San Luis in Summer
In summer (June, July and August), San Luis sees average daytime highs around 29°C and overnight lows near 21°C, with 628 mm of rain over about 81 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 4% of the time across summer, and the air most often feels oppressive.
Summer is San Luis's weakest season of the year to visit on our travel score. For the whole year in context, see San Luis's year-round climate.
- Avg daytime high
- 29°C
- 2nd-warmest season
- Avg overnight low
- 21°C
- Rainfall
- 628 mm
- 81 wet days
- Avg wind
- 4 km/h
- Travel score
- 3.2
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in San Luis in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in San Luis reaches about 29°C and drops to 21°C overnight. The warmest of the three months is June, the coolest August.
How summer really feels in San Luis
Once humidity and wind are folded in, summer brings about 54 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
San Luis 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 | 25° / 17° | 109 | 16.5 | 11.2 | 5.9 |
| Feb | 26° / 18° | 67 | 12.9 | 11.5 | 6.2 |
| Mar | 28° / 18° | 65 | 11.5 | 11.9 | 6.0 |
| Apr | 30° / 20° | 70 | 12.9 | 12.3 | 4.6 |
| May | 31° / 21° | 165 | 21.8 | 12.7 | 3.4 |
| Jun | 30° / 21° | 231 | 26.3 | 12.9 | 3.0 |
| Jul | 29° / 21° | 194 | 27.7 | 12.8 | 3.3 |
| Aug | 29° / 21° | 203 | 27.4 | 12.5 | 3.2 |
| Sep | 29° / 21° | 256 | 28.4 | 12.1 | 2.9 |
| Oct | 28° / 20° | 236 | 26.2 | 11.7 | 3.8 |
| Nov | 26° / 19° | 200 | 20.9 | 11.3 | 4.8 |
| Dec | 25° / 18° | 114 | 18.8 | 11.1 | 5.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 4% of the time across summer.
Chance of precipitation in Summer
San Luis gets around 628 mm of rain over 81 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 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 5.5 kWh/m².
Is summer a good time to visit San Luis?
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 weaker month for outdoor sightseeing in San Luis.
What to pack for San Luis in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, San Luis sees daytime highs around 29°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 81 days see rain.
UV index in San Luis in Summer
Clear-sky midday UV across summer averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Luis peaks around April 9 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 9 (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 | 12 | 13 | 14 | 11 | 13 | 12 | 12 | 12 | 11 | 9 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 14 | Extreme |
| May | 11 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in San Luis 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 San Luis is worst in April — around 41 µg/m³ PM2.5 (poor), about 4.7× the cleanest month (December, 9 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 9 | 11 | 16 | 41 | 40 | 21 | 23 | 18 | 17 | 14 | 10 | 9 |
| Level | Good | Good | Moderate | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 11 | Good |
| Mar | 16 | Moderate |
| Apr | 41 | Poor |
| May | 40 | Poor |
| Jun | 21 | Moderate |
| Jul | 23 | Moderate |
| Aug | 18 | Moderate |
| Sep | 17 | Moderate |
| Oct | 14 | Moderate |
| Nov | 10 | Good |
| Dec | 9 | Good |
Where is San Luis?
San Luis sits at 15.1°N, 88.4°W, 734 m above sea level, in Honduras. The nearest listed city is San José de Colinas, 18 km away.
Topography around San Luis
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Luis.
Within 3 km, the terrain around San Luis has significant variations in elevation — a maximum elevation change of 466 m around an average of 752 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,539 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,817 m.
The land around San Luis is covered by trees (72%) and grassland (25%) within 3 km, trees (73%) and grassland (23%) within 16 km, and trees (72%) and grassland (21%) within 80 km.
Honduras travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $3,598
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Safe drinking water
- 66%
- of population, 2024
- Homicide rate
- 31.4
- per 100k, 2023
- Road deaths
- 16.1
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- High
- EF EPI 553
- 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 San Luis (15.1269°, -88.4393°, elevation 734 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.