Santiago Atitlán weather in August

In August, Santiago Atitlán sees average daytime highs of 21°C and overnight lows near 14°C, with 260 mm of rain across 21.8 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 4% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 12 h 42 min at the start of August to 12 h 18 min by month's end. Set against the rest of the year, August is Santiago Atitlán's 10th-clearest and 7th-windiest month. For the whole year in context, see Santiago Atitlán's year-round climate.

Daytime high
21°
5th warmest
Overnight low
14°
10th coldest
Rainfall
260 mm
21.8 wet days
Daylight
12 h 30 min
5:54 AM – 6:24 PM
Cloud cover
82%
10th clearest
Wind
5 km/h
7th windiest
Solar energy
5.41 kWh/m²
Travel score
4.5
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 21°C through the month.

A typical August day in Santiago Atitlán reaches about 21°C in the afternoon and slips back to 14°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 23°C. Set against its neighbours, August runs on par with July and on par with September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12114
22114
32114
42114
52114
62114
72114
82114
92114
102114
112114
122114
132114
142114
152114
162114
172114
182114
192114
202114
212114
222114
232114
242114
252114
262114
272114
282114
292114
302114
312114

Santiago Atitlán weather by month

How August compares with the rest of the year at a glance. August is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 12°143.411.27.8
Feb22° / 12°204.711.57.7
Mar22° / 13°6511.911.96.6
Apr22° / 14°15918.512.35.3
May22° / 14°36825.912.74.0
Jun21° / 15°37526.212.83.8
Jul21° / 14°1991912.84.9
Aug21° / 14°26021.812.54.5
Sep21° / 14°37927.112.13.7
Oct21° / 14°2672311.74.3
Nov20° / 13°6110.411.36.3
Dec20° / 12°214.311.17.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 10% of August, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11783
21783
31783
41684
51684
61684
71684
81684
91585
101585
111585
121585
131585
141585
151585
161585
171585
181486
191486
201486
211486
221486
231486
241288
251288
261288
271288
281189
291189
301189
311189

Chance of precipitation in August

Any precipitation

Santiago Atitlán gets around 260 mm of rain over 21.8 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 70% and peaks near 85% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
159
259
360
460
561
662
762
863
964
1064
1165
1266
1367
1468
1569
1670
1770
1871
1972
2073
2174
2276
2377
2478
2579
2680
2781
2882
2983
3084
3185

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 74% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
127694
227694
327694
426695
526695
625705
725705
824715
924715
1023725
1123725
1222735
1321745
1421745
1520755
1620755
1719765
1819765
1919756
2018766
2118766
2217776
2317767
2416777
2516777
2615787
2715787
2814797
2913807
3013807
3112817

Wind in August

Winds average 5 km/h in August.

Across August, 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.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 42 min at the start of August to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over August. Sunrise moves from 5:51 AM to 5:56 AM, and sunset from 6:31 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:516:31
212.65:516:30
312.65:526:30
412.65:526:30
512.65:526:29
612.65:526:29
712.65:536:28
812.65:536:28
912.65:536:27
1012.65:536:27
1112.65:536:26
1212.55:546:26
1312.55:546:25
1412.55:546:25
1512.55:546:24
1612.55:546:24
1712.55:546:23
1812.55:556:23
1912.55:556:22
2012.45:556:21
2112.45:556:21
2212.45:556:20
2312.45:556:20
2412.45:556:19
2512.45:556:18
2612.45:556:18
2712.45:566:17
2812.35:566:16
2912.35:566:15
3012.35:566:15
3112.35:566:14

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.41 kWh/m².

For context, solar energy here swings from a low near 4.43 kWh/m² to a high of 6.25 kWh/m² in April across the year — August's 5.41 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in August

Hazard calendar for Santiago Atitlán

In seasonPeak

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

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

Santiago Atitlán'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 August a good time to visit Santiago Atitlán?

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

4.5
Sightseeing
8th-best month of the year
2.9
Beach & pool
8th-best month of the year

August is a reasonable time to visit Santiago Atitlán for sightseeing.

What to pack for Santiago Atitlán in August

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

In August, Santiago Atitlán sees daytime highs around 21°C and nights near 14°C. Pack rain gear. Worth having: sun protection. About 22 days see rain.

rain gearsun protection

UV index in Santiago Atitlán in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Atitlán peaks around April 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highApr 14UV 15Dec 14UV 10
UV index (midday)Level
Jan10Extreme
Feb14Extreme
Mar14Extreme
Apr15Extreme
May13Extreme
Jun13Extreme
Jul14Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec10Very high

Air quality in Santiago Atitlán in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Santiago Atitlán 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 Santiago Atitlán?

Santiago Atitlán sits at 14.6°N, 91.2°W, 1,603 m above sea level, in Guatemala. The nearest listed city is Panajachel, 14 km away.

Topography around Santiago Atitlán

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

Within 3 km, the terrain around Santiago Atitlán has large variations in elevation — a maximum elevation change of 698 m around an average of 1,708 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,122 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,937 m.

The land around Santiago Atitlán is covered by trees (63%) and water (22%) within 3 km, trees (76%) within 16 km, and trees (63%) within 80 km.

3 km
698 m
16 km
3,122 m
80 km
3,937 m
treesshrubsgrasslandcroplandartificial surfaceswater
August weather nearby: Panajachel 14 km · Chicacao 15 km · Sololá 16 km · Santa Bárbara 23 km · Patzún 24 km · San Pablo Jocopilas 25 km · Nahualá 25 km · Patulul 25 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 Atitlán (14.6382°, -91.229°, elevation 1,603 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). 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).