San Juan de la Maguana in Summer
In summer (June, July and August), San Juan de la Maguana sees average daytime highs around 28°C and overnight lows near 19°C, with 238 mm of rain over about 51 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Across summer, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 26% of the time across summer, and the air most often feels muggy.
Summer is San Juan de la Maguana's weakest season of the year to visit on our travel score. For the whole year in context, see San Juan de la Maguana's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 238 mm
- 51 wet days
- Avg wind
- 5 km/h
- Travel score
- 5.3
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in San Juan de la Maguana in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in San Juan de la Maguana reaches about 28°C and drops to 19°C overnight. The warmest of the three months is August, the coolest June.
San Juan de la Maguana 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 | 26° / 16° | 14 | 3.8 | 11 | 8.1 |
| Feb | 26° / 16° | 26 | 6.2 | 11.4 | 7.6 |
| Mar | 26° / 17° | 71 | 12.5 | 11.9 | 6.5 |
| Apr | 26° / 18° | 101 | 16.7 | 12.4 | 5.7 |
| May | 26° / 19° | 122 | 19.7 | 12.9 | 5.2 |
| Jun | 27° / 19° | 74 | 16.7 | 13.1 | 5.4 |
| Jul | 28° / 19° | 62 | 15.9 | 13 | 5.5 |
| Aug | 28° / 19° | 103 | 18.5 | 12.6 | 4.9 |
| Sep | 28° / 19° | 111 | 20.2 | 12.1 | 4.8 |
| Oct | 27° / 19° | 104 | 18.3 | 11.6 | 5.3 |
| Nov | 26° / 18° | 59 | 11.4 | 11.1 | 6.5 |
| Dec | 26° / 16° | 18 | 4.2 | 10.9 | 7.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 26% of the time across summer.
Chance of precipitation in Summer
San Juan de la Maguana gets around 238 mm of rain over 51 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — 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 13 hours in early June to 12 h 24 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 6.4 kWh/m².
Is summer a good time to visit San Juan de la Maguana?
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 San Juan de la Maguana for sightseeing.
What to pack for San Juan de la Maguana in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, San Juan de la Maguana sees daytime highs around 28°C and nights near 19°C. Pack light clothes, rain gear and sun protection. About 51 days see rain.
Sea temperature near San Juan de la Maguana in Summer
The nearest coast averages about 29°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 61 km away) is warmest in September at about 29°C and coldest in February near 27°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) | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 27 | Warm |
| May | 28 | Warm |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in San Juan de la Maguana 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 Juan de la Maguana peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (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 | 10 | 13 | 13 | 12 | 12 | 12 | 13 | 12 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 10 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in San Juan de la Maguana 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 Juan de la Maguana is worst in June — around 30 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (February, 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 | 16 | 16 | 21 | 30 | 29 | 25 | 22 | 23 | 18 | 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 | 16 | Moderate |
| Apr | 16 | Moderate |
| May | 21 | Moderate |
| Jun | 30 | Moderate |
| Jul | 29 | Moderate |
| Aug | 25 | Moderate |
| Sep | 22 | Moderate |
| Oct | 23 | Moderate |
| Nov | 18 | Moderate |
| Dec | 15 | Moderate |
Where is San Juan de la Maguana?
San Juan de la Maguana sits at 18.8°N, 71.2°W, 406 m above sea level, in Dominican Republic. The nearest listed city is Las Matas de Farfán, 31 km away.
Topography around San Juan de la Maguana
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Juan de la Maguana.
Within 3 km, the terrain around San Juan de la Maguana has only modest variations in elevation — a maximum elevation change of 55 m around an average of 410 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,406 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,109 m.
The land around San Juan de la Maguana is covered by cropland (49%) and artificial surfaces (24%) within 3 km, trees (51%), grassland (24%) and cropland (22%) within 16 km, and trees (54%) and grassland (29%) within 80 km.
Dominican Republic travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B / C
- 120 V · 60 Hz
- Prices
- ≈ 39% of US
- price level, 2025
- GDP per capita
- $11,059
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Safe drinking water
- 45%
- of population, 2024
- Homicide rate
- 10.9
- per 100k, 2023
- Road deaths
- 64.6
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 503
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 Juan de la Maguana (18.8064°, -71.2263°, elevation 406 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.