Mazatenango weather in September

In September, Mazatenango sees average daytime highs of 29°C and overnight lows near 22°C, with 542 mm of rain across 29.5 wet days and about 12.1 hours of daylight. It is the 10th-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 1% of the time in September, and the air most often feels oppressive.

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 Mazatenango's 12th-clearest and 11th-windiest month. For the whole year in context, see Mazatenango's year-round climate.

Daytime high
29°
10th warmest
Overnight low
22°
7th coldest
Rainfall
542 mm
29.5 wet days
Daylight
12 h 06 min
5:58 AM – 6:03 PM
Cloud cover
87%
12th clearest
Wind
4 km/h
11th windiest
Solar energy
4.73 kWh/m²
Travel score
2.9
out of 10

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 Mazatenango reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°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°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12922
22922
32922
42922
52922
62922
72922
82922
92922
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212822
222822
232822
242822
252822
262822
272822
282822
292822
302822

How September really feels in Mazatenango

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Mazatenango weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°22611.26.0
Feb31° / 20°175.211.55.4
Mar31° / 21°5310.911.94.5
Apr31° / 22°13317.912.33.6
May30° / 22°43828.512.72.9
Jun29° / 22°4332912.82.9
Jul29° / 22°36630.112.82.9
Aug29° / 22°45230.612.52.9
Sep29° / 22°54229.512.12.9
Oct28° / 22°54129.811.73.1
Nov29° / 21°2072211.34.2
Dec29° / 20°411011.25.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 6% of September, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1892
2892
3793
4793
5793
6793
7793
8793
9793
10793
11793
12793
13694
14595
15595
16595
17595
18595
19595
20595
21595
22595
23595
24595
25595
26595
27694
28694
29793
30793

Chance of precipitation in September

Any precipitation

Mazatenango gets around 542 mm of rain over 29.5 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 99% and peaks near 100% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
198
298
398
498
598
698
798
898
998
1098
1198
1298
1398
1498
1598
1698
1798
1899
1999
2099
2199
2299
2399
2499
2599
26100
27100
28100
29100
3099

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 91% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
1793
2793
3892
4892
5892
6892
7892
8991
9991
10991
11991
12991
131090
141090
151090
161090
171090
181090
191090
201090
211090
221090
231090
241090
25991
26991
27991
28991
29991
30991

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 5:57 AM to 5:59 AM, and sunset from 6:14 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:576:14
212.35:576:14
312.35:576:13
412.25:576:12
512.25:576:11
612.25:576:11
712.25:586:10
812.25:586:09
912.25:586:08
1012.25:586:07
1112.15:586:07
1212.15:586:06
1312.15:586:05
1412.15:586:04
1512.15:586:04
1612.15:586:03
1712.15:586:02
1812.15:586:01
1912.05:586:00
2012.05:586:00
2112.05:585:59
2212.05:585:58
2312.05:585:57
2412.05:585:56
2512.05:585:56
2611.95:585:55
2711.95:595:54
2811.95:595:53
2911.95:595:53
3011.95:595:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.73 kWh/m².

For context, solar energy here swings from a low near 4.41 kWh/m² to a high of 6.16 kWh/m² in April across the year — September's 4.73 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.8Bright
174.7Bright
184.7Bright
194.7Bright
204.6Bright
214.6Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Mazatenango

In seasonPeak

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

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

Mazatenango'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 Mazatenango?

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

2.9
Sightseeing
8th-best month of the year
3.6
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Mazatenango.

What to pack for Mazatenango in September

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

In September, Mazatenango sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 30 days see rain.

light clothesrain gearsun protection

Sea temperature near Mazatenango 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 47 km away) is warmest in July at about 30°C and coldest in February near 29°C.

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

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Mazatenango 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 Mazatenango peaks around March 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 21UV 12Dec 14UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Mazatenango 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 Mazatenango is worst in December — around 45 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (June, 28 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorDec 2145 µg/m³Jun 2228 µg/m³
PM2.5 (µg/m³)Level
Jan44Poor
Feb45Poor
Mar41Poor
Apr44Poor
May40Poor
Jun28Moderate
Jul29Moderate
Aug29Moderate
Sep29Moderate
Oct30Moderate
Nov37Poor
Dec45Poor
Location & terrain

Where is Mazatenango?

Mazatenango sits at 14.5°N, 91.5°W, 373 m above sea level, in Guatemala. The nearest listed city is San Francisco Zapotitlán, 6.0 km away.

Topography around Mazatenango

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

Within 3 km, the terrain around Mazatenango has only modest variations in elevation — a maximum elevation change of 245 m around an average of 379 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,727 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,179 m.

The land around Mazatenango is covered by trees (58%) and artificial surfaces (20%) within 3 km, trees (72%) within 16 km, and trees (54%) within 80 km.

3 km
245 m
16 km
1,727 m
80 km
4,179 m
treesgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: San Francisco Zapotitlán 6.0 km · San Pablo Jocopilas 8.0 km · San Felipe 14 km · El Palmar 15 km · San Sebastián 16 km · Retalhuleu 19 km · Chicacao 19 km · Nuevo San Carlos 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 Mazatenango (14.5341°, -91.5031°, elevation 373 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).