Santiago Sacatepéquez weather in September

In September, Santiago Sacatepéquez sees average daytime highs of 24°C and overnight lows near 15°C, with 204 mm of rain across 24.1 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 2nd-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 3% of the time in September, and the air most often feels comfortable.

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

Daytime high
24°
6th warmest
Overnight low
15°
10th coldest
Rainfall
204 mm
24.1 wet days
Daylight
12 h 06 min
5:55 AM – 5:59 PM
Cloud cover
83%
11th clearest
Wind
5 km/h
12th windiest
Solar energy
4.92 kWh/m²
Travel score
4.4
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 Santiago Sacatepéquez reaches about 24°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 26°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12414
22415
32415
42415
52415
62415
72415
82415
92415
102415
112415
122415
132415
142415
152415
162415
172415
182415
192415
202415
212415
222415
232415
242415
252415
262415
272415
282315
292315
302315

Santiago Sacatepéquez weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 11°61.811.28.5
Feb24° / 12°51.311.58.7
Mar26° / 13°153.811.98.0
Apr26° / 14°517.912.37.0
May25° / 15°13317.712.75.4
Jun24° / 15°22123.912.84.5
Jul24° / 14°11617.312.85.5
Aug24° / 14°13619.112.55.3
Sep24° / 15°20424.112.14.4
Oct23° / 14°1521911.75.2
Nov22° / 13°417.111.37.1
Dec23° / 12°132.811.18.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11783
21783
31783
41684
51684
61684
71684
81585
91585
101585
111585
121585
131585
141585
151585
161585
171486
181486
191486
201387
211387
221387
231387
241288
251288
261288
271288
281288
291288
301288

Chance of precipitation in September

Any precipitation

Santiago Sacatepéquez gets around 204 mm of rain over 24.1 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 79% and peaks near 83% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
176
277
377
478
578
678
778
878
978
1077
1177
1277
1377
1478
1578
1678
1779
1879
1980
2080
2181
2281
2382
2482
2583
2683
2783
2882
2982
3081

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 72% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
197615
297615
397615
487616
587616
687517
787517
877518
977518
1077419
1177320
1277221
1367222
1467123
1567024
1657025
1757025
1856926
1946927
2046828
2136928
2236928
2326929
2426929
2526929
2626929
2726929
2826929
2926929
3026929

Wind in September

Winds average 5 km/h in September, the calmest month.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 5:54 AM to 5:55 AM, and sunset from 6:11 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:546:11
212.35:546:10
312.35:546:10
412.25:546:09
512.25:546:08
612.25:546:07
712.25:546:07
812.25:546:06
912.25:546:05
1012.25:546:04
1112.25:546:03
1212.15:546:03
1312.15:546:02
1412.15:556:01
1512.15:556:00
1612.15:555:59
1712.15:555:59
1812.15:555:58
1912.05:555:57
2012.05:555:56
2112.05:555:55
2212.05:555:55
2312.05:555:54
2412.05:555:53
2512.05:555:52
2611.95:555:52
2711.95:555:51
2811.95:555:50
2911.95:555:49
3011.95:555:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.92 kWh/m².

For context, solar energy here swings from a low near 4.54 kWh/m² to a high of 6.19 kWh/m² in April across the year — September's 4.92 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
165.0Bright
174.9Bright
184.9Bright
194.8Bright
204.8Bright
214.8Bright
224.7Bright
234.7Bright
244.7Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Santiago Sacatepéquez

In seasonPeak

In September, Santiago Sacatepéquez sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Santiago Sacatepéquez's monsoon runs May–October, when most of the year's rain falls.

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

Is September a good time to visit Santiago Sacatepéquez?

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

4.4
Sightseeing
12th-best month of the year
3.8
Beach & pool
12th-best month of the year

September is a reasonable time to visit Santiago Sacatepéquez for sightseeing.

What to pack for Santiago Sacatepéquez in September

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

In September, Santiago Sacatepéquez sees daytime highs around 24°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 24 days see rain.

rain gearlight clothessun protection

UV index in Santiago Sacatepéquez in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santiago Sacatepéquez peaks around April 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 15Dec 13UV 9
UV index (midday)Level
Jan10Extreme
Feb14Extreme
Mar14Extreme
Apr15Extreme
May13Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Santiago Sacatepéquez 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 Santiago Sacatepéquez is worst in April — around 48 µg/m³ PM2.5 (poor), about 2.2× the cleanest month (August, 22 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1846 µg/m³Aug 1422 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb26Moderate
Mar31Moderate
Apr48Poor
May37Poor
Jun25Moderate
Jul23Moderate
Aug22Moderate
Sep24Moderate
Oct23Moderate
Nov22Moderate
Dec24Moderate
Location & terrain

Where is Santiago Sacatepéquez?

Santiago Sacatepéquez sits at 14.6°N, 90.7°W, 2,033 m above sea level, in Guatemala. The nearest listed city is San Lucas Sacatepéquez, 3.0 km away.

Topography around Santiago Sacatepéquez

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

Within 3 km, the terrain around Santiago Sacatepéquez has significant variations in elevation — a maximum elevation change of 533 m around an average of 2,074 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,507 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,937 m.

The land around Santiago Sacatepéquez is covered by trees (60%) and cropland (23%) within 3 km, trees (61%) within 16 km, and trees (64%) within 80 km.

3 km
533 m
16 km
1,507 m
80 km
3,937 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: San Lucas Sacatepéquez 3.0 km · Sumpango 6.0 km · Mixco 7.0 km · Jocotenango 9.0 km · San Juan Sacatepéquez 10 km · Antigua Guatemala 11 km · El Tejar 12 km · Ciudad Vieja 15 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 Santiago Sacatepéquez (14.6351°, -90.6765°, elevation 2,033 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. 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).