Santiago Atitlán in Summer
In summer (June, July and August), Santiago Atitlán sees average daytime highs around 21°C and overnight lows near 14°C, with 834 mm of rain over about 67 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 21°C. The sky is clear or mostly clear about 4% of the time across summer, and the air most often feels comfortable.
Summer is Santiago Atitlán's weakest season of the year to visit on our travel score. For the whole year in context, see Santiago Atitlán's year-round climate.
- Avg daytime high
- 21°C
- 2nd-warmest season
- Avg overnight low
- 14°C
- Rainfall
- 834 mm
- 67 wet days
- Avg wind
- 5 km/h
- Travel score
- 4.4
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Santiago Atitlán in Summer
Across summer, daytime highs hold fairly steady around 21°C.
A typical summer day in Santiago Atitlán reaches about 21°C and drops to 14°C overnight. The warmest of the three months is June, the coolest July.
Santiago Atitlán weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 21° / 12° | 14 | 3.4 | 11.2 | 7.8 |
| Feb | 22° / 12° | 20 | 4.7 | 11.5 | 7.7 |
| Mar | 22° / 13° | 65 | 11.9 | 11.9 | 6.6 |
| Apr | 22° / 14° | 159 | 18.5 | 12.3 | 5.3 |
| May | 22° / 14° | 368 | 25.9 | 12.7 | 4.0 |
| Jun | 21° / 15° | 375 | 26.2 | 12.8 | 3.8 |
| Jul | 21° / 14° | 199 | 19 | 12.8 | 4.9 |
| Aug | 21° / 14° | 260 | 21.8 | 12.5 | 4.5 |
| Sep | 21° / 14° | 379 | 27.1 | 12.1 | 3.7 |
| Oct | 21° / 14° | 267 | 23 | 11.7 | 4.3 |
| Nov | 20° / 13° | 61 | 10.4 | 11.3 | 6.3 |
| Dec | 20° / 12° | 21 | 4.3 | 11.1 | 7.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 4% of the time across summer.
Chance of precipitation in Summer
Santiago Atitlán gets around 834 mm of rain over 67 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 48 min in early June to 12 h 18 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.3 kWh/m².
Hazard calendar for Santiago Atitlán
In summer, Santiago Atitlán overlaps 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.
Is summer a good time to visit Santiago Atitlán?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Santiago Atitlán for sightseeing.
What to pack for Santiago Atitlán in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Santiago Atitlán sees daytime highs around 21°C and nights near 14°C. Pack rain gear. Worth having: sun protection. About 67 days see rain.
UV index in Santiago Atitlán in Summer
Clear-sky midday UV across summer averages 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 14 | 14 | 15 | 13 | 13 | 14 | 13 | 13 | 12 | 10 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Extreme |
| Feb | 14 | Extreme |
| Mar | 14 | Extreme |
| Apr | 15 | Extreme |
| May | 13 | Extreme |
| Jun | 13 | Extreme |
| Jul | 14 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 12 | Extreme |
| Nov | 10 | Very high |
| Dec | 10 | Very high |
Air quality in Santiago Atitlán in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 23 | 22 | 25 | 34 | 34 | 23 | 23 | 22 | 23 | 23 | 23 | 25 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 23 | Moderate |
| Feb | 22 | Moderate |
| Mar | 25 | Moderate |
| Apr | 34 | Moderate |
| May | 34 | Moderate |
| Jun | 23 | Moderate |
| Jul | 23 | Moderate |
| Aug | 22 | Moderate |
| Sep | 23 | Moderate |
| Oct | 23 | Moderate |
| Nov | 23 | Moderate |
| Dec | 25 | Moderate |
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.
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
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.