a maximum elevation change of 207 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 918 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,867 m.

The land around Manzanillo is covered by artificial surfaces (34%), water (27%) and trees (24%) within 3 km, trees (52%) and water (33%) within 16 km, and trees (50%) and water (32%) within 80 km.

3 km
207 m
16 km
918 m
80 km
2,867 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Cihuatlán 27 km · Ciudad de Armería 44 km · Tecomán 54 km · Ciudad de Villa de Álvarez 66 km · Colima 68 km · Autlán de Navarro 73 km · El Grullo 78 km · Zapotiltic 112 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 Manzanillo (19.1169°, -104.3421°, elevation 12 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. 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).