Colima weather in September

In September, Colima sees average daytime highs of 29°C and overnight lows near 21°C, with 247 mm of rain across 26.1 wet days and about 12.1 hours of daylight. It is the 12th-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 4% of the time in September, and the air most often feels oppressive.

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 Colima's 12th-clearest and 12th-windiest month. For the whole year in context, see Colima's year-round climate.

Daytime high
29°
12th warmest
Overnight low
21°
9th coldest
Rainfall
247 mm
26.1 wet days
Daylight
12 h 06 min
6:46 AM – 6:52 PM
Cloud cover
81%
12th clearest
Wind
4 km/h
12th windiest
Solar energy
4.65 kWh/m²
Travel score
3.2
out of 10

Colima is capital of the State of Colima, Mexico.

Density
3,266/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 Colima reaches about 29°C in the afternoon and slips back to 21°C overnight — a 8°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.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12921
22921
32921
42921
52921
62921
72921
82921
92921
102921
112921
122921
132921
142921
152921
162921
172921
182921
192921
202921
212921
222921
232921
242921
252921
262921
272921
282921
292921
302921

How September really feels in Colima

Once humidity and wind are folded in, September averages 11 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
11
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.

Colima weather by month

How September compares with the rest of the year at a glance. September is the 12th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 15°221.4116.6
Feb31° / 16°121.611.36.1
Mar31° / 16°12111.95.6
Apr33° / 17°20.912.44.7
May33° / 20°174.812.94.1
Jun31° / 21°20220.913.13.3
Jul30° / 21°17823.6133.3
Aug30° / 21°22225.612.73.2
Sep29° / 21°24726.112.13.2
Oct30° / 20°1351811.64.3
Nov30° / 18°244.511.15.9
Dec30° / 16°11210.96.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11585
21585
31486
41486
51585
61585
71585
81585
91684
101684
111684
121882
131882
141882
151882
161882
171882
181783
191783
201783
211882
221882
231882
242080
252080
262179
272179
282377
292377
302575

Chance of precipitation in September

Any precipitation

Colima gets around 247 mm of rain over 26.1 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 86% and peaks near 88% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
188
288
388
488
588
688
787
887
987
1087
1186
1286
1386
1487
1587
1687
1787
1887
1987
2087
2187
2287
2386
2486
2585
2684
2783
2882
2981
3080

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 66% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
138620
238620
338620
438620
538620
638620
738620
837630
937630
1037630
1136640
1236640
1335650
1435650
1534660
1633670
1733670
1832680
1932680
2031690
2131690
2230700
2330700
2430700
2530700
2630700
2731690
2831681
2932671
3032671

Wind in September

Winds average 4 km/h in September, the calmest month.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 6:43 AM to 6:49 AM, and sunset from 7:06 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:437:06
212.46:437:05
312.36:437:04
412.36:447:03
512.36:447:03
612.36:447:02
712.36:447:01
812.36:447:00
912.26:456:59
1012.26:456:58
1112.26:456:57
1212.26:456:56
1312.26:456:55
1412.16:466:54
1512.16:466:53
1612.16:466:52
1712.16:466:51
1812.16:466:51
1912.16:476:50
2012.06:476:49
2112.06:476:48
2212.06:476:47
2312.06:476:46
2412.06:486:45
2511.96:486:44
2611.96:486:43
2711.96:486:42
2811.96:486:41
2911.96:496:40
3011.86:496:40

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.65 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.65 kWh/m² to a high of 7.45 kWh/m² in April across the year — September's 4.65 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Colima

In seasonPeak

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

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

Colima'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 Colima?

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

3.2
Sightseeing
11th-best month of the year
4.2
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Colima.

What to pack for Colima in September

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

In September, Colima sees daytime highs around 29°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Colima 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 45 km away) is warmest in August at about 30°C and coldest in April near 26°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb27Warm
Mar26Warm
Apr26Warm
May27Warm
Jun29Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov29Tropical
Dec28Tropical

UV index in Colima 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 Colima peaks around May 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighMay 14UV 13Dec 14UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar12Extreme
Apr12Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep11Extreme
Oct8Very high
Nov7Very high
Dec7High

Air quality in Colima 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 Colima is worst in May — around 50 µg/m³ PM2.5 (poor), about 3.9× the cleanest month (August, 13 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1249 µg/m³Aug 2013 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar18Moderate
Apr43Poor
May50Poor
Jun19Moderate
Jul14Moderate
Aug13Moderate
Sep13Moderate
Oct16Moderate
Nov14Moderate
Dec15Moderate
Location & terrain

Where is Colima?

Colima sits at 19.2°N, 103.7°W, 518 m above sea level, in Mexico. The nearest listed city is Ciudad de Villa de Álvarez, 4.0 km away.

Topography around Colima

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

Within 3 km, the terrain around Colima has only modest variations in elevation — a maximum elevation change of 163 m around an average of 513 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,096 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,211 m.

The land around Colima is covered by artificial surfaces (70%) within 3 km, trees (46%) within 16 km, and trees (63%) within 80 km.

3 km
163 m
16 km
1,096 m
80 km
4,211 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ciudad de Villa de Álvarez 4.0 km · Tecomán 40 km · Ciudad de Armería 43 km · Tuxpan 49 km · Zapotiltic 53 km · Ciudad Guzmán 57 km · Manzanillo 68 km · Tamazula de Gordiano 68 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 Colima (19.2447°, -103.7127°, elevation 518 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).