Colomba weather in September

In September, Colomba sees average daytime highs of 24°C and overnight lows near 18°C, with 630 mm of rain across 29.9 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Colomba's 12th-clearest and 9th-windiest month. For the whole year in context, see Colomba's year-round climate.

Daytime high
24°
8th warmest
Overnight low
18°
10th coldest
Rainfall
630 mm
29.9 wet days
Daylight
12 h 06 min
5:59 AM – 6:04 PM
Cloud cover
90%
12th clearest
Wind
4 km/h
9th windiest
Solar energy
4.77 kWh/m²
Travel score
3.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical September day in Colomba reaches about 24°C in the afternoon and slips back to 18°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 25°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12417
22417
32417
42417
52418
62418
72418
82418
92418
102418
112418
122418
132418
142418
152418
162418
172418
182418
192418
202418
212418
222418
232418
242418
252418
262418
272418
282418
292418
302418

Colomba weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 15°4916.511.26.4
Feb24° / 16°5115.911.56.1
Mar25° / 16°11123.811.95.0
Apr25° / 17°24326.512.34.3
May25° / 18°60730.412.73.6
Jun24° / 18°54629.812.93.5
Jul24° / 18°49230.912.83.5
Aug24° / 18°55530.912.53.5
Sep24° / 18°63029.912.13.5
Oct24° / 17°52530.811.73.6
Nov24° / 17°22326.611.34.4
Dec24° / 16°7219.411.15.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 1% of September, with mostly cloudy or overcast conditions the remaining 98%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1397
2298
3298
4298
5298
6298
7298
8199
9199
10199
11199
12199
13199
14199
15199
16199
17199
18199
19199
20199
21199
22199
23199
24199
25199
26199
27298
28298
29298
30397

Chance of precipitation in September

Any precipitation

Colomba gets around 630 mm of rain over 29.9 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 100% and peaks near 100% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
1100
2100
3100
4100
5100
699
799
899
999
1099
1199
1299
1399
1499
1599
1699
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 66% of days. Sticky, muggy-or-worse air turns up on roughly 34% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)
17030
27030
37129
47129
57129
67129
77129
87030
96931
106931
116832
126733
136634
146535
156436
166337
176337
186238
196238
206238
216238
226238
236238
246337
256337
266337
276238
286238
296238
306238

Wind in September

Winds average 4 km/h in September.

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 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over September. Sunrise moves from 5:58 AM to 6:00 AM, and sunset from 6:15 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:586:15
212.35:586:15
312.35:586:14
412.25:586:13
512.25:586:12
612.25:586:12
712.25:586:11
812.25:586:10
912.25:586:09
1012.25:596:08
1112.25:596:08
1212.15:596:07
1312.15:596:06
1412.15:596:05
1512.15:596:04
1612.15:596:04
1712.15:596:03
1812.15:596:02
1912.05:596:01
2012.05:596:01
2112.05:596:00
2212.05:595:59
2312.05:595:58
2412.05:595:57
2512.05:595:57
2611.95:595:56
2711.95:595:55
2811.96:005:54
2911.96:005:54
3011.96:005:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.77 kWh/m².

For context, solar energy here swings from a low near 4.53 kWh/m² to a high of 6.27 kWh/m² in April across the year — September's 4.77 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.8Bright
164.8Bright
174.8Bright
184.7Bright
194.7Bright
204.7Bright
214.6Bright
224.6Bright
234.6Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Colomba

In seasonPeak

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

Colomba sits in the Atlantic hurricane belt; the season peaks August–October.

Colomba's rainy season runs May–October, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Colomba?

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

3.5
Sightseeing
9th-best month of the year
3.0
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Colomba.

What to pack for Colomba in September

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

In September, Colomba sees daytime highs around 24°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 30 days see rain.

rain gearlight clothessun protection

Sea temperature near Colomba 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 56 km away) is warmest in August at about 30°C and coldest in February near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Colomba in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Colomba peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highApr 12UV 14Dec 16UV 9
UV index (midday)Level
Jan9Very high
Feb13Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Colomba 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 Colomba is worst in May — around 34 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 934 µg/m³Aug 1622 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb22Moderate
Mar25Moderate
Apr34Moderate
May34Moderate
Jun23Moderate
Jul23Moderate
Aug22Moderate
Sep23Moderate
Oct23Moderate
Nov23Moderate
Dec25Moderate
Location & terrain

Where is Colomba?

Colomba sits at 14.7°N, 91.7°W, 1,011 m above sea level, in Guatemala. The nearest listed city is El Asintal, 12 km away.

Topography around Colomba

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

Within 3 km, the terrain around Colomba has significant variations in elevation — a maximum elevation change of 576 m around an average of 974 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,953 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,178 m.

The land around Colomba is covered by trees (94%) within 3 km, trees (92%) within 16 km, and trees (59%) within 80 km.

3 km
576 m
16 km
2,953 m
80 km
4,178 m
treesgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: El Asintal 12 km · Nuevo San Carlos 13 km · Coatepeque 14 km · San Felipe 17 km · El Palmar 18 km · San Sebastián 18 km · Retalhuleu 20 km · Ostuncalco 22 km

Guatemala travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 43% of US
price level, 2025
GDP per capita
$6,598
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
49%
of population, 2024
Homicide rate
23.4
per 100k, 2023
Road deaths
22.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 510
Religion
Evangelical 46%Roman Catholic 42%none 11%

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 Colomba (14.7073°, -91.7317°, elevation 1,011 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).