Río Grande in Fall
In fall (September, October and November), Río Grande sees average daytime highs around 30°C and overnight lows near 24°C, with 246 mm of rain over about 47 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 31°C in early September to 28°C by late November. The sky is clear or mostly clear about 39% of the time across fall, and the air most often feels oppressive.
Fall is Río Grande's weakest season of the year to visit on our travel score. Río Grande has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Río Grande's year-round climate.
- Avg daytime high
- 30°C
- 2nd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 246 mm
- 47 wet days
- Avg wind
- 12 km/h
- Travel score
- 4.6
- weakest season of the year
- Months
- Sep · Oct · Nov
Temperature in Río Grande in Fall
Over the season highs ease from about 31°C in early September to 28°C by late November.
A typical fall day in Río Grande reaches about 30°C and drops to 24°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Río Grande
Once humidity and wind are folded in, fall brings about 65 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Río Grande weather by month
How the three fall months (September, October and November) 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 | 27° / 21° | 61 | 11.1 | 10.9 | 6.8 |
| Feb | 27° / 21° | 44 | 8.8 | 11.3 | 7.0 |
| Mar | 28° / 21° | 62 | 10.5 | 11.9 | 6.7 |
| Apr | 28° / 22° | 62 | 12.2 | 12.4 | 5.9 |
| May | 29° / 23° | 84 | 15.9 | 12.9 | 4.7 |
| Jun | 30° / 24° | 42 | 10 | 13.2 | 4.7 |
| Jul | 31° / 25° | 35 | 9.7 | 13.1 | 4.9 |
| Aug | 31° / 25° | 46 | 10.7 | 12.7 | 4.6 |
| Sep | 31° / 25° | 76 | 15.6 | 12.1 | 4.0 |
| Oct | 30° / 24° | 83 | 16 | 11.5 | 4.4 |
| Nov | 28° / 23° | 87 | 15.5 | 11.1 | 5.3 |
| Dec | 27° / 22° | 63 | 11.9 | 10.8 | 6.5 |
Cloud cover in Fall
The sky is clear or mostly clear about 39% of the time across fall.
Chance of precipitation in Fall
Río Grande gets around 246 mm of rain over 47 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 12 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 24 min in early September to 10 h 54 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.3 kWh/m².
Hazard calendar for Río Grande
In fall, Río Grande overlaps its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Río Grande sits in the Atlantic hurricane belt; the season peaks August–October.
Is fall a good time to visit Río Grande?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Río Grande for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Río Grande in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Río Grande sees daytime highs around 30°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 47 days see rain.
Sea temperature near Río Grande in Fall
The nearest coast averages about 29°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 26 km away) is warmest in September at about 29°C and coldest in February near 26°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) | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 28 | 29 | 29 | 28 | 27 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 26 | Warm |
| Mar | 26 | Warm |
| Apr | 26 | Warm |
| May | 27 | Warm |
| Jun | 28 | Warm |
| Jul | 28 | Tropical |
| Aug | 28 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 27 | Warm |
UV index in Río Grande in Fall
Clear-sky midday UV across fall averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Río Grande peaks around March 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (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) | 8 | 10 | 12 | 12 | 11 | 12 | 12 | 11 | 11 | 10 | 7 | 7 |
| Level | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Very high |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Very high |
| Nov | 7 | Very high |
| Dec | 7 | High |
Air quality in Río Grande in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Río Grande is worst in June — around 30 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (February, 16 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) | 17 | 16 | 16 | 18 | 23 | 30 | 28 | 25 | 26 | 27 | 20 | 17 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 17 | Moderate |
| Feb | 16 | Moderate |
| Mar | 16 | Moderate |
| Apr | 18 | Moderate |
| May | 23 | Moderate |
| Jun | 30 | Moderate |
| Jul | 28 | Moderate |
| Aug | 25 | Moderate |
| Sep | 26 | Moderate |
| Oct | 27 | Moderate |
| Nov | 20 | Moderate |
| Dec | 17 | Moderate |
Where is Río Grande?
Río Grande sits at 19.7°N, 70.8°W, 397 m above sea level, in Dominican Republic. The nearest listed city is Villa Bisonó, 16 km away.
Topography around Río Grande
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Río Grande.
Within 3 km, the terrain around Río Grande has significant variations in elevation — a maximum elevation change of 453 m around an average of 344 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,235 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,073 m.
The land around Río Grande is covered by trees (88%) within 3 km, trees (78%) within 16 km, and trees (47%) and water (30%) 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 Río Grande (19.6667°, -70.7667°, elevation 397 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.