Patulul weather in September

In September, Patulul sees average daytime highs of 27°C and overnight lows near 20°C, with 520 mm of rain across 29.8 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels muggy.

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

Daytime high
27°
11th warmest
Overnight low
20°
8th coldest
Rainfall
520 mm
29.8 wet days
Daylight
12 h 06 min
5:57 AM – 6:01 PM
Cloud cover
88%
12th clearest
Wind
4 km/h
11th windiest
Solar energy
4.68 kWh/m²
Travel score
3.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Patulul reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°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)
12720
22720
32720
42720
52720
62720
72720
82720
92720
102720
112720
122720
132720
142720
152720
162720
172720
182720
192720
202720
212720
222720
232720
242720
252720
262720
272720
282720
292720
302720

Patulul weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 18°20611.27.3
Feb29° / 18°165.111.56.5
Mar29° / 19°4910.311.95.5
Apr29° / 20°12819.412.34.4
May28° / 20°3952912.73.5
Jun27° / 20°43629.312.83.3
Jul27° / 20°37430.612.83.3
Aug27° / 20°44730.712.53.3
Sep27° / 20°52029.812.13.3
Oct27° / 20°50930.411.73.5
Nov27° / 19°1962311.34.7
Dec27° / 18°4411.511.26.7

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 4% of September, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1694
2694
3595
4595
5595
6595
7595
8595
9496
10496
11496
12496
13496
14496
15496
16496
17496
18496
19496
20496
21496
22496
23496
24496
25496
26496
27595
28694
29694
30793

Chance of precipitation in September

Any precipitation

Patulul gets around 520 mm of rain over 29.8 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 (%)
199
299
399
499
599
699
799
899
999
1099
1199
1299
1399
1499
1599
1699
1799
1899
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy 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 (%)
1946
2946
3937
4937
5937
6928
7928
8919
9919
109010
119010
128911
138911
148911
158911
168911
178911
188911
198911
209010
219010
229010
23919
24919
25919
26919
27919
28919
29919
30919

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 5:56 AM to 5:57 AM, and sunset from 6:13 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:566:13
212.35:566:12
312.35:566:11
412.25:566:11
512.25:566:10
612.25:566:09
712.25:566:08
812.25:566:08
912.25:566:07
1012.25:566:06
1112.15:566:05
1212.15:566:04
1312.15:566:04
1412.15:566:03
1512.15:576:02
1612.15:576:01
1712.15:576:01
1812.15:576:00
1912.05:575:59
2012.05:575:58
2112.05:575:57
2212.05:575:57
2312.05:575:56
2412.05:575:55
2512.05:575:54
2611.95:575:54
2711.95:575:53
2811.95:575:52
2911.95:575:51
3011.95:575:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.68 kWh/m².

For context, solar energy here swings from a low near 4.38 kWh/m² to a high of 6.08 kWh/m² in April across the year — September's 4.68 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.6Bright
214.5Bright
224.5Bright
234.5Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Patulul

In seasonPeak

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

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

Patulul'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 Patulul?

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

3.3
Sightseeing
9th-best month of the year
3.3
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Patulul.

What to pack for Patulul in September

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

In September, Patulul sees daytime highs around 27°C and nights near 20°C. Pack rain gear. Worth having: light clothes and sun protection. About 30 days see rain.

rain gearlight clothessun protection

Sea temperature near Patulul 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 60 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 Patulul 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 Patulul peaks around April 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 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 13UV 13Dec 12UV 9
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar12Extreme
Apr13Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Patulul 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 Patulul 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 Patulul?

Patulul sits at 14.4°N, 91.2°W, 331 m above sea level, in Guatemala. The nearest listed city is Santa Bárbara, 7.0 km away.

TiquisatePatzúnPatzicía

Topography around Patulul

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

Within 3 km, the terrain around Patulul has significant variations in elevation — a maximum elevation change of 499 m around an average of 369 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,436 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,945 m.

The land around Patulul is covered by trees (76%) within 3 km, trees (73%) within 16 km, and trees (52%) within 80 km.

3 km
499 m
16 km
2,436 m
80 km
3,945 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Santa Bárbara 7.0 km · Santa Lucía Cotzumalguapa 18 km · Chicacao 22 km · Yepocapa 24 km · Santiago Atitlán 25 km · Tiquisate 27 km · Patzún 33 km · Patzicía 34 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 Patulul (14.4232°, -91.1605°, elevation 331 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).