Sonsonate in Summer
In summer (June, July and August), Sonsonate sees average daytime highs around 29°C and overnight lows near 22°C, with 876 mm of rain over about 82 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 6% of the time across summer, and the air most often feels oppressive.
Summer is Sonsonate's weakest season of the year to visit on our travel score. For the whole year in context, see Sonsonate's year-round climate.
- Avg daytime high
- 29°C
- 3rd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 876 mm
- 82 wet days
- Avg wind
- 5 km/h
- Travel score
- 3.2
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Sonsonate in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Sonsonate reaches about 29°C and drops to 22°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Sonsonate
Once humidity and wind are folded in, summer brings about 24 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.
Sonsonate 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 | 29° / 20° | 5 | 1.5 | 11.3 | 7.0 |
| Feb | 30° / 20° | 5 | 1.7 | 11.5 | 6.6 |
| Mar | 30° / 21° | 18 | 5.4 | 11.9 | 5.7 |
| Apr | 30° / 22° | 65 | 14.3 | 12.3 | 4.6 |
| May | 29° / 22° | 267 | 26.5 | 12.6 | 3.4 |
| Jun | 29° / 22° | 328 | 28.1 | 12.8 | 3.1 |
| Jul | 29° / 22° | 250 | 26.2 | 12.7 | 3.4 |
| Aug | 29° / 22° | 298 | 27.8 | 12.5 | 3.2 |
| Sep | 28° / 22° | 398 | 29.3 | 12.1 | 3.2 |
| Oct | 28° / 21° | 336 | 26.3 | 11.7 | 3.8 |
| Nov | 29° / 21° | 73 | 11.7 | 11.4 | 5.6 |
| Dec | 29° / 20° | 12 | 2.9 | 11.2 | 6.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 6% of the time across summer.
Chance of precipitation in Summer
Sonsonate gets around 876 mm of rain over 82 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 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 42 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 5.7 kWh/m².
Hazard calendar for Sonsonate
In summer, Sonsonate overlaps its atlantic hurricane and monsoon season. The full year is below, with each hazard's peak months called out.
Sonsonate sits in the Atlantic hurricane belt; the season peaks August–October.
Sonsonate's monsoon runs May–October, when most of the year's rain falls.
Is summer a good time to visit Sonsonate?
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 Sonsonate.
What to pack for Sonsonate in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Sonsonate sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 82 days see rain.
Sea temperature near Sonsonate in Summer
The nearest coast averages about 30°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 19 km away) is warmest in August at about 30°C and coldest in January near 28°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 28 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Tropical |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 29 | Tropical |
UV index in Sonsonate 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 Sonsonate peaks around April 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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) | 9 | 13 | 13 | 13 | 12 | 13 | 12 | 12 | 11 | 11 | 9 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 13 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 11 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Sonsonate 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 Sonsonate is worst in May — around 31 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (January, 14 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) | 14 | 14 | 17 | 28 | 31 | 21 | 23 | 21 | 20 | 19 | 19 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 14 | Moderate |
| Mar | 17 | Moderate |
| Apr | 28 | Moderate |
| May | 31 | Moderate |
| Jun | 21 | Moderate |
| Jul | 23 | Moderate |
| Aug | 21 | Moderate |
| Sep | 20 | Moderate |
| Oct | 19 | Moderate |
| Nov | 19 | Moderate |
| Dec | 15 | Moderate |
Where is Sonsonate?
Sonsonate sits at 13.7°N, 89.7°W, 245 m above sea level, in El Salvador. The nearest listed city is Sonzacate, 2.0 km away.
Topography around Sonsonate
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sonsonate.
Within 3 km, the terrain around Sonsonate has only modest variations in elevation — a maximum elevation change of 245 m around an average of 248 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,020 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,353 m.
The land around Sonsonate is covered by trees (48%) and artificial surfaces (27%) within 3 km, trees (66%) and grassland (25%) within 16 km, and trees (40%), water (31%) and grassland (20%) within 80 km.
El Salvador travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 115 V · 60 Hz
- Prices
- ≈ 41% of US
- price level, 2025
- GDP per capita
- $5,767
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Homicide rate
- 7.9
- per 100k, 2022
- Road deaths
- 20.9
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 523
- 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 Sonsonate (13.7173°, -89.723°, elevation 245 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.